CAJ | 학술논문

西安地铁四号线五路口站处于工程地质条件较复杂的地段，采用半幅铺盖明挖顺作法施工。其围护结构利用钻孔灌注桩加水平旋喷桩止水，在桩顶部设置冠梁和连系梁。本文阐述了该围护结构的特点、主要施工工艺、施工难点及解决措施、围护结构水平位移和沉降的监测方案。结果显示，桩顶累计水平位移6.7 mm，桩体累计沉降6.6 mm，满足基坑稳定和安全的要求。
서안지철사호선오로구참처우공정지질조건교복잡적지단，채용반폭포개명알순작법시공。기위호결구이용찬공관주장가수평선분장지수，재장정부설치관량화련계량。본문천술료해위호결구적특점、주요시공공예、시공난점급해결조시、위호결구수평위이화침강적감측방안。결과현시，장정루계수평위이6.7 mm，장체루계침강6.6 mm，만족기갱은정화안전적요구。
W u Lukou station of Xi'an 4# subway locates in the complex engineering geological area and the half blanket and open excavation method should be adopted in construction. T he retaining structure of foundation is the occlusion of bored pile and horizontal jet grouting pile and setting top beam and tie beam at the top of pile. T his paper discussed the characteristics,the main construction technology,construction difficulty and solving measures for such retaining structure and the monitoring plan of retaining structure horizontal displacement and settlement. T he results showed that the cumulative horizontal displacement of pile top is 6. 7 mm and the cumulative pile settlement is 6. 6 mm,which meets the stability and safety requirements of foundation pit.