Mobile QR Code QR CODE : Journal of the Korean Society of Civil Engineers

  1. ๊ฒฝ๊ธฐ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› ํ† ๋ชฉ๊ณตํ•™๊ณผ ๋ฐ•์‚ฌ๊ณผ์ • (Kyonggi University)
  2. ๊ฒฝ๊ธฐ๋Œ€ํ•™๊ต ๋Œ€ํ•™์› ํ† ๋ชฉ๊ณตํ•™๊ณผ ๋ฐ•์‚ฌ๊ณผ์ • (Kyonggi University)
  3. ๊ฒฝ๊ธฐ๋Œ€ํ•™๊ต ํ† ๋ชฉ๊ณตํ•™๊ณผ ๊ต์ˆ˜ (Kyonggi University)


์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜, ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ, ์œก์•ˆ์กฐ์‚ฌ, ๊ท ์—ด์œจ
Narrow regional road pavement condition index, Pavement management system, Visual inspection, Crack

  • 1. ์„œ ๋ก 

  • 2. ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜

  •   2.1 ์ผ๋ฐ˜๊ตญ๋„ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜(NHPCI; National Highway Pavement Condition Index)

  •   2.2 ์„œ์šธ์‹œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜, SPI

  •   2.3 ์‹œ๋‹จ์œ„ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜(MPCI; Municipal Pavement Condition Index)

  • 3. ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ๊ด€๋ฆฌ ์‹œ์Šคํ…œ

  •   3.1 ๊ธฐ์กด ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜ ์ ์šฉ

  •   3.2 ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜

  •   3.3 ํ˜„์žฅ ์ ์šฉ ๊ฒฐ๊ณผ

  • 4. ๊ฒฐ ๋ก 

1. ์„œ ๋ก 

๊ตญ๋‚ด ๋„๋กœ๋Š” 2016๋…„ ๊ธฐ์ค€ ์ „์ฒด ๋„๋กœ์—ฐ์žฅ 108,780km์— ํฌ์žฅ๋ฅ ์€ 92.4% ์ˆ˜์ค€์œผ๋กœ ๋„๋กœ๋ง์˜ ๊ตฌ์ถ•์ด ์™„๋ฃŒ ๋‹จ๊ณ„์— ์ด๋ฅด๋ €์œผ๋ฏ€๋กœ ์ƒˆ๋กœ์šด ๋„๋กœ์˜ ๊ฑด์„ค๋ณด๋‹ค ๊ธฐ์กด ๋„๋กœ์˜ ๊ด€๋ฆฌ์— ์ดˆ์ ์ด ๋งž์ถฐ์ง€๊ณ  ์žˆ๋Š” ์‹ค์ •์ด๋‹ค(MLIT, 2017). ๋„๋กœํฌ์žฅ์€ ์ฐจ๋Ÿ‰ ํ†ตํ–‰์— ๋”ฐ๋ฅธ ๊ตํ†ต ํ•˜์ค‘๊ณผ ๊ฐ•์šฐ, ๊ฐ•์„ค ๋“ฑ ํ™˜๊ฒฝ ํ•˜์ค‘์œผ๋กœ ์ธํ•ด ๊ณต์šฉ์—ฐ์ˆ˜์˜ ๊ฒฝ๊ณผ์— ๋”ฐ๋ผ ์ง€์†์ ์ธ ์„ฑ๋Šฅ์ €ํ•˜๊ฐ€ ์ด๋ฃจ์–ด์ ธ ์ฒด๊ณ„์ ์ธ ์œ ์ง€๊ด€๋ฆฌ๊ฐ€ ํ•„์š”ํ•˜๋‹ค(Kim et al., 2017). ์ด์— ๋”ฐ๋ผ ๋„๋กœ์˜ ํšจ์œจ์  ๊ด€๋ฆฌ๋ฅผ ์œ„ํ•ด 1980๋…„๋Œ€ ํ›„๋ฐ˜๋ถ€ํ„ฐ ๋„๋กœํฌ์žฅ์„ ์ฒด๊ณ„์ ์œผ๋กœ ๊ด€๋ฆฌํ•˜๊ธฐ ์œ„ํ•ด ๋„๋กœํฌ์žฅ๊ณผ ๊ด€๋ จ๋œ ๊ณ„ํš, ์„ค๊ณ„, ์œ ์ง€๋ณด์ˆ˜ ๋ฐ ํ‰๊ฐ€์˜ ์ „๋‹จ๊ณ„๋ฅผ ์ข…ํ•ฉ์ , ์ฒด๊ณ„์ ์œผ๋กœ ๊ด€๋ฆฌํ•˜๋Š” ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ(์ดํ•˜, PMS; Pavement Management System)์„ ๋„์ž…ํ•˜์—ฌ ์šด์˜ํ•˜๊ณ  ์žˆ๋‹ค. PMS๋Š” ์ •๊ธฐ์ ์ธ ํฌ์žฅ์ƒํƒœ๋ฅผ ์กฐ์‚ฌ ๋ฐ ํ‰๊ฐ€๋ฅผ ํ†ตํ•ด ๋ณด์ˆ˜๋Œ€์ƒ ๊ตฌ๊ฐ„์„ ์„ ์ •ํ•˜๊ณ  ์ตœ์ ์˜ ๋ณด์ˆ˜๊ณต๋ฒ•๊ณผ ์šฐ์„ ์ˆœ์œ„๋ฅผ ๊ฒฐ์ •ํ•˜๊ณ  ํ•„์š” ์˜ˆ์‚ฐ์„ ์‚ฐ์ •ํ•˜๋Š” ์‹œ์Šคํ…œ์œผ๋กœ FHWA (Federal Highway Administration)์˜ Real Cost์™€ ๋„๋กœ ์‚ฌ์—…์„ ์œ„ํ•œ ํˆฌ์ž๋ถ„์„์„ ์œ„ํ•œ Asset Management, BCA์™€ World Bank์—์„œ ๊ฐœ๋ฐœํ•œ HDM-4 (Highway Development and Management) ๋“ฑ์ด ์žˆ๋‹ค(GRI, 2014; Do et al., 2014).

๊ตญ๋‚ด์˜ ๊ฒฝ์šฐ ๋„๋กœ๊ด€๋ฆฌ ๊ธฐ๊ด€๋ณ„ ๋„๋กœ ์œ ์ง€๊ด€๋ฆฌ ์‹œ์Šคํ…œ์„ ์ ์šฉํ•˜๋ฉฐ ํ•œ๊ตญ๋„๋กœ๊ณต์‚ฌ๋Š” ๊ณ ์†๊ตญ๋„, ๊ตญํ† ๊ตํ†ต๋ถ€์—์„œ๋Š” ์ผ๋ฐ˜๊ตญ๋„์˜ ์œ ์ง€ยท๋ณด์ˆ˜ยท์กฐ์‚ฌยท๋ถ„์„ ์—…๋ฌด๋ฅผ ์ˆ˜ํ–‰ํ•˜๊ณ  ์žˆ๋‹ค. ๋ฐ˜๋ฉด ๋„๋กœ๋ฒ•์ƒ ์ง€์ž์ฒด ๊ด€ํ• ๋„๋กœ์˜ ์—ฐ์žฅ์€ 2016๋…„ ๊ธฐ์ค€์œผ๋กœ 90,365km๋กœ ์ „์ฒด ๋„๋กœ์˜ 83.1%๋ฅผ ์ž์น˜ํ•˜๊ณ  ์žˆ์Œ์—๋„ ๋ถˆ๊ตฌํ•˜๊ณ  ์˜ˆ์‚ฐ์ƒ์˜ ๋ฌธ์ œ๋กœ ์ธํ•ด ์ง€์ž์ฒด์˜ ๋„๋กœํฌ์žฅ ์œ ์ง€๊ด€๋ฆฌ ์‹œ์Šคํ…œ์€ ํ™œ์„ฑํ™”๋˜์ง€ ๋ชปํ•˜๊ณ  ์žˆ๋‹ค(MLIT, 2017). 2016๋…„ ๋„๋กœ๊ด€๋ฆฌ ์ฃผ์ฒด๋ณ„ ์œ ์ง€๋ณด์ˆ˜๋น„์šฉ ์ง‘ํ–‰ํ˜„ํ™ฉ์„ ์‚ดํŽด๋ณด๋ฉด, Table 1๊ณผ ๊ฐ™์ด ๊ณ ์†๊ตญ๋„๋Š” km๋‹น 91๋ฐฑ๋งŒ์›, ์ผ๋ฐ˜๊ตญ๋„๋Š” 89๋ฐฑ๋งŒ์›, ํŠน๋ณ„โ€ค๊ด‘์—ญ์‹œ๋„๋Š” 23๋ฐฑ๋งŒ์›, ์ง€๋ฐฉ๋„๋Š” 17๋ฐฑ๋งŒ์›, ์‹œโ€ค๊ตฐโ€ค๊ตฌ๋„๋Š” 12๋ฐฑ๋งŒ์›์œผ๋กœ ์ง€์ž์ฒด์˜ ๋„๋กœ ์œ ์ง€๋ณด์ˆ˜ ์˜ˆ์‚ฐ์€ ๊ณ ์†๊ตญ๋„ ๋ฐ ๊ตญ๋„์— ๋น„ํ•ด ํ˜„์ €ํžˆ ๋‚ฎ๊ฒŒ ์ง‘ํ–‰๋˜์—ˆ๋‹ค(MLIT, 2017). ๋˜ํ•œ ๊ตญํ† ๊ตํ†ต๋ถ€ ๊ตํ†ต๋Ÿ‰ ํ†ต๊ณ„์ž๋ฃŒ์— ๋”ฐ๋ฅด๋ฉด ์ง€๋ฐฉ๋„ ๋„๋กœ ๊ตํ†ต๋Ÿ‰์€ Fig. 1๊ณผ ๊ฐ™์ด ๊ณ ์†๊ตญ๋„์˜ ์•ฝ 13% ์ˆ˜์ค€์ž„์—๋„ ๋ถˆ๊ตฌํ•˜๊ณ  Fig. 2์™€ ๊ฐ™์ด ๊ตํ†ต์‚ฌ๊ณ  ๋ฐœ์ƒ๊ฑด์ˆ˜๊ฐ€ 5๋ฐฐ ์ด์ƒ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค(MLIT, 2017).

