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Pile foundation structure penetrating through existing open caisson in middle and construction method of pile foundation structure
The pile foundation structure comprises the existing open caisson, a well hole is formed in the existing open caisson, the pile foundation structure further comprises a middle-penetrating open caisson pile foundation, an open caisson outer side pile foundation and a bearing platform, the middle-penetrating open caisson pile foundation penetrates through the well hole, and a gap is formed between the middle-penetrating open caisson pile foundation and the inner wall of the well hole; the top surface elevation of the center-penetrating open caisson pile foundation is higher than that of the existing open caisson; the open caisson outer side pile foundation is arranged outside the side wall of the existing open caisson in a surrounding mode, and the top face elevation of the open caisson outer side pile foundation is higher than that of the existing open caisson. The bearing platform is arranged between the top face of the center-penetrating open caisson pile foundation and the top face of the open caisson outer side pile foundation. According to the method, the problem that the existing open caisson foundation hinders the foundation arrangement of the newly-built bridge in the demolition, reconstruction and extension work of the old bridge is solved, the hole span arrangement and the pier arrangement position of the newly-built bridge are not restrained by the old bridge, the existing open caisson foundation does not need to be chiseled away, the engineering demolition cost can be effectively reduced, and the construction period is shortened.
本申请涉及一种中穿既有沉井的桩基础结构及其施工方法，包括既有沉井，既有沉井上设置有井孔，桩基础结构还包括：中穿沉井桩基、沉井外侧桩基和承台，中穿沉井桩基穿透井孔，且中穿沉井桩基与井孔内壁之间有空隙，中穿沉井桩基顶面高程高于既有沉井顶面高程；沉井外侧桩基环绕设置于既有沉井侧壁外，沉井外侧桩基顶面高程高于既有沉井顶面高程；承台设置于中穿沉井桩基顶面和沉井外侧桩基顶面之间。本发明中解决了老旧桥梁拆除改扩建工作中既有沉井基础对新建桥梁基础布置的阻碍问题，新建桥梁的孔跨布置及布墩位置将不受老桥约束，且无需凿除既有沉井基础，可有效降低工程拆除成本，节约工期。
Pile foundation structure penetrating through existing open caisson in middle and construction method of pile foundation structure
The pile foundation structure comprises the existing open caisson, a well hole is formed in the existing open caisson, the pile foundation structure further comprises a middle-penetrating open caisson pile foundation, an open caisson outer side pile foundation and a bearing platform, the middle-penetrating open caisson pile foundation penetrates through the well hole, and a gap is formed between the middle-penetrating open caisson pile foundation and the inner wall of the well hole; the top surface elevation of the center-penetrating open caisson pile foundation is higher than that of the existing open caisson; the open caisson outer side pile foundation is arranged outside the side wall of the existing open caisson in a surrounding mode, and the top face elevation of the open caisson outer side pile foundation is higher than that of the existing open caisson. The bearing platform is arranged between the top face of the center-penetrating open caisson pile foundation and the top face of the open caisson outer side pile foundation. According to the method, the problem that the existing open caisson foundation hinders the foundation arrangement of the newly-built bridge in the demolition, reconstruction and extension work of the old bridge is solved, the hole span arrangement and the pier arrangement position of the newly-built bridge are not restrained by the old bridge, the existing open caisson foundation does not need to be chiseled away, the engineering demolition cost can be effectively reduced, and the construction period is shortened.
本申请涉及一种中穿既有沉井的桩基础结构及其施工方法，包括既有沉井，既有沉井上设置有井孔，桩基础结构还包括：中穿沉井桩基、沉井外侧桩基和承台，中穿沉井桩基穿透井孔，且中穿沉井桩基与井孔内壁之间有空隙，中穿沉井桩基顶面高程高于既有沉井顶面高程；沉井外侧桩基环绕设置于既有沉井侧壁外，沉井外侧桩基顶面高程高于既有沉井顶面高程；承台设置于中穿沉井桩基顶面和沉井外侧桩基顶面之间。本发明中解决了老旧桥梁拆除改扩建工作中既有沉井基础对新建桥梁基础布置的阻碍问题，新建桥梁的孔跨布置及布墩位置将不受老桥约束，且无需凿除既有沉井基础，可有效降低工程拆除成本，节约工期。
Pile foundation structure penetrating through existing open caisson in middle and construction method of pile foundation structure
一种中穿既有沉井的桩基础结构及其施工方法
FU ZHANGONG (author) / ZHANG JING (author) / LI SHAOJUN (author) / ZHOU CHANGDONG (author) / WANG BIBO (author) / DAI MINGJING (author) / GAO RUNKUN (author) / DONG YU (author) / LI QI (author) / ZHOU YINDONG (author)
2024-06-14
Patent
Electronic Resource
Chinese
Pile foundation structure utilizing existing open caisson
| European Patent Office | 2024
| European Patent Office | 2020