A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction technology for large-section deep foundation pit fender post and pre-stressed anchor cable supporting
The invention discloses a construction technology for large-section deep foundation pit fender post and pre-stressed anchor cable supporting in the technical field of large-section deep foundation pitconstruction such as housing construction and subway stations. Pre-stressed anchor cables are implemented between fender posts; double rows of transverse I-steel are arranged at the inner sides of the fender posts; the pre-stressed anchor cables are anchored on the double rows of transverse I-steel; and prestressing force is applied to the I-steel. The stability of the foundation pit slope can beensured with no need for setting inner supports in the foundation bit. After the construction of the pre-stressed anchor cables is completed in the deep foundation pit fender posts and pile head crown beams, anchor cable holes are formed in the foundation pit and unbonded pre-stressed steel beams are inserted in the foundation pit according to the excavation depth of the foundation pit and the design requirements; mortar intrusion is performed on pore channels; after the mortar intrusion strength of the pore channels reaches the design and specification requirements, double rows of I-steel and anchor bearing plates are installed; pre-stressed tensioning and anchoring are performed; the construction technology has simple process flow and high construction efficiency, and is convenient to operate; the need for vertical stand columns and horizontal supports is eliminated in the foundation bit; temporary structures do not need to be dismantled; and the time is saved.
本发明公开了房建、地铁车站等大断面深基坑施工技术领域的一种大断面深基坑围护桩及预应力锚索支护施工技术，通过围护桩桩间实施预应力锚索，在围护桩内侧安装双排横向工字钢，预应力锚索锚固在双排横向工字钢上，在工字钢上施加预应力。无需设置基坑内支撑，可保证基坑边坡稳定。预应力锚索在深基坑围护桩及桩顶冠梁施工完成后，随基坑开挖深度，按设计要求，在基坑内打设锚索孔、插入无粘结预应力钢束，对孔道压浆，待孔道压浆强度达到设计及规范要求后，安装双排工字钢及锚垫板，进行预应力张拉及锚固，工艺流程简单，便于操作，施工效率高；基坑内无需竖向立柱及水平支撑，不需要拆除临时结构，节省时间。
Construction technology for large-section deep foundation pit fender post and pre-stressed anchor cable supporting
The invention discloses a construction technology for large-section deep foundation pit fender post and pre-stressed anchor cable supporting in the technical field of large-section deep foundation pitconstruction such as housing construction and subway stations. Pre-stressed anchor cables are implemented between fender posts; double rows of transverse I-steel are arranged at the inner sides of the fender posts; the pre-stressed anchor cables are anchored on the double rows of transverse I-steel; and prestressing force is applied to the I-steel. The stability of the foundation pit slope can beensured with no need for setting inner supports in the foundation bit. After the construction of the pre-stressed anchor cables is completed in the deep foundation pit fender posts and pile head crown beams, anchor cable holes are formed in the foundation pit and unbonded pre-stressed steel beams are inserted in the foundation pit according to the excavation depth of the foundation pit and the design requirements; mortar intrusion is performed on pore channels; after the mortar intrusion strength of the pore channels reaches the design and specification requirements, double rows of I-steel and anchor bearing plates are installed; pre-stressed tensioning and anchoring are performed; the construction technology has simple process flow and high construction efficiency, and is convenient to operate; the need for vertical stand columns and horizontal supports is eliminated in the foundation bit; temporary structures do not need to be dismantled; and the time is saved.
本发明公开了房建、地铁车站等大断面深基坑施工技术领域的一种大断面深基坑围护桩及预应力锚索支护施工技术，通过围护桩桩间实施预应力锚索，在围护桩内侧安装双排横向工字钢，预应力锚索锚固在双排横向工字钢上，在工字钢上施加预应力。无需设置基坑内支撑，可保证基坑边坡稳定。预应力锚索在深基坑围护桩及桩顶冠梁施工完成后，随基坑开挖深度，按设计要求，在基坑内打设锚索孔、插入无粘结预应力钢束，对孔道压浆，待孔道压浆强度达到设计及规范要求后，安装双排工字钢及锚垫板，进行预应力张拉及锚固，工艺流程简单，便于操作，施工效率高；基坑内无需竖向立柱及水平支撑，不需要拆除临时结构，节省时间。
Construction technology for large-section deep foundation pit fender post and pre-stressed anchor cable supporting
一种大断面深基坑围护桩及预应力锚索支护施工技术
WANG YIDONG (author) / LIU JUNNI (author) / WANG PIGANG (author)
2020-10-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2023
| European Patent Office | 2023
| European Patent Office | 2023