Fig. 1.

Annual Traffic Volume by Road Type

Figure_KSCE_38_3_10_F1.jpg
Fig. 2.

Annual Traffic Accident by Road Type

Figure_KSCE_38_3_10_F2.jpg
Table 1. Excutions Status of Road Maintenance Cost by Road Management Agency (MLIT, 2017) Table_KSCE_38_3_10_T1.jpg

๋„๋กœ๊ด€๋ฆฌ์˜ˆ์‚ฐ์˜ ๊ฐ์†Œ๋Š” ํฌ์žฅ ํŒŒ์†์‹œ ์ ์ ˆํ•œ ๋ณด์ˆ˜์‹œ๊ธฐ๋ฅผ ๋†“์น˜๊ฑฐ๋‚˜ ์ ์ ˆํ•œ ๋ณด์ˆ˜๊ณต๋ฒ•์„ ์ ์šฉํ•˜์ง€ ๋ชปํ•˜๊ฒŒ ๋˜๋ฏ€๋กœ ๋„๋กœํฌ์žฅ์˜ ์„œ๋น„์Šค ๋Šฅ๋ ฅ ์ €ํ•˜๋กœ ์ด์–ด์ง„๋‹ค. ๋ฐ˜๋ฉด ์ฐจ๋Ÿ‰์˜ ์„ฑ๋Šฅ ํ–ฅ์ƒ๊ณผ ์‚ฌ์šฉ์ž์˜ ์ธ์‹๊ฐœ์„ ์— ๋”ฐ๋ผ ๋„๋กœํฌ์žฅ์˜ ์„œ๋น„์Šค ์ˆ˜์ค€์— ๋Œ€ํ•œ ์š”๊ตฌ์ˆ˜์ค€์€ ๋†’์•„์ง€๊ณ  ์žˆ๋Š” ์‹ค์ •์ด๋‹ค. ํ•œ์ •๋œ ์˜ˆ์‚ฐ์„ ํšจ์œจ์ ์œผ๋กœ ์ง‘ํ–‰ํ•˜๊ธฐ ์œ„ํ•ด ์ง€์ž์ฒด๋ฅผ ๋น„๋กฏํ•œ ๋„๋กœ๊ด€๋ฆฌ๊ธฐ๊ด€์—์„œ๋Š” ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ์— ๊ด€ํ•œ ๊ด€์‹ฌ์ด ๋†’์•„์ง€๊ฒŒ ๋˜์—ˆ์œผ๋ฉฐ, ์ผ๋ถ€ ์ง€์ž์ฒด์˜ ๊ฒฝ์šฐ ์ž์ฒด ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ ๋„์ž… ๋ฐ ๊ตฌ์ถ•์„ ์ˆ˜ํ–‰ํ•˜์˜€๊ฑฐ๋‚˜ ๊ฒ€ํ† ํ•˜๊ณ  ์žˆ๋‹ค.

์ง€์ž์ฒด์—์„œ๋Š” ์ง€์—ญ์ฃผ๋ฏผ์˜ ์•ˆ์ „, ์ƒํ™œ ์—ฌ๊ฑด ํ™•๋ณด๋ฅผ ์œ„ํ•ด ๋„๋กœํฌ์žฅ์„ ๊ด€๋ฆฌํ•˜๊ณ ์ž ๋…ธ๋ ฅํ•˜๊ณ  ์žˆ์œผ๋‚˜ ๊ด€๋ จ ์˜ˆ์‚ฐ ๋ฐ ๊ธฐ์ˆ  ๋ถ€์กฑ์œผ๋กœ ์ธํ•ด ๋ฌธ์ œํ•ด๊ฒฐ์— ์–ด๋ ค์›€์„ ํ˜ธ์†Œํ•˜๊ณ  ์žˆ๋Š” ์‹ค์ •์ด๋‹ค. ๋‹น๋ฉดํ•œ ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•˜๊ธฐ ์œ„ํ•ด ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ํ•ฉ๋ฆฌ์  ๊ทผ๊ฑฐ์ž๋ฃŒ์— ๊ทผ๊ฑฐํ•œ ์ง€์—ญ๋„๋กœ ๋„๋กœํฌ์žฅ๊ด€๋ฆฌ ๋ฐฉ์•ˆ์„ ์ œ์‹œํ•˜๊ณ ์ž ํ•œ๋‹ค.

2. ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜

ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ(PMS)์€ ๋„๋กœํฌ์žฅ๊ณผ ๊ด€๋ จ๋œ ๊ณ„ํš, ์„ค๊ณ„, ์œ ์ง€๋ณด์ˆ˜ ๋ฐ ํ‰๊ฐ€ ์ „ ๋‹จ๊ณ„๋ฅผ ์ข…ํ•ฉ์ , ์ฒด๊ณ„์ ์œผ๋กœ ๊ด€๋ฆฌํ•˜๋Š” ์‹œ์Šคํ…œ์ด๋‹ค. PMS๋Š” ๋ณต์žกํ•˜๊ณ  ๋ฐฉ๋Œ€ํ•œ ๊ด€ํ• ๋„๋กœ๋ง์˜ ์ •๊ธฐ์  ํฌ์žฅ์ƒํƒœ ์กฐ์‚ฌ, ํ‰๊ฐ€๋ฅผ ํ†ตํ•ด ๋ณด์ˆ˜ ์šฐ์„ ์ˆœ์œ„, ์ตœ์  ๋ณด์ˆ˜ ์‹œ๊ธฐ ๋ฐ ๊ณต๋ฒ• ๋“ฑ์„ ๊ฒฐ์ •ํ•˜๊ณ  ๊ถ๊ทน์ ์œผ๋กœ ์ œํ•œ๋œ ์˜ˆ์‚ฐ์„ ํ•ฉ๋ฆฌ์ ์ด๋ฉฐ ํšจ์œจ์ ์œผ๋กœ ์šด์˜ํ•˜๋Š” ๋ฐ ๊ทธ ๋ชฉ์ ์ด ์žˆ๋‹ค(IDI, 2012). ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ์˜ ์˜์‚ฌ๊ฒฐ์ •์„ ์œ„ํ•ด์„œ๋Š” ํฌ์žฅ์ƒํƒœ์— ๋Œ€ํ•œ ๊ฐ๊ด€์ ์ธ ์ง€ํ‘œ์™€ ๋ฐ์ดํ„ฐ์˜ ํ™•๋ณด๊ฐ€ ์ค‘์š”ํ•˜๋‹ค. ๋”ฐ๋ผ์„œ ๊ฐ๊ฐ์˜ ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ์—์„œ๋Š” ํฌ์žฅ์ƒํƒœ๋ฅผ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•œ ์กฐ์‚ฌ๋ฐฉ๋ฒ•๊ณผ ํ‰๊ฐ€๋ฐฉ๋ฒ• ๋ฐ ํฌ์žฅ์ƒํƒœ ํ‰๊ฐ€์ง€์ˆ˜๋ฅผ ์ œ์‹œํ•˜๊ณ  ์žˆ๋‹ค.

