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

IF 1.5 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Advances in Civil Engineering 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

Abstract

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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深厚软土地区基坑支护选择与设计问题分析

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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来源期刊

Advances in Civil Engineering Engineering-Civil and Structural Engineering

CiteScore

4.00

自引率

5.60%

发文量

612

审稿时长

15 weeks

期刊介绍： Advances in Civil Engineering publishes papers in all areas of civil engineering. The journal welcomes submissions across a range of disciplines, and publishes both theoretical and practical studies. Contributions from academia and from industry are equally encouraged. Subject areas include (but are by no means limited to): -Structural mechanics and engineering- Structural design and construction management- Structural analysis and computational mechanics- Construction technology and implementation- Construction materials design and engineering- Highway and transport engineering- Bridge and tunnel engineering- Municipal and urban engineering- Coastal, harbour and offshore engineering-- Geotechnical and earthquake engineering Engineering for water, waste, energy, and environmental applications- Hydraulic engineering and fluid mechanics- Surveying, monitoring, and control systems in construction- Health and safety in a civil engineering setting. Advances in Civil Engineering also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.