一种地铁车站与桥梁协同承载的桩基承台复合结构

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By adopting a composite structure of pile foundation and cap with synergistic load-bearing between subway stations and bridges, the pile foundation problem caused by load differences in traditional design was solved, achieving balanced load distribution and improved structural stability, while optimizing the performance of the soil between piles and construction efficiency.

CN224514264UActive Publication Date: 2026-07-17ZHEJIANG CENT SOUTH CONSTR GROUP

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: ZHEJIANG CENT SOUTH CONSTR GROUP
Filing Date: 2025-07-09
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Traditional subway station and bridge pile foundation designs lack a coordinated stress-bearing mechanism, leading to load differences that cause redundancy or insufficiency in pile foundation bearing capacity, making the structure prone to cracking. Furthermore, the structure has weak resistance to overturning under horizontal loads, resulting in serious material waste. The methods for improving the soil between piles are limited, and no effective stress release and deformation coordination mechanism has been established.

Method used

The project adopts a composite structure of pile foundation and cap that supports the subway station and bridge. Through the symmetrical zoning design of the station pile group and the bridge pile group, a rigid-flexible combination system is formed by combining large-diameter rock-socketed piles, friction piles and cement mixing piles. The middle cement mixing piles serve as stress release zones and testing channels, while the inner cement mixing piles form pressure relief zones and seepage channels, forming an overall anti-sliding system.

Benefits of technology

It achieves a balanced distribution of loads between subway stations and bridges, improves the overall stability and settlement resistance of the structure, reduces material waste, optimizes the properties of the soil between piles, and provides convenience for construction and testing.

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Abstract

本实用新型提供一种地铁车站与桥梁协同承载的桩基承台复合结构，涉及建筑技术领域，包括基坑，基坑的内侧设置有承台，承台的上侧设置有基础桩群，基础桩群包括车站桩群以及对称设置在车站桩群两侧的桥梁桩群，车站桩群和桥梁桩群都包括后排钻孔浇筑桩、中间水泥搅拌桩和前排钻孔浇筑桩，中间水泥搅拌桩位于后排钻孔浇筑桩和前排钻孔浇筑桩之间，前排钻孔浇筑桩的内侧还设置有内侧水泥搅拌桩。本实用新型实现地铁车站主体结构与桥梁墩台荷载的协同承载，显著提升复合结构整体稳定性，构建了水平约束系统，中间水泥搅拌桩空隙作为桩间土应力释放区，兼具检测管线布设通道功能，减少二次开凿工序。

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Claims

1. A composite structure of pile foundation and bridge bearing in which subway stations and bridges work together to support loads, characterized in that: The foundation includes a pit (1), and a pile cap (2) is provided on the inner side of the pit (1). A foundation pile group (3) is provided on the upper side of the pile cap (2). The foundation pile group (3) includes a station pile group (31) and a bridge pile group (32) symmetrically arranged on both sides of the station pile group (31). The station pile group (31) and the bridge pile group (32) both include an outer row of bored cast-in-place piles (301), an intermediate cement mixing pile (302) and an inner row of bored cast-in-place piles (303). The intermediate cement mixing pile (302) is located between the outer row of bored cast-in-place piles (301) and the inner row of bored cast-in-place piles (303). An inner cement mixing pile (304) is provided on the inner side of the inner row of bored cast-in-place piles (303).

2. The pile cap composite structure of the subway station and the bridge collaborative bearing according to claim 1, characterized in that: The outer row of bored piles (301) and the inner row of bored piles (303) are both single rows, while the middle cement mixing piles (302) and the inner side cement mixing piles (304) are both provided in four rows.

3. The pile cap composite structure of the subway station and the bridge collaborative bearing according to claim 2, characterized in that: The spacing between the outer row of bored piles (301) is greater than the spacing between the inner row of bored piles (303).

4. The pile cap composite structure of the subway station and the bridge collaborative bearing according to claim 2, characterized in that: The middle two rows of the intermediate cement mixing pile (302) are provided with gaps (305) on the inner side, and the inner two rows of the inner cement mixing pile (304) are provided with partition grooves (306).

5. The pile cap composite structure of the subway station and the bridge collaborative bearing according to claim 4, characterized in that: The gaps (305) are separated by four intermediate cement mixing piles (302), and the width of the partition (306) is the diameter of the two inner cement mixing piles (304).

6. The pile cap composite structure of the subway station and the bridge collaborative bearing according to claim 1, characterized in that: The height of the intermediate cement mixing pile (302) of the bridge pile group (32) is equal to the height of the inner cement mixing pile (304) of the bridge pile group (32) and equal to the height of the intermediate cement mixing pile (302) of the station pile group (31).

7. The pile cap composite structure of the subway station and the bridge collaborative bearing according to claim 1, characterized in that: The height of the middle cement mixing pile (302) of the station pile group (31) is higher than the height of the inner cement mixing pile (304) of the station pile group (31).