ํฌ์žฅ์ƒํƒœ์˜ ํ‰๊ฐ€๋Š” ํฌ์žฅ๋ฉด์— ๋ฐœ์ƒํ•œ ๊ท ์—ด, ํŒจ์นญ, ์†Œ์„ฑ๋ณ€ํ˜•, ์ข…๋‹จํ‰ํƒ„์„ฑ ๋“ฑ์„ ๊ฐœ๋ณ„์ ์œผ๋กœ ์กฐ์‚ฌํ•˜์—ฌ ์ข…ํ•ฉ์ ์œผ๋กœ ์ˆ˜์น˜ํ™”ํ•˜์—ฌ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๋กœ ์ •๋Ÿ‰ํ™”ํ•œ๋‹ค. ๊ตญ๋‚ด์— ์ ์šฉ๋˜๊ณ  ์žˆ๋Š” ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๋Š” ๊ณ ์†๊ตญ๋„์— ์ ์šฉํ•˜๋Š” HPCI (Highway Pavement Condition Index), ์ผ๋ฐ˜๊ตญ๋„์— ์ ์šฉํ•˜๋Š” NHPCI (National Highway Pavement Condition Index), ์„œ์šธ์‹œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์ธ SPI (Seoul Pavement Index), ์‹œ๋‹จ์œ„ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์ธ MPCI (Municipal Pavement Condition Index)๊ฐ€ ์žˆ๋‹ค. ๊ฐ ํ‰๊ฐ€์ง€์ˆ˜๋Š” ๊ด€๋ฆฌ๋„๋กœ์˜ ์„ค๊ณ„์†๋„, ์•ˆ์ „์„ฑ ๋“ฑ์„ ๊ณ ๋ คํ•˜์—ฌ ์œ ์ง€๋ณด์ˆ˜ ๊ธฐ์ค€์„ ์ˆ˜๋ฆฝํ•˜์—ฌ ์šด์˜ํ•˜๊ณ  ์žˆ์œผ๋ฉฐ Table 2๋Š” ๊ฐœ๋ณ„๊ฒฐํ•จ๋ณ„ ์œ ์ง€๋ณด์ˆ˜ ๊ฒฝ๊ณ„๊ธฐ์ค€์ด๋‹ค.

Table 2์™€ ๊ฐ™์ด ๊ฐœ๋ณ„ ํ‰๊ฐ€์ง€์ˆ˜์˜ ์œ ์ง€๋ณด์ˆ˜ ๊ฒฝ๊ณ„๊ธฐ์ค€์€ ์„ค๊ณ„์†๋„์— ๋”ฐ๋ผ ์ฐจ์ด๊ฐ€ ์žˆ๋Š” ๊ฒƒ์„ ์•Œ ์ˆ˜ ์žˆ๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด ์ฐจ๋Ÿ‰์˜ ์†๋„๊ฐ€ ๋†’์€ ๊ณ ์†๊ตญ๋„์˜ ๊ฒฝ์šฐ ํ‰ํƒ„์„ฑ ๊ธฐ์ค€์ด ๋‚ฎ๊ฒŒ ์„ค์ •๋˜์–ด ์žˆ์œผ๋ฉฐ, ์ €์†์—์„œ๋Š” ํ‰ํƒ„์„ฑ์˜ ์˜ํ–ฅ์ด ์ ๊ธฐ ๋•Œ๋ฌธ์— ๋‹ค์†Œ ์™„ํ™”๋œ ์ˆ˜์ค€์˜ ํ‰ํƒ„์„ฑ ๊ธฐ์ค€์„ ๊ฒฝ๊ณ„๊ธฐ์ค€์œผ๋กœ ์‚ผ๊ณ  ์žˆ๋‹ค. ์„œ์šธ์‹œ ํฌ์žฅ์กฐ์‚ฌ์— ๋”ฐ๋ฅด๋ฉด Table 3๊ณผ ๊ฐ™์ด ์ž๋™์ฐจ ์ „์šฉ๋„๋กœ์™€ ๊ฐ™์€ ์„ค๊ณ„์†๋„๊ฐ€ ๋†’์€ ๋„๋กœ๋Š” ํ‰ํƒ„์„ฑ ํ™•๋ณด์— ์ฃผ์•ˆ์ ์„ ๋‘๊ณ  ๊ด€๋ฆฌ๋˜๊ณ  ์žˆ์ง€๋งŒ ์ €์†๋„๋กœ์˜ ๊ฒฝ์šฐ๋Š” ์ƒ๋Œ€์ ์œผ๋กœ ํ‰ํƒ„์„ฑ์— ์˜ํ•œ ์„œ๋น„์Šค ์ˆ˜์ค€ ์˜ํ–ฅ์ด ์ ๊ธฐ ๋•Œ๋ฌธ์— ๋‹ค์†Œ ๋†’์€ ์ˆ˜์ค€์œผ๋กœ ๊ด€๋ฆฌ๋˜๊ณ  ์žˆ์Œ์„ ์•Œ ์ˆ˜ ์žˆ๋‹ค.

Table 2. Boundary of Maintenance for the Individual Evaluation Index (SMG, 2013) Table_KSCE_38_3_10_T2.jpg
Table 3. Results of Road Function Analysis in Seoul-si at the 2012 Year (SMC, 2013) Table_KSCE_38_3_10_T3.jpg

2.1 ์ผ๋ฐ˜๊ตญ๋„ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜(NHPCI; National Highway Pavement Condition Index)

NHPCI๋Š” ํ•œ๊ตญ๊ฑด์„ค๊ธฐ์ˆ ์—ฐ๊ตฌ์›์—์„œ 2007๋…„ ๋„๋กœํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ ์—ฐ๊ตฌ๋ฅผ ํ†ตํ•ด ๊ฐœ๋ฐœํ•œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๋กœ ํฌ์žฅ ์ „๋ฌธ๊ฐ€๋กœ ๊ตฌ์„ฑ๋œ ํŒจ๋„์˜ ์˜๊ฒฌ๊ณผ ๊ท ์—ด์œจ, ์†Œ์„ฑ๋ณ€ํ˜•, ์ข…๋‹จํ‰ํƒ„์„ฑ ๋“ฑ ์ƒ์„ธ์กฐ์‚ฌ ์ž๋ฃŒ ๊ฐ„์˜ ํ†ต๊ณ„๋ถ„์„์„ ํ†ตํ•ด Eq. (1)๊ณผ ๊ฐ™์€ ๋ชจ๋ธ์‹์œผ๋กœ ๊ฐœ๋ฐœ๋˜์—ˆ๋‹ค(MLTMA, 2011).

PIC50B9.gif

(1)

Where, PIC50CA.gif : National Highway Pavement Condition Index

     PIC50CB.gif   : Crack (%)

     PIC50FB.gif   : Rutting (mm)

     PIC510B.gif   : IRI (m/km)

NHPCI๋Š” ํฌ์žฅ์ƒํƒœ๋ณ„๋กœ โ€œ๋งค์šฐ ์–‘ํ˜ธโ€์—์„œ โ€œ๋ถˆ๋Ÿ‰โ€๊นŒ์ง€ ์ด 4๋‹จ๊ณ„๋กœ ๊ตฌ๋ถ„ํ•˜์—ฌ ์œ ์ง€๋ณด์ˆ˜ ๊ณต๋ฒ• ๊ธฐ์ค€์„ ์ ์šฉํ•˜๊ณ  ์žˆ๋‹ค. ์ผ๋ฐ˜๊ตญ๋„์— ์ ์šฉ๋œ ๋ณด์ˆ˜๊ณต๋ฒ•์˜ ์ ์šฉ ์‹œ๊ธฐ์— ๋”ฐ๋ฅธ NHPCI ๋ถ„ํฌ๋ฅผ ์‚ดํŽด๋ณธ ๊ฒฐ๊ณผ ์˜ˆ๋ฐฉ์  ์œ ์ง€๋ณด์ˆ˜๋Š” 5.64~5.68, ๋ง์”Œ์šฐ๊ธฐ๋Š” 4.75~4.77, ์žฌํฌ์žฅ์€ 3.76~3.82์˜ ๋ฒ”์œ„์—์„œ ์ ์šฉ๋œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค(Son et al., 2013).

2.2 ์„œ์šธ์‹œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜, SPI

์„œ์šธ์‹œ๋Š” ์ง€์ž์ฒด ์ค‘ ๊ฐ€์žฅ ๋จผ์ € PMS๋ฅผ ๋„์ž…ํ•˜์˜€์œผ๋ฉฐ, ๊ด€ํ•  ๋„๋กœ๋ฅผ ์ฒด๊ณ„์ ์œผ๋กœ ๊ด€๋ฆฌํ•  ์ˆ˜ ์žˆ๋Š” ์ž์ฒด ํ‰๊ฐ€์ง€์ˆ˜์ธ SPI๋ฅผ ๊ฐœ๋ฐœํ•˜์—ฌ ์ ์šฉํ•˜๊ณ  ์žˆ๋‹ค. ๊ท ์—ด, ์†Œ์„ฑ๋ณ€ํ˜•, ์ข…๋‹จํ‰ํƒ„์„ฑ ๋“ฑ ํŒŒ์†์œ ํ˜•๋ณ„๋กœ ๊ฐœ๋ณ„์ ์œผ๋กœ ๊ณ„์‚ฐ๋œ SPI1, SPI2, SPI3์„ Eq. (2)๋ฅผ ํ†ตํ•ด ์ข…ํ•ฉ์ ์ธ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์ธ SPI๋กœ ์‚ฐ์ถœ๋œ๋‹ค.

