岩石力学与工程学报
巖石力學與工程學報
암석역학여공정학보
CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING
2013年
z2期
3413-3420
,共8页
隧道工程%沉管隧道%沉降%沉降差%施工
隧道工程%沉管隧道%沉降%沉降差%施工
수도공정%침관수도%침강%침강차%시공
tunneling engineering%immersed tunnel%settlement%differential settlement%construction
收集国内外19座沉管隧道的沉降实测数据，分析施工期间沉降、工后沉降、总沉降以及施工期间沉降和总沉降引起的管段首尾沉降差、管段之间接头处沉降差的变化规律。统计结果表明：施工期间沉降量平均值为53 mm，一般不超过100 mm；总沉降的平均值为108 mm，一般不超过200 mm；施工期间沉降占总沉降的比例平均值为56%，表明施工期间沉降是沉管隧道总沉降的主要原因；沉管隧道工后主要以产生沉降为主，正常情况下工后沉降较小；施工期间沉降和总沉降引起的管段首尾沉降差平均值分别为21和40 mm；施工期间沉降和总沉降引起的管段之间接头处沉降差平均值分别为18和12 mm。管段首尾沉降差平均值大于管段之间接头处沉降差，沉管隧道很有可能因为不均匀沉降而导致隧道开裂。
收集國內外19座沉管隧道的沉降實測數據，分析施工期間沉降、工後沉降、總沉降以及施工期間沉降和總沉降引起的管段首尾沉降差、管段之間接頭處沉降差的變化規律。統計結果錶明：施工期間沉降量平均值為53 mm，一般不超過100 mm；總沉降的平均值為108 mm，一般不超過200 mm；施工期間沉降佔總沉降的比例平均值為56%，錶明施工期間沉降是沉管隧道總沉降的主要原因；沉管隧道工後主要以產生沉降為主，正常情況下工後沉降較小；施工期間沉降和總沉降引起的管段首尾沉降差平均值分彆為21和40 mm；施工期間沉降和總沉降引起的管段之間接頭處沉降差平均值分彆為18和12 mm。管段首尾沉降差平均值大于管段之間接頭處沉降差，沉管隧道很有可能因為不均勻沉降而導緻隧道開裂。
수집국내외19좌침관수도적침강실측수거，분석시공기간침강、공후침강、총침강이급시공기간침강화총침강인기적관단수미침강차、관단지간접두처침강차적변화규률。통계결과표명：시공기간침강량평균치위53 mm，일반불초과100 mm；총침강적평균치위108 mm，일반불초과200 mm；시공기간침강점총침강적비례평균치위56%，표명시공기간침강시침관수도총침강적주요원인；침관수도공후주요이산생침강위주，정상정황하공후침강교소；시공기간침강화총침강인기적관단수미침강차평균치분별위21화40 mm；시공기간침강화총침강인기적관단지간접두처침강차평균치분별위18화12 mm。관단수미침강차평균치대우관단지간접두처침강차，침관수도흔유가능인위불균균침강이도치수도개렬。
The measured data of settlement from 19 immersed tunnels were collected at home and abroad. The changing regularity of construction settlement,post-construction settlement,total settlement and the differential settlement between both ends of tube and its joints were analyzed. The statistical results show that:(1) the average value of construction settlement is 53 mm,which is no more than 100 mm in general;(2) the average value of total settlement is 108 mm,which is no more than 200 mm in general;(3) the construction settlement takes an average percentage of 56% in the total settlement,indicating construction settlement is the main reason for the total settlement. The settlement grows up after the construction but the post-construction settlement is small in general;and the average differential settlement between both ends of tube caused by construction and total settlement are 21 and 40 mm,respectively. The differential settlement at the tube joints caused by construction and total settlement are 18 and 12 mm,respectively. The differential settlement between both ends of tube is larger than that in joints,which can easily lead to cracking of immersed tunnel.
