| 庄桂成,刘巍.深厚软基条件下差异化桩基方案决策逻辑探讨——以首钢京唐钢铁基地桩基方案为例[J].矿产勘查,2025,16(S2):226-238 |
| 深厚软基条件下差异化桩基方案决策逻辑探讨——以首钢京唐钢铁基地桩基方案为例 |
| Discussion on decision-making logic of differentiated pile foundation strategies under deep soft ground conditions:A case study of the Shougang Jingtang steel base |
| 投稿时间：2025-07-08 |
| DOI：10.20008/j.kckc.2025s2031 |
| 中文关键词: 深厚软基 桩基 差异化设计 决策逻辑 工程实践 |
| 英文关键词: deep soft ground pile foundation differentiated design engineering practice bearing capacity construction methods |
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| 中文摘要: |
| 首钢京唐钢铁厂项目作为中国钢铁产业战略布局调整的关键项目，是破解内陆企业运输成本高昂、环保压力增大等难题，实现产业升级与转移需求的示范工程。项目选址曹妃甸，场地存在平均约 3. 5 m的吹填土层，下伏第四纪沉积淤泥质黏土、粉土及粉砂地层，软基深厚，地质复杂，给工程建设带来严峻挑战。本文以该工程为例，深入探究深厚软基条件下的差异化桩基选择方案。首先系统阐述了深厚软基的定义、分类及其工程特性，揭示其对桩基设计的重大影响，根据建筑物荷载和变形敏感程度，剖析桩基基本类型、承载力理论及施工方法，构建科学的桩基设计依据与决策框架，并提出适应性、经济性和安全性等差异化原则；其次在桩基优化设计方面，针对深厚软基条件，通过参数优化与模型构建，探讨桩基施工技术与质量控制，为工程实践提供理论与技术指导；最后依据监测和检验流程，构建风险监测系统，保障施工安全。本文创新点在于根据初勘资料进行工程地质分区及分类试验，将建筑物荷载—变形敏感等级与软基分层地质参数耦合，建立动态适配的桩基选型量化模型，突破传统经验决策模式。实践表明，深厚软基中采用差异化桩基方案，可有效提升桩基结构性能与经济效益，降低施工风险，为类似工程提供有益借鉴。 |
| 英文摘要: |
| The Shougang Jingtang Iron and Steel Plant Project serves as a key initiative in the strategic adjust. ment of China’s steel industry layout. It stands as a demonstration project aimed at addressing challenges such asexorbitant transportation costs for inland enterprises and mounting environmental pressures，while fulfilling the demands of industrial upgrading and relocation. The project is located in Caofeidian，where the site is character. ized by an average 3. 5-meter-thick hydraulic fill layer，underlain by Quaternary deposits of silty clay，silt，and silty sand. The deep soft foundation and complex geological conditions posed severe challenges to construction.This thesis takes the project as an example to conduct an in-depth exploration of differentiated pile foundation selec. tion schemes under deep soft ground conditions. First，it systematically defines and classifies deep soft ground， outlines its engineering characteristics，and highlights its significant impact on pile foundation design. Based onthe building load and sensitivity to deformation requirements，the article thoroughly analyzes the basic types of pile foundations，theories of bearing capacity，and construction methods，establishing a scientific design basis and decision-making framework for pile foundations. The principles of adaptability，cost-effectiveness，and safety in pile foundation design are proposed to guide differentiation；Second，regarding pile foundation optimization，the study addresses deep soft ground conditions by optimizing design parameters and developing models，while also examining construction techniques and quality control measures to provide both theoretical and technical guidancefor engineering practice；Finally，based on monitoring and inspection procedures，a risk monitoring system isestablished to ensure construction safety. The main innovation of this study lies in conducting geotechnical zoningand classification tests from preliminary site investigations，and in coupling building load–deformation sensitivitylevels with stratified geotechnical parameters to develop a dynamically adaptive quantitative model for pile founda.tion selection，thereby moving beyond the traditional experience-based decision-making approach. The findingsdemonstrate that adopting differentiated pile foundation schemes under deep soft ground conditions can effectivelyenhance structural performance and economic benefits，mitigate construction risks，and provide valuable refer. ences for similar projects. |
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