PIC511C.gif (2)

Where, PIC511D.gif : Seoul Pavement Index

     PIC512D.gif : Pavement Distress Index

     PIC512E.gif : Crack Index (PIC515E.gif), (PIC515F.gif : Crack (%))

     PIC5170.gif : Rutting Index (PIC5171.gif), (PIC5172.gif : Rutting Depth (mm))

     PIC5183.gif : IRI Index (PIC5193.gif), (PIC5194.gif : International Roughness Index (m/km))

SPI๋Š” ์„ธ ๊ฐ€์ง€์˜ ๊ฐœ๋ณ„์  ํŒŒ์†์ง€์ˆ˜๋ฅผ ๋™๋“ฑํ•˜๊ฒŒ ๊ณ ๋ คํ•˜๊ณ  ์žˆ์œผ๋ฉฐ ์ผ๋ฐ˜์ ์œผ๋กœ ๋„๋กœํฌ์žฅ์˜ ๋ณด์ˆ˜๋ฅผ ๊ณ ๋ คํ•˜๊ณ  ์ค€๋น„ํ•˜๋Š” ๋ณด์ˆ˜๋Œ€์ƒ ๊ธฐ์ค€์„ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜ 6์œผ๋กœ ์„ค์ •ํ•˜๊ณ  ์žˆ๋‹ค. ์ด๋Š” ์กฐ์‚ฌ๊ตฌ๊ฐ„์— ๋Œ€ํ•œ ํฌ์žฅํ‰๊ฐ€ ์‹œ๊ธฐ์™€ ์‹ค์ œ ๋ณด์ˆ˜์‹œ๊ธฐ์™€์˜ ์‹œ๊ฐ„์ฐจ(์•ฝ 6๊ฐœ์›”~1๋…„ ์ด์ƒ)๋ฅผ ๊ณ ๋ คํ•œ ๊ฒƒ์ด๋‹ค. ๋˜ํ•œ, ์ฃผ์š” ๊ฐ„์„ ๋„๋กœ ๋ฐ ๋ฒ„์Šค ์ค‘์•™์ฐจ๋กœ์˜ ๊ฒฝ์šฐ 6~7 ์‚ฌ์ด์˜ ๊ตฌ๊ฐ„์— ๋Œ€ํ•ด์„œ๋„ ๊ธฐ๋Šฅ์  ์ค‘์š”๋„๋ฅผ ๊ณ ๋ คํ•˜์—ฌ ๋ณด์ˆ˜๋Œ€์ƒ๊ตฌ๊ฐ„์— ํฌํ•จํ•˜๊ณ  ์žˆ๋‹ค.

2.3 ์‹œ๋‹จ์œ„ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜(MPCI; Municipal Pavement Condition Index)

MPCI๋Š” ์ค‘ยท์†Œ๋„์‹œ์— ์ ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๋กœ ์„œ์šธ์‹œ ๋ฐ ๊ธฐํƒ€ ์‹œ๋‹จ์œ„ ๋„๋กœ ํฌ์žฅ์ƒํƒœ ์กฐ์‚ฌ ์ž๋ฃŒ๋ฅผ ์ด์šฉํ•˜์—ฌ ์•„์ŠคํŒ”ํŠธ ํฌ์žฅ์˜ ์ผ๋ฐ˜์  ํ‰๊ฐ€์š”์†Œ์ธ ๊ท ์—ด, ์†Œ์„ฑ๋ณ€ํ˜•, ์ข…๋‹จ ํ‰ํƒ„์„ฑ ๋“ฑ 3๊ฐ€์ง€ ์š”์†Œ์— ๋Œ€ํ•œ ํ‰๊ฐ€๋ฅผ ํ†ตํ•ด ๊ฐœ๋ฐœํ•œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์ด๋‹ค. MPCI์˜ ๋ฒ”์œ„๋Š” SPI ์ง€์ˆ˜์™€ ๊ฐ™์ด ๋ณ€๋ณ„๋ ฅ์ด ์žˆ๋„๋ก 10์  ์ฒด๊ณ„๋กœ ํ•˜๋ฉฐ Eq. (3)์— ์˜ํ•ด ์‚ฐ์ถœ๋œ๋‹ค.

PIC51A5.gif (3)

PIC51A6.gif

Where, PIC51A7.gif : Municipal Pavement Condition Index

      PIC51B7.gif : PIC51B8.gif, (PIC51B9.gif : Crack(%))

      PIC51CA.gif : PIC51CB.gif, (PIC521A.gif : Rutting Depth (mm))

      PIC521B.gif : PIC522C.gif, (PIC522D.gif : International Roughness Index (m/km))

3. ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ๊ด€๋ฆฌ ์‹œ์Šคํ…œ

์ผ๋ฐ˜๋„๋กœ๋Š” ๊ณ ์†๊ตญ๋„๋ฅผ ์ œ์™ธํ•œ ๋„๋กœ๋กœ ์ผ๋ฐ˜๊ตญ๋„, ํŠน๋ณ„์‹œใƒป๊ด‘์—ญ์‹œ๋„, ์‹œ๋„, ์ง€๋ฐฉ๋„ ๋“ฑ์œผ๋กœ ๊ตฌ๋ถ„๋˜์–ด ์žˆ๋‹ค(MLIT, 2016). ์ง€์—ญ๋„๋กœ๋Š” ์ผ๋ฐ˜๋„๋กœ ์ค‘ ํŠน๋ณ„์‹œ, ๊ด‘์—ญ์‹œ๋ฅผ ์ œ์™ธํ•œ ์ง€์ž์ฒด ๊ด€ํ• ์ง€์—ญ ๋‚ด์˜ ๋„๋กœ๋กœ ์ง€์—ญ ๋‚ด์— ์ผ๋ฐ˜๊ตญ๋„๋ถ€ํ„ฐ ๊ตฐ๋„, ๊ตฌ๋„, ์ง€๋ฐฉ๋„๊นŒ์ง€ ๋‹ค์–‘ํ•œ ๋“ฑ๊ธ‰์˜ ๋„๋กœ ์ข…๋ฅ˜๊ฐ€ ๋ถ„ํฌํ•œ๋‹ค. ๊ด‘์—ญ์‹œ ์ดํ•˜์˜ ์ง€์ž์ฒด์—์„œ ๊ด€๋ฆฌํ•˜๋Š” ์ง€์—ญ๋„๋กœ์—๋Š” ๊ตํ†ต๋Ÿ‰๊ณผ ์ค‘์ฐจ๋Ÿ‰ ํ†ตํ–‰๋Ÿ‰์ด ๋งค์šฐ ์ ์€ ๊ตฌ๊ฐ„, 2์ฐจ๋กœ ์ดํ•˜์˜ ์ข์€ ๋„๋กœ, ๊ทธ๋ฆฌ๊ณ  ์„ค๊ณ„์†๋„๊ฐ€ 60km/h ์ดํ•˜์˜ ๋„๋กœ ๋“ฑ์ด ํฌํ•จ๋˜์–ด ์žˆ๋‹ค. ์ด๋Š” ํฌ์žฅ๊ด€๋ฆฌ์‹œ์Šคํ…œ์˜ ์šด์˜์„ ์œ„ํ•œ ํฌ์žฅ์กฐ์‚ฌ ์žฅ๋น„์˜ ์šด์šฉ, ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค ๊ด€๋ฆฌ ๋“ฑ ์˜ˆ์‚ฐ ํˆฌ์ž… ๋Œ€๋น„ ํšจ๊ณผ๊ฐ€ ๋–จ์–ด์ง€๋Š” ์†Œ๊ทœ๋ชจ ๋„๋กœ์˜ ์กด์žฌ๋ฅผ ์˜๋ฏธํ•œ๋‹ค. ๊ตํ†ต๋Ÿ‰์ด ์ž‘์€ ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ์˜ ๊ฒฝ์šฐ ๋„๋กœ๊ด€๋ฆฌ ๊ธฐ๊ด€์˜ ์ž…์žฅ์—์„œ ์ค‘์š”๋„๊ฐ€ ๋‚ฎ๊ธฐ ๋•Œ๋ฌธ์— ์ž๋™์กฐ์‚ฌ ์žฅ๋น„๋ฅผ ํ†ตํ•œ ํฌ์žฅ์ƒํƒœ ์กฐ์‚ฌ์— ๋ถ€๋‹ด์„ ๋Š๋ผ๊ณ  ์žˆ๋Š” ๊ฒƒ์ด ํ˜„์‹ค์ด๋‹ค. ๋”ฐ๋ผ์„œ ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๊ตํ†ต๋Ÿ‰ ๋ฐ ์ค‘์ฐจ๋Ÿ‰ ํ†ตํ–‰๋Ÿ‰์ด ๋งค์šฐ ์ ๊ณ  ์„ค๊ณ„์†๋„ 60km/h ์ดํ•˜ 2์ฐจ๋กœ ์ดํ•˜์˜ ์ข์€ ๋„๋กœ์˜ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€๋ฅผ ์œ„ํ•ด ์ธ๋ ฅ์„ ํ†ตํ•œ ์ €๋ ดํ•œ ํฌ์žฅ์กฐ์‚ฌ ๋ฐฉ๋ฒ•๊ณผ ์ด๋ฅผ ์ด์šฉํ•œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€๋ฐฉ๋ฒ•์„ ์ œ์‹œํ•˜๊ณ ์ž ํ•œ๋‹ค.

