The load-bearing characteristics and optimization design of bridge pile foundations in soft ground conditions
桥梁桩基础在软弱地基中的承载特性与优化设计

摘要

软弱地基条件下桥梁桩基础承载特性复杂，直接影响桥梁工程安全与稳定性。聚焦此问题，深入剖析桩土相互作用机制，明确桩基础承载特性受桩身材料、几何尺寸、土体物理力学性质等多因素制约。针对影响因素，提出优化设计方法，包括合理选择桩型、优化桩长桩径、采用复合地基处理技术等，并阐述施工要点，保障优化设计有效实施。研究成果为软弱地基桥梁桩基础设计施工提供科学依据，对提升工程质量、降低建设成本具有重要意义。

Abstract

The load-bearing characteristics of bridge pile foundations under soft ground conditions are complex, directly impacting the safety and stability of bridge projects. This paper focuses on this issue, delving into the interaction mechanisms between piles and soil, and clarifying that the load-bearing characteristics of pile foundations are influenced by multiple factors, including pile material, geometric dimensions, and the physical and mechanical properties of the soil. To address these influencing factors, the paper proposes optimization design methods, such as selecting appropriate pile types, optimizing pile length and diameter, and employing composite foundation treatment technologies. It also outlines key construction points to ensure the effective implementation of the optimization design. The research findings provide a scientific basis for the design and construction of bridge pile foundations in soft ground conditions, which is crucial for enhancing project quality and reducing construction costs.