基坑擴(kuò)底承載式斜撐支護(hù)變形數(shù)值模擬研究

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中圖分類(lèi)號(hào)：TU751 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：2096-6717（2025）04-0019-09

Numerical study on deformation of pit tilted strut of concretefilled steel tube with belled bearing base

ZHANG Wengang1，YAN Yumiao1，YUAN Yuntao2，CHEN Chunxia 3 MOU Yunzhen4，LI Yongqin1

（1.School of Civil Engineering，Chongqing University， Chongqing 40o045，P.R.China; 2. Jiangsu Huayan Construction Co.，Ltd.，Suzhou 2l5lOO，Jiangsu，P.R.China;3.China Southwest Geotechnical Investigation& Design Institute Co.， Ltd.， Chengdu 6lO093，P.R.China; 4. Yangtze River Chongqing Navigation Engineering Bureau，Chongqing 40ool0，P.R. China）

Abstract：Botom-bearing steel pipe concrete inclined support technique is a promising method for foundation pit excavation. While its efectivenessis evident in various engineering cases，its underlying mechanismrequires further investigation.This study establishes a numerical modelusing finite element simulation，validated against monitoring data from specific projects. It explores the deformation of the inclined support during excavation， revealing insights into its performanceunderdiferent soil conditions and tilt angles.Findings indicate significant control over soil and support deformation，especially in soft soil areas. Increasing thetilt angle enhances lateral force resistance but raises project costs.Thus，selecting the appropriate angle is crucial based on specific project needs and soil conditions.

Keywords： excavation； finite element; belled bearing base；ground settlement，basal heave

隨著城市地下空間的發(fā)展，深基坑工程的建設(shè)技術(shù)不斷進(jìn)步，其設(shè)計(jì)方法不斷改進(jìn)，施工水平也不斷提高。（剩余13884字）