3.1 ๊ธฐ์กด ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜ ์ ์šฉ

๊ธฐ์กด ํ‰๊ฐ€์ง€์ˆ˜ ๋ถ„์„์„ ์œ„ํ•ด ๊ฒฝ์ƒ๋ถ๋„ ๊น€์ฒœ์‹œ ๊ด€๋‚ด 2์ฐจ๋กœ ์ดํ•˜์˜ ์ง€์—ญ๋„๋กœ 30๊ฐœ ๊ตฌ๊ฐ„ ๋„๋กœ์˜ ํฌ์žฅ์ƒํƒœ ์กฐ์‚ฌ๋ฅผ ์ˆ˜ํ–‰ํ•˜์˜€์œผ๋ฉฐ ๊ทธ ๊ฒฐ๊ณผ๋Š” Table 4์™€ ๊ฐ™๋‹ค. ๋™์ผํ•œ ๊ท ์—ด์œจ๊ณผ, ์†Œ์„ฑ๋ณ€ํ˜•, ํ‰ํƒ„์„ฑ ์ธก์ •๊ฐ’์„ ์‚ฌ์šฉํ•˜์˜€์Œ์—๋„ ๋ถˆ๊ตฌํ•˜๊ณ  ๊ณ ์†์ฃผํ–‰(์„ค๊ณ„์†๋„ 80km/h)์— ๋งž์ถฐ ์ œ์‹œ๋œ NHPCI๋กœ ํ‰๊ฐ€ํ•  ๊ฒฝ์šฐ 14๊ฐœ ๊ตฌ๊ฐ„์ด ์œ ์ง€๋ณด์ˆ˜๊ฐ€ ํ•„์š”ํ•œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋‚˜, ๋น„๊ต์  ์ €์†์ฃผํ–‰๊ณผ ๊ตํ†ต๋Ÿ‰์ด ๋งŽ์ง€ ์•Š์€ ๋„๋กœ์— ์ฃผ๋กœ ์ ์šฉ๋˜๋Š” MPCI์˜ ๊ฒฝ์šฐ๋Š” 2๊ฐœ ๊ตฌ๊ฐ„๋งŒ ์œ ์ง€๋ณด์ˆ˜๊ฐ€ ํ•„์š”ํ•œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ์ด๋Š” ๊ฐ๊ฐ์˜ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๊ฐ€ ๋„๋กœ์˜ ์šฉ๋Ÿ‰, ์„ค๊ณ„์†๋„, ํ†ตํ–‰๋Ÿ‰, ์ง€์—ญ์  ํŠน์„ฑ์— ๋”ฐ๋ผ ์•Œ๋งž๊ฒŒ ์กฐ์ •๋˜์–ด์•ผ ํ•จ์„ ์˜๋ฏธํ•œ๋‹ค.

Table 4. Investigated Result of Pavement Condition Table_KSCE_38_3_10_T4.jpg

์กฐ์‚ฌ๋Œ€์ƒ ๊ตฌ๊ฐ„์˜ ํฌ์žฅ์ง€์ˆ˜ํ‰๊ฐ€๊ฒฐ๊ณผ์˜ ํƒ€๋‹น์„ฑ์„ ๊ฒ€ํ† ํ•˜๊ธฐ ์œ„ํ•ด ํฌ์žฅ ์ „๊ณต์ž, ๋„๋กœ๊ด€๋ฆฌ๊ธฐ๊ด€์†Œ์†์˜ ๊ด€๋ฆฌ์ž๋กœ ๊ตฌ์„ฑ๋œ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์„ ๊ตฌ์„ฑํ•˜๊ณ  ์ธก์ •๋Œ€์ƒ ๊ตฌ๊ฐ„์—์„œ ์„ค๋ฌธ์กฐ์‚ฌ๋ฅผ ์‹œํ–‰ํ•˜์˜€๋‹ค. ์„ค๋ฌธ์€ ์กฐ์‚ฌ๋Œ€์ƒ ๊ตฌ๊ฐ„์„ ๋„๋ณด๋กœ ์ด๋™ํ•˜๋ฉด์„œ Table 5์™€ ๊ฐ™์ด ํฌ์žฅ์ƒํƒœ์— ๋”ฐ๋ผ ์ ์ˆ˜๋ฅผ ๋ถ€์—ฌํ•˜๋„๋ก ํ•˜์˜€๋‹ค. ํ‰๊ฐ€์ ์ˆ˜ 4์  ์ดํ•˜์˜ ๊ฒฝ์šฐ๋Š” ์œ ์ง€๋ณด์ˆ˜๊ฐ€ ํ•„์š”ํ•œ ์ˆ˜์ค€์„ ์˜๋ฏธํ•œ๋‹ค. ์กฐ์‚ฌ๊ฒฐ๊ณผ๋Š” Table 6๊ณผ ๊ฐ™๋‹ค.

์„ค๋ฌธ์กฐ์‚ฌ ๊ฒฐ๊ณผ๋Š” ๋น„๊ต์  ๋„๋กœ์šฉ๋Ÿ‰์ด ์ง€์—ญ๋„๋กœ์™€ ๋น„์Šทํ•œ MPCI ๋ถ„์„๊ฒฐ๊ณผ์™€๋„ ์ฐจ์ด๊ฐ€ ์žˆ์—ˆ๋‹ค. 1๋ฒˆ ๊ตฌ๊ฐ„์˜ ๊ฒฝ์šฐ MPCI 3.64๋กœ ์œ ์ง€๋ณด์ˆ˜๊ฐ€ ํ•„์š”ํ•œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋‚˜ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์€ ํ‰๊ท  9์ ์œผ๋กœ ๋งค์šฐ ์–‘ํ˜ธํ•œ ์ˆ˜์ค€์œผ๋กœ ํŒ๋‹จํ•˜์˜€๋‹ค. ๊ธฐ์กด ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์™€ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ํ‰๊ฐ€๊ฒฐ๊ณผ๊ฐ€ ์ƒ์ดํ•œ ๊ฒƒ์€ Table 4์— ๋‚˜ํƒ€๋‚œ ๊ฒƒ๊ณผ ๊ฐ™์ด ๊ท ์—ด์€ ์—†์œผ๋‚˜ ํ‰ํƒ„์„ฑ ์ง€ํ‘œ์ธ IRI๊ฐ€ 7.29m/km๋กœ ๋†’๊ฒŒ ์ธก์ •๋˜์–ด MPCI๋ฅผ ๋น„๋กฏํ•œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๊ฐ€ ๋‚ฎ๊ฒŒ ์‚ฐ์ •๋˜์—ˆ๋‹ค. ๋ฐ˜๋ฉด ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์€ ์œก์•ˆ์œผ๋กœ ํ‰ํƒ„์„ฑ ํ™•์ธ์ด ์–ด๋ ต๊ธฐ ๋•Œ๋ฌธ์— ํ‰ํƒ„์„ฑ์— ๋Œ€ํ•œ ๊ณ ๋ ค ์—†์ด ๊ท ์—ด์ด ์—†๋Š” ํ‘œ๋ฉด์ƒํƒœ์— ๋”ฐ๋ผ ๋†’์€ ์ ์ˆ˜๋ฅผ ๋ถ€์—ฌํ•œ ๊ฒƒ์œผ๋กœ ํŒ๋‹จ๋˜์—ˆ๋‹ค.

