| 深基坑坑底加固体的刚度效应研究 |
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| 引用本文： | 蒋建平. 深基坑坑底加固体的刚度效应研究[J]. 工程力学, 2011, 0(6): 130-140 |
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| 作者姓名： | 蒋建平 |
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| 作者单位： | 上海海事大学海洋环境与工程学院; |
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| 基金项目： | 上海海事大学科研基金项目(2009160); 港口、海岸及近海工程校重点学科项目(A2010030); 上海市第4期本科教育高地建设项目(B21008G) |
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| 摘 要： | 基于平面数值模拟方法对坑底加固体的刚度效应进行了探讨.研究发现,随着坑底加固体刚度的增加,整个基坑的地面沉降、坑底隆起、支护桩水平向位移等减小,支护桩正负弯矩趋向对称,且弯矩绝对值基本无增加,整个基坑的整体稳定性安全系数提高,说明坑底加固体刚度的提高能增加基坑的稳定性;当只加固坑底宽度范围的一半时,另一半未加固区的坑底...
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| 关 键 词： | 刚度 加固 深基坑 地面沉降 坑底隆起 弯矩 |
STUDY ON STIFFNESS EFFECT OF REINFORCEMENT MASS IN BOTTOM OF DEEP EXCAVATION |
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| JIANG Jian-ping. STUDY ON STIFFNESS EFFECT OF REINFORCEMENT MASS IN BOTTOM OF DEEP EXCAVATION[J]. Engineering Mechanics, 2011, 0(6): 130-140 |
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| Authors: | JIANG Jian-ping |
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| Affiliation: | JIANG Jian-ping(College of Ocean Environment and Engineering,Shanghai Maritime University,Shanghai 201306,China) |
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| Abstract: | Based on a 2D numerical simulation method,the stiffness effect of reinforcement mass in bottom of deep excavations was studied.It is found that,with the enlargement of stiffness of reinforcement mass,the settlement of ground,the heave of bottom and the horizontal displacement of supporting pile decrease,the positive and negative bending moment tend to be symmetry and the absolute values do not increase the stability safety factor of whole deep excavation due to the increase of the stiffness of reinforcement... |
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| Keywords: | stiffness reinforcement deep excavation ground settlement heave of pit bottom bending moment |
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