(中建八局第二建设有限公司设计研究院， 济南 250014)

［摘要］以某跨海钢结构拱桥项目为例，对海边建筑深基坑采用有限元软件MIDAS GTS和理正深基坑支护结构设计软件进行整体建模分析。结果表明：对于中心位置为近似圆形、周边组合不规则多边形的深基坑，可采用仅在圆形与不规则多边形交界位置设置内支撑的支护形式，使中心区域形成封闭的近似圆形空间，从而取得良好的支护效果及经济效益。

［关键词］深基坑； 支护结构； 拱桥； 内支撑

中图分类号：TU551-4文献标识码：A文章编号：1002-848X(2020)23-0134-04

Discussion on the deep foundation pit support scheme of a seaside building

WANG Yanzhao, LIANG Ruming, QIN Chunhui, WANG Lei

(Design and Research Institute of the Second Construction Co., Ltd., China Construction Eighth Bureau, Jinan 250014, China)

Abstract:Taking a cross-sea steel arch bridge project as an example, the finite element software MIDAS GTS and the Lizheng deep foundation pit supporting structure design software were used to perform overall modeling analysis for the deep foundation pit of a seaside building. The results show that: for deep foundation pits whose center is approximately circular and the periphery combined with irregular polygons, a support form that only sets internal supports at the junction of the circular and irregular polygons can be used to make the central area form a closed approximate circle space, so as to achieve good supporting effects and economic benefits.

Keywords:deep foundation pit; supporting structure; arch bridge; internal support

作者简介：王延昭，硕士，工程师，Email: 578867595@qq.com。