深厚软土地区基坑支护选择与设计问题分析

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-17 DOI:10.1155/2024/2779898

Mengmeng Zang, Quan Peng, Cuiying Wang

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引用次数: 0

摘要

本研究旨在解决软土地区基坑支护系统设计中遇到的难题，包括计算方法模糊、参数代表性不足以及设计工程师经验有限。为了解决这些问题，我们全面回顾了成功和失败的案例研究，发现实际工作条件对土压和水压的计算方法以及代表性强度值的选择有很大影响。此外，我们还发现，目前有关抗上浮和整体稳定性等因素的计算方法与实际应用之间存在差异。在计算滑动扭矩和抗滑力矩等力时，选择使用饱和重力还是浮力重力会产生重大影响。此外，我们还观察到，在基坑边缘荷载较高的情况下（如 20 kPa），悬臂桩的最大弯矩会显著增加，因此有必要对这些荷载进行严格限制。因此，在设计软土地区的基坑支护系统时，必须考虑实际的现场条件和以往项目的经验教训。通过选择适当的计算方法和参数，我们可以确保这些关键结构的准确性和安全性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of Foundation Pit Support Selection and Design Problems in Deep Soft Soil Area

The aim of this study is to address challenges encountered in the design of foundation pit support systems for soft soil areas, which include vague calculation methodologies, insufficiently representative parameters, and limited design engineer experience. To address these issues, we conducted a comprehensive review of successful and failed case studies and observed that actual working conditions significantly impact the calculation method of soil and water pressures as well as the selection of representative strength values. Furthermore, we found discrepancies between the current calculation methods for factors such as antiuplift and overall stability and practical applications. When calculating forces like sliding torque and antisliding moment, the choice between using saturated or buoyant gravity can have significant implications. Additionally, we observed that under high pit edge loads, such as 20 kPa, the maximum bending moment in cantilever piles can significantly increase, necessitating stringent limits on these loads. Therefore, in designing foundation pit support systems for soft soil areas, it is essential to consider practical site conditions and lessons learned from previous projects. By selecting appropriate calculation methods and parameters, we can ensure the accuracy and safety of these critical structures.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.