์ž๋™์กฐ์‚ฌ ์žฅ๋น„๋ฅผ ํ†ตํ•œ ์กฐ์‚ฌ๊ฒฐ๊ณผ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ๊ธฐ์กด ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๋ฅผ ์‚ฐ์ •ํ•˜์—ฌ ํฌ์žฅ์˜ ์ƒํƒœ๋ฅผ ํ‰๊ฐ€ํ•œ ๊ฒฐ๊ณผ ๊ตํ†ต์šฉ๋Ÿ‰์ด ์ž‘์€ ์†Œ๊ทœ๋ชจ ๋„๋กœ์— ์ ์šฉํ•˜๊ธฐ์—๋Š” ๋ฌด๋ฆฌ๊ฐ€ ์žˆ๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ ์œก์•ˆ์„ ํ†ตํ•œ ๊ด€์ฐฐ ๊ฒฐ๊ณผ์™€ ์ž๋™์กฐ์‚ฌ ์žฅ๋น„ ์ธก์ •๊ฒฐ๊ณผ์—๋„ ๋‹ค์†Œ๊ฐ„์˜ ์ฐจ์ด๊ฐ€ ์žˆ๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋˜ํ•œ, ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ๊ฒฝ์šฐ ์‹ค์ œ ๋„๋กœ์˜ ๊ตํ†ต๋Ÿ‰, ๊ทœ๋ชจ, ์ค‘์š”๋„ ๋“ฑ์„ ๋ณด๊ณ  ํฌ์žฅ์ƒํƒœ ํ‰๊ฐ€์‹œ ์ฃผ๊ด€์ ์ธ ํŒ๋‹จ์ด ์ž‘์šฉํ•˜๋Š” ๊ฒฝํ–ฅ์„ ๋ณด์˜€๋‹ค. ์ฆ‰, ๊ตํ†ต๋Ÿ‰์ด ์ ์€ ์ง€๋ฐฉ๋„์˜ ๊ฒฝ์šฐ ์–ด๋Š ์ •๋„์˜ ๊ท ์—ด์ด๋‚˜ ์†Œ์„ฑ๋ณ€ํ˜•์— ์žˆ๋”๋ผ๋„ ๋ณด์ˆ˜ ํ•  ํ•„์š”๊ฐ€ ์—†๋Š” ๊ฒƒ์œผ๋กœ ํŒ๋‹จํ•˜์˜€์œผ๋ฉฐ, ํ‰ํƒ„์„ฑ์˜ ๊ฒฝ์šฐ์—๋Š” ํฌ์žฅ์ƒํƒœ ํŒ๋‹จ์— ๊ฑฐ์˜ ์˜ํ–ฅ์„ ๋ฏธ์น˜์ง€ ์•Š๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

Table 5. Pavement Condition by Index Table_KSCE_38_3_10_T5.jpg
Table 6. Survey Data according to Crack Table_KSCE_38_3_10_T6.jpg

3.2 ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜

์ง€์—ญ๋„๋กœ ์ค‘์—์„œ๋„ 2์ฐจ๋กœ ์ดํ•˜์˜ ์†Œ๊ทœ๋ชจ ๋„๋กœ์˜ ๊ฒฝ์šฐ ์•ž์„œ ์‚ดํŽด๋ณธ ๋ฐ”์™€ ๊ฐ™์ด ๊ธฐ์กด ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์˜ ์ ์šฉ์ด ์–ด๋ ค์šฐ๋ฉฐ, ์กฐ์‚ฌ์™€ ๋ถ„์„์— ๋น„์šฉ์ด ๋งŽ์ด ๋“œ๋Š” ์ž๋™์กฐ์‚ฌ ์žฅ๋น„์˜ ์ด์šฉ์— ๋„๋กœ๊ด€๋ฆฌ๊ธฐ๊ด€์ด ๋ถ€๋‹ด์„ ๋Š๋ผ๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๋น„๊ต์  ๋น„์šฉ์ด ์ €๋ ดํ•œ ์ธ๋ ฅ์— ์˜ํ•œ ์กฐ์‚ฌ๋ฐฉ๋ฒ•์„ ๊ฒ€ํ† ํ•˜์˜€๋‹ค. ์ธ๋ ฅ์กฐ์‚ฌ์˜ ๊ฒฝ์šฐ ์œก์•ˆ์œผ๋กœ ๋„๋กœ์ƒํƒœ๋ฅผ ๊ด€์ธกํ•˜๊ธฐ ๋•Œ๋ฌธ์— ํ‰ํƒ„์„ฑ์— ๋Œ€ํ•œ ํ‰๊ฐ€๋Š” ์–ด๋ ค์šฐ๋ฉฐ, ์‹ค์ œ ๊ฐ๊ด€์  ์ธก์ •์ž๋ฃŒ๋กœ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ๋ถ€๋ถ„์€ ๊ท ์—ด์˜ ์ธก์ •์— ํ•œ์ •๋˜๋Š” ๊ฒƒ์ด ์‚ฌ์‹ค์ด๋‹ค.

ํ˜„์‹ค์ ์ธ ์ด์œ  ์™ธ์—๋„ ๊ท ์—ด์œจ๋งŒ์œผ๋กœ ํฌ์žฅ์ƒํƒœ๋ฅผ ํ‰๊ฐ€ํ•˜๊ณ ์ž ํ•œ ๊ฒƒ์€ ์„ค๋ฌธ์กฐ์‚ฌ ๊ณผ์ •์—์„œ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ์†Œ๊ทœ๋ชจ ๋„๋กœ์˜ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์— ๊ท ์—ด์œจ์ด ๊ฐ€์žฅ ํฐ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์š”์†Œ์˜€๊ธฐ ๋•Œ๋ฌธ์ด์—ˆ๋‹ค. ๊ท ์—ด์œจ๋งŒ์œผ๋กœ ํฌ์žฅ์ƒํƒœ๋ฅผ ํ‰๊ฐ€ํ•œ ์‚ฌ๋ก€๋ฅผ ์‚ดํŽด๋ณธ ๊ฒฐ๊ณผ ์ผ๋ณธ์—์„œ๋„ ๊ฐœ๋ณ„๊ฒฐํ•จ ์ง€์ˆ˜์˜ ์‚ฐ์ •์ด ์–ด๋ ค์šด ๊ตฌ๊ฐ„์— ๋Œ€ํ•ด ๊ท ์—ด์œจ๋งŒ์œผ๋กœ ํฌ์žฅ์ƒํƒœ๋ฅผ ํ‰๊ฐ€ํ•˜๋Š” Eq. (4)์™€ ๊ฐ™์€ MCI (Maintenance Control Index)๋ฅผ ์‚ฌ์šฉํ•˜๊ณ  ์žˆ๋Š” ๊ฒƒ์œผ๋กœ ์กฐ์‚ฌ๋˜์—ˆ๋‹ค(MLIT, 2013).

PIC523D.gif (4)

Where, PIC523E.gif : Maintenance Control Index

      PIC523F.gif : Maintenance Controal Index according to Crack

      PIC5250.gif  : Crack (%)

      PIC5261.gif  : Rutting (mm)

      PIC5262.gif   : Roughness in Longitudinal (mm)

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ์•ž์„œ ์ž๋™์กฐ์‚ฌ ์žฅ๋น„๋ฅผ ์‚ฌ์šฉํ•œ ์กฐ์‚ฌ์™€ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ์„ค๋ฌธ์กฐ์‚ฌ ๋Œ€์ƒ ๊ตฌ๊ฐ„ 30๊ฐœ์†Œ์— ๋Œ€ํ•ด ์ธ๋ ฅ ์œก์•ˆ ์กฐ์‚ฌ๋กœ ๊ท ์—ด์˜ ๊ธธ์ด๋ฅผ ์ธก์ •ํ•˜๊ณ  ๊ท ์—ด์œจ์„ ๊ณ„์‚ฐํ•˜์˜€๋‹ค. ์œก์•ˆ์กฐ์‚ฌ์ค‘ ๊ท ์—ด์€ ์„ ํ˜•๊ท ์—ด๊ณผ ๋ฉด์ ๊ท ์—ด๋กœ ๊ตฌ๋ถ„ํ•˜์—ฌ ์ธก์ •ํ•˜์˜€์œผ๋ฉฐ ๊ฑฐ๋ถ๋“ฑ ๊ท ์—ด์˜ ๊ฒฝ์šฐ ํญ, ๊ธธ์ด๋ฅผ ์ธก์ •ํ•˜์—ฌ ๋ฉด์ ๊ท ์—ด๋กœ ๋ฐ˜์˜ํ•˜์˜€๋‹ค.

Table 7๊ณผ ๊ฐ™์ด ์œก์•ˆ์กฐ์‚ฌํ•œ ๊ท ์—ด์œจ๊ณผ ์„ค๋ฌธ์กฐ์‚ฌ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ Fig. 3๊ณผ ๊ฐ™์ด ํšŒ๊ท€๋ถ„์„์„ ํ†ตํ•ด Eq. (5)์™€ ๊ฐ™์€ ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜(NRPCI, Narrow Regional Road Pavement Condition Index)๋ฅผ ์ œ์‹œํ•˜์˜€๋‹ค.

Fig. 3.

