深基坑时空动态响应特性与围护效果评估

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中图分类号：TU753 文献标志码：A 文章编号：1005-8249（2025）02-0079-06

DOI：10.19860/j.cnki.issn1005-8249.2025.02.014

Abstract：Taking acommercial complex dep excavationin acertain cityastheresearch object，this studyemploys multiple support measures includingsoil-nailing walls，high-pressre jet grouting piles，cement-soil mixing piles，and isolationpiles to investigate the spatiotemporal dynamicresponse characteristicsand support efectivenessof complex deepexcavations.The resultsshowthatthereinforcement methodsachievedsignificant efects：the maximum streses atdistancesof1O，20and 3 0 m from the excavation were reduced to 27.4，24.7 and ，respectively，representing a decrease of over 40 % compared to theunstabilized condition.Themaximum horizontal deformationandvertical setlementvalues decreased bymore than 50 % ： Thereinforcement measures effectivelycontroledsoil stressanddeformation，ensuringsafeandeficientconstructionofthedep excavation project.

Key words： complex buildings；deep foundation pit； spatiotemporal dynamic response；enclosure effect

0 引言

随着城市化进程和建设技术的发展，深基坑工程越来越多。（剩余7091字）