Result of Survey According to Crack

Figure_KSCE_38_3_10_F3.jpg
Table 7. Survey Data according to Crack Table_KSCE_38_3_10_T7.jpg

PIC5263.gif (5)

Where, PIC5273.gif : Narrow Regional Road Pavement Condition Index

      PIC5274.gif     : Crack (%)

์กฐ์‚ฌ๊ฒฐ๊ณผ๋ฅผ Table 2์˜ ์ง‘์‚ฐ, ๊ตญ์ง€๋„๋กœ(์ง€๋ฐฉ๋„) ๊ท ์—ด์œจ ๊ฒฐํ•จ ๊ฒฝ๊ณ„๊ธฐ์ค€์ธ ๊ท ์—ด์œจ 20% ์ด์ƒ์— ์ ์šฉํ•  ๊ฒฝ์šฐ Fig. 3๊ณผ ๊ฐ™์ด ์œ ์ง€๋ณด์ˆ˜๊ฐ€ ํ•„์š”ํ•œ ์‹œ์ ์˜ NRPCI๋Š” 3.1์ ์œผ๋กœ ์‚ฐ์ •๋˜์—ˆ์œผ๋ฉฐ, ๋”ฐ๋ผ์„œ NRPCI์— ์˜ํ•œ ๋„๋กœํฌ์žฅ์˜ ์œ ์ง€๋ณด์ˆ˜ ๊ฒฝ๊ณ„์น˜๋Š” 4 ์ดํ•˜๋กœ ๊ฒฐ์ •ํ•˜๋Š” ๊ฒƒ์ด ํƒ€๋‹นํ•œ ๊ฒƒ์œผ๋กœ ํŒ๋‹จ๋œ๋‹ค.

์ž๋™์กฐ์‚ฌ์žฅ๋น„์™€ ์œก์•ˆ์กฐ์‚ฌ ๊ฒฐ๊ณผ์— ์˜ํ•œ ๊ท ์—ด์œจ๋กœ NRPCI์˜ ๊ณ„์ˆ˜๋ฅผ ๊ฒฐ์ •ํ•˜์—ฌ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ํ‰๊ฐ€๊ฒฐ๊ณผ์™€ ๋น„๊ตํ•˜๋ฉด, ์œก์•ˆ์กฐ์‚ฌ์— ์˜ํ•œ NRPCI์˜ R2๋Š” 0.91์ด์—ˆ์œผ๋ฉฐ, ์ž๋™์กฐ์‚ฌ์žฅ๋น„์˜ ๊ฒฝ์šฐ๋Š” R2๊ฐ€ 0.58์œผ๋กœ ์œก์•ˆ์กฐ์‚ฌ์— ์˜ํ•œ ๊ท ์—ด์œจ์ด ํ˜„์žฅํ‰๊ฐ€๊ฒฐ๊ณผ์™€ ๋” ์œ ์‚ฌ์„ฑ์„ ๊ฐ–๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ์ด์— ๋Œ€ํ•œ ์›์ธ์€ ๊ท ์—ด์œจ ์‚ฐ์ •๋ฐฉ์‹์—์„œ ๊ธฐ์ธํ•œ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ์ž๋™์กฐ์‚ฌ์žฅ๋น„์˜ ๊ฒฝ์šฐ ๊ตด์ฐฉ๋ณต๊ตฌ๋‚˜ ํŒจ์นญ๋œ ๋ถ€๋ถ„๊นŒ์ง€ ๊ท ์—ด๋กœ ํŒŒ์•…ํ•˜๊ณ  ๊ท ์—ด์œจ๋กœ ๊ณ„์‚ฐํ•œ ๋ฐ˜๋ฉด ์œก์•ˆ์กฐ์‚ฌ์—์„œ๋Š” ๋ณต๊ตฌ๋œ ๋ถ€๋ถ„์„ ๊ท ์—ด๋กœ ํŒ๋‹จํ•˜์ง€ ์•Š์•˜๋‹ค. ์‹ค์ œ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน๋„ ๊ตด์ฐฉ๋ณต๊ตฌ๋œ ๋„๋กœ์— ๋Œ€ํ•ด ํŒŒ์†์œผ๋กœ ํŒ๋‹จํ•˜์ง€ ์•Š์•˜์œผ๋ฉฐ ๋”ฐ๋ผ์„œ ์ž๋™์กฐ์‚ฌ์žฅ๋น„์˜ ๋ถ„์„๊ฒฐ๊ณผ์™€ ์œก์•ˆ์กฐ์‚ฌ ๊ฒฐ๊ณผ์™€์˜ ์ฐจ์ด๊ฐ€ ๋ฐœ์ƒํ•˜๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

3.3 ํ˜„์žฅ ์ ์šฉ ๊ฒฐ๊ณผ

NHPCI, SPI, MPCI์˜ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๋Š” ๊ฐ ํ‰๊ฐ€์ง€์ˆ˜์˜ ๊ตฌ๊ฐ„์„ 5๋‹จ๊ณ„๋กœ ์„ธ๋ถ„ํ™”ํ•˜์—ฌ ํฌ์žฅ์ƒํƒœ๋ฅผ ์ •์˜ํ•˜์˜€์œผ๋‚˜ ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ์˜ ๊ฒฝ์šฐ ๋„๋กœ์˜ ์ค‘์š”๋„๊ฐ€ ๋‚ฎ๊ธฐ ๋•Œ๋ฌธ์— ํšจ์œจ์ ์ธ ๊ด€๋ฆฌ๋ฅผ ์œ„ํ•ด 3๋‹จ๊ณ„๋กœ ๋‹จ์ˆœํ™”ํ•˜์˜€์œผ๋ฉฐ ๊ด€๋ฆฌ๊ธฐ์ค€์€ Table 8๊ณผ ๊ฐ™์ด ์ œ์‹œํ•˜์˜€๋‹ค.

NRPCI์˜ ์ ์šฉ์„ฑ์„ ๊ฒ€ํ† ํ•˜๊ธฐ ์œ„ํ•ด Eq. (5)๋ฅผ ๊ฒฐ์ •ํ•˜๊ธฐ ์œ„ํ•œ ๋ฐ์ดํ„ฐ๋ฅผ ์–ป์€ ์กฐ์‚ฌ๊ตฌ๊ฐ„๊ณผ ์œ ์‚ฌํ•œ ๋„๋กœ์šฉ๋Ÿ‰๊ณผ ๊ตํ†ต๋Ÿ‰์„ ๊ฐ–๋Š” ๊น€์ฒœ์‹œ ๊ด€๋‚ด ๋„๋กœ 30๊ฐœ ๊ตฌ๊ฐ„์— ๋Œ€ํ•ด ์œก์•ˆ๊ด€์ฐฐ์— ์˜ํ•œ ๊ท ์—ด์œจ ์กฐ์‚ฌ๋ฅผ ์‹ค์‹œํ•˜์˜€๋‹ค. ์กฐ์‚ฌ๋œ ๊ท ์—ด์œจ๋กœ Eq. (5)๋ฅผ ํ†ตํ•ด NRPCI๋ฅผ ๊ณ„์‚ฐํ•˜์˜€์œผ๋ฉฐ, ๊ทธ ๊ฒฐ๊ณผ๋Š” Table 9์™€ ๊ฐ™๋‹ค. ์ดํ›„ ์•ž์„œ ์„ค๋ฌธ์กฐ์‚ฌ์™€ ๊ฐ™์ด ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน 10์ธ์—๊ฒŒ ์กฐ์‚ฌ๋œ ๊ตฌ๊ฐ„์— ๋Œ€ํ•œ ํ‰๊ฐ€๋ฅผ ์˜๋ขฐํ•˜์˜€์œผ๋ฉฐ Table 9์— ๊ทธ ๊ฒฐ๊ณผ๋ฅผ NRPCI ๊ฒฐ๊ณผ์™€ ๋น„๊ตํ•˜์˜€๋‹ค.

์ƒˆ๋กœ ์กฐ์‚ฌ๋œ ๊ตฌ๊ฐ„์—์„œ NRPCI๋กœ ํ‰๊ฐ€๋œ ์œ ์ง€๋ณด์ˆ˜ ํ•„์š”๊ตฌ๊ฐ„์€ ์ด 4๊ณณ์ด๋ฉฐ, ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ์„ค๋ฌธ๊ฒฐ๊ณผ์™€ ์ผ์น˜ํ•˜๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๋˜ํ•œ NRPCI ๊ฐ’๊ณผ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ์„ค๋ฌธ๊ฒฐ๊ณผ์™€์˜ R2๋Š” 0.88๋กœ ์ƒ๋‹นํžˆ ๋†’์€ ์ˆ˜์ค€์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

์ธ๋ ฅ์— ์˜ํ•œ ์œก์•ˆ์กฐ์‚ฌ๋ฅผ ํ†ตํ•œ ๊ท ์—ด์œจ ์กฐ์‚ฌ์™€ ์ด๋ฅผ ์ด์šฉํ•˜์—ฌ NRPCI์˜ ์‚ฐ์ •์ด ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ์˜ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์— ์ ์šฉ๋  ์ˆ˜ ์žˆ๋Š” ๊ฐ€๋Šฅ์„ฑ์„ ํ™•์ธํ•˜์˜€๋‹ค. ๋ณธ ์—ฐ๊ตฌ๋Š” ํ•œ์ •๋œ ์กฐ์‚ฌ๊ตฌ๊ฐ„๊ณผ ์œ ์‚ฌํ•œ ๊ตํ†ต, ํ™˜๊ฒฝ์กฐ๊ฑด์—์„œ ๋น„๊ต๋˜์—ˆ๊ธฐ ๋•Œ๋ฌธ์— ๋†’์€ ์ˆ˜์ค€์˜ ํ‰๊ฐ€ ์ ํ•ฉ์„ฑ์„ ๋‚˜ํƒ€๋‚ด์—ˆ๋‹ค. ๋‹ค๋งŒ ๋” ๋งŽ์€ ์กฐ์‚ฌ์™€ ์ž๋ฃŒ์ˆ˜์ง‘์œผ๋กœ ์ œ์‹œ๋œ ์‹์˜ ๊ณ„์ˆ˜๋ฅผ ๊ฒฐ์ •ํ•  ๊ฒฝ์šฐ ๊ด€ํ•  ์ง€์—ญ ๋‚ด ์†Œ๊ทœ๋ชจ ๋„๋กœ์— ๋Œ€ํ•œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€๊ฐ€ ๊ฐ€๋Šฅํ•  ๊ฒƒ์ด๋‹ค.

์˜ˆ์‚ฐ ๋ถ€์กฑ์˜ ์ด์œ ๋กœ ๋“ฑํ•œ์‹œ๋˜์—ˆ๋˜ ์†Œ๊ทœ๋ชจ ๋„๋กœ์— ๋Œ€ํ•œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€๋ฅผ ๊ฒฝ์ œ์ ์œผ๋กœ ์ˆ˜ํ–‰ํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์ถ•์ ๋œ ๋ฐ์ดํ„ฐ๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ๋”์šฑ ํ•ฉ๋ฆฌ์ ์ธ ๋„๋กœ ์œ ์ง€๋ณด์ˆ˜ ์˜ˆ์‚ฐ์˜ ๊ด€๋ฆฌ๊ฐ€ ์ด๋ฃจ์–ด์งˆ ์ˆ˜ ์žˆ์œผ๋ฏ€๋กœ ์ง€์—ญ์˜ ๋„๋กœ๊ด€๋ฆฌ์— ํฐ ๋„์›€์ด ๋  ๊ฒƒ์œผ๋กœ ๊ธฐ๋Œ€๋œ๋‹ค.

Table 8. Standard for Pavement Management in Narrow Regional Road Table_KSCE_38_3_10_T8.jpg
Table 9. NRPCI Data According to CrackTable_KSCE_38_3_10_T9.jpg

4. ๊ฒฐ ๋ก 

๋ณธ ์—ฐ๊ตฌ๋Š” ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ์˜ ํฌ์žฅ์ƒํƒœ๋ฅผ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•ด ํฌ์žฅ์ƒํƒœ ํ‰๊ฐ€์ง€์ˆ˜ ๊ฐœ๋ฐœ๊ณผ ๋“ฑ๊ธ‰์ฒด๊ณ„๋ฅผ ์ œ์‹œํ•˜๊ณ ์ž ํ•˜์˜€์œผ๋ฉฐ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฒฐ๋ก ์„ ์–ป์„ ์ˆ˜ ์žˆ์—ˆ๋‹ค.

(1)ํฌ์žฅ์ƒํƒœ ์กฐ์‚ฌ๊ฒฐ๊ณผ๋กœ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๋ฅผ ์‚ฐ์ •ํ•˜์—ฌ ๋น„๊ตํ•œ ๊ฒฐ๊ณผ ๋„๋กœ์šฉ๋Ÿ‰, ์†๋„, ๋„๋กœ๊ตฌ์กฐ ๋“ฑ์— ๋”ฐ๋ผ ๊ฒฐ๊ณผ์—์„œ ํฐ ์ฐจ์ด๊ฐ€ ์žˆ์—ˆ์œผ๋ฉฐ, ๋”ฐ๋ผ์„œ ๊ตํ†ต๋Ÿ‰์ด ์ ๊ณ  ์„ค๊ณ„์†๋„๊ฐ€ ๋‚ฎ์€ ์ง€์—ญ์˜ ์†Œ๊ทœ๋ชจ ๋„๋กœ์˜ ๊ฒฝ์šฐ ๊ทธ์— ๋งž๋Š” ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜๊ฐ€ ํ•„์š”ํ•œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ์˜ ๊ฒฝ์šฐ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ํ‰๊ฐ€ ๊ฒฝํ–ฅ์„ ์‚ดํŽด๋ณด๋ฉด ํ‰ํƒ„์„ฑ๊ณผ ์†Œ์„ฑ๋ณ€ํ˜•๋ณด๋‹ค๋Š” ๊ท ์—ด ๋ฐœ์ƒ ์ •๋„๊ฐ€ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์— ํฐ ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ๊ฒƒ์œผ๋กœ ํŒŒ์•…๋˜์—ˆ๋‹ค.

(2)์ธ๋ ฅ์„ ํ†ตํ•œ ์œก์•ˆ์กฐ์‚ฌ๋กœ ์ธก์ •ํ•œ ๊ท ์—ด์œจ๊ณผ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€ ๊ฒฐ๊ณผ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ํฌ์žฅ์ƒํƒœ ํ‰๊ฐ€์ง€์ˆ˜๋ฅผ ์ œ์‹œํ•˜์˜€๋‹ค. ์ž๋™์กฐ์‚ฌ์žฅ๋น„์— ์˜ํ•œ ๊ท ์—ด์œจ ์ธก์ •์ž๋ฃŒ๋ฅผ ํ†ตํ•œ ํ‰๊ฐ€์ง€์ˆ˜์˜ ์ œ์‹œ๋ณด๋‹ค ์œก์•ˆ์กฐ์‚ฌ์— ์˜ํ•œ ํ‰๊ฐ€๊ฐ€ ์‹ค์ œ ๋„๋กœ์ƒํƒœ๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š”๋ฐ ๋ณด๋‹ค ์ ํ•ฉํ•˜์˜€์œผ๋ฉฐ, ์ด๋Š” ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ์˜ ํŠน์„ฑ์ƒ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน์˜ ํ‰๊ฐ€์—์„œ๋Š” ๊ตด์ฐฉ๋ณต๊ตฌ๋‚˜ ์†ŒํŒŒ๋ณด์ˆ˜์— ๋Œ€ํ•ด ์‚ฌ์šฉ์ด ๊ฐ€๋Šฅํ•œ ์ƒํƒœ๋กœ ํŒ๋‹จํ•œ ๋ฐ˜๋ฉด ์ž๋™์กฐ์‚ฌ์žฅ๋น„์—์„œ๋Š” ์ด๋ฅผ ๊ท ์—ด์œจ์— ๋ฐ˜์˜ํ•˜์˜€๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค.

(3)์ œ์‹œ๋œ ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์˜ ๊ฒ€์ฆ์„ ์œ„ํ•ด ์œ ์‚ฌํ•œ ๊ตํ†ตยทํ™˜๊ฒฝ์กฐ๊ฑด์˜ ๋„๋กœ์— ๋Œ€ํ•ด ๊ท ์—ด์œจ ์ธก์ •๊ณผ ์ „๋ฌธ๊ฐ€ ๊ทธ๋ฃน ํ‰๊ฐ€๋ฅผ ์‹ค์‹œํ•˜์˜€์œผ๋ฉฐ, R2๊ฐ€ 0.88๋กœ ์ƒ๋‹นํžˆ ๋†’์€ ๊ฐ’์„ ๋‚˜ํƒ€๋‚ด์—ˆ๋‹ค. ์ œํ•œ๋œ ์กฐ๊ฑดํ•˜์—์„œ ๊ท ์—ด์œจ์„ ํ†ตํ•œ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์ง€์ˆ˜์˜ ์ ์šฉ์ด ๊ฐ€๋Šฅํ•œ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ, ํ–ฅํ›„ ์ถ”๊ฐ€์ ์ธ ์กฐ์‚ฌ์ž๋ฃŒ๋ฅผ ํ†ตํ•ด ์ œ์‹œ๋œ ์‹์„ ๋ณด์™„ํ•œ๋‹ค๋ฉด ์†Œ๊ทœ๋ชจ ์ง€์—ญ๋„๋กœ์˜ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€์— ํ™œ์šฉ ๊ฐ€๋Šฅํ•˜์—ฌ ๋ณด๋‹ค ๊ฒฝ์ œ์ ์ธ ํฌ์žฅ์ƒํƒœํ‰๊ฐ€๋ฐฉ๋ฒ•์œผ๋กœ ์ง€์—ญ์˜ ๋„๋กœ๊ด€๋ฆฌ์™€ ์˜ˆ์‚ฐ์ ˆ๊ฐ์— ํšจ๊ณผ๊ฐ€ ์žˆ์„ ๊ฒƒ์œผ๋กœ ๊ธฐ๋Œ€๋œ๋‹ค.

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