A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rock anchor anchorage composed of prestress group anchors and surrounding rock and construction method thereof
The invention discloses a rock anchor anchorage composed of prestress group anchors and a surrounding rock and a construction method thereof. The rock anchor anchorage comprises an anchor cable surrounding rock and reinforced concrete anchor piers cast in place on a slope excavation platform of the anchor cable surrounding rock. An oblique prestress anchor cable group and a vertical prestress anchor cable group are arranged between the reinforced concrete anchor piers and the anchor cable surrounding rock. Anchoring steel bars are arranged in the reinforced concrete anchorage piers, ends of the anchoring steel bars are connected with steel structure force transmission beams located at front ends of the reinforced concrete anchorage piers, and a main cable tension acts on the rock anchoragethrough the steel structure force transmission beams. In the invention, the tension of the main cable is converted into rock mass pressure and a shearing force through the pre-compression stress state of the anchorage so that a mountain body is driven to provide strong pulling resistance through characteristics of high compressive strength and high shear strength of a rock body; the rock anchor anchorage structure is high in bearing capacity, high in safety, small in rock-soil body excavation amount and low in construction cost; and a brand-new anchorage structure mode is provided for a bridge and civil engineering construction cable hoisting system, and good economic and environment-friendly benefits are achieved.
本发明公开了一种由预应力群锚和围岩组成的岩锚锚碇及其施工方法，包括锚索围岩、现浇于锚索围岩的边坡开挖的平台上的钢筋混凝土锚墩，钢筋混凝土锚墩和锚索围岩之间设有斜向预应力锚索群和竖向预应力锚索群；钢筋混凝土锚墩内设有锚固钢筋，锚固钢筋的端头与位于钢筋混凝土锚墩前端的钢结构传力梁连接，主缆拉力通过钢结构传力梁作用于岩锚锚碇。本发明通过锚碇的预压应力状态将主缆拉力转换为岩体压力和剪力，从而借助于岩体抗压和抗剪强度高的特点带动山体提供强大的抗拔力，本发明岩锚锚碇结构承载能力强、安全性高、岩土体挖方量小、工程造价低，为桥梁、土木工程建设缆索吊装系统提供一种全新的锚碇结构方式，具有良好的经济环保效益。
Rock anchor anchorage composed of prestress group anchors and surrounding rock and construction method thereof
The invention discloses a rock anchor anchorage composed of prestress group anchors and a surrounding rock and a construction method thereof. The rock anchor anchorage comprises an anchor cable surrounding rock and reinforced concrete anchor piers cast in place on a slope excavation platform of the anchor cable surrounding rock. An oblique prestress anchor cable group and a vertical prestress anchor cable group are arranged between the reinforced concrete anchor piers and the anchor cable surrounding rock. Anchoring steel bars are arranged in the reinforced concrete anchorage piers, ends of the anchoring steel bars are connected with steel structure force transmission beams located at front ends of the reinforced concrete anchorage piers, and a main cable tension acts on the rock anchoragethrough the steel structure force transmission beams. In the invention, the tension of the main cable is converted into rock mass pressure and a shearing force through the pre-compression stress state of the anchorage so that a mountain body is driven to provide strong pulling resistance through characteristics of high compressive strength and high shear strength of a rock body; the rock anchor anchorage structure is high in bearing capacity, high in safety, small in rock-soil body excavation amount and low in construction cost; and a brand-new anchorage structure mode is provided for a bridge and civil engineering construction cable hoisting system, and good economic and environment-friendly benefits are achieved.
本发明公开了一种由预应力群锚和围岩组成的岩锚锚碇及其施工方法，包括锚索围岩、现浇于锚索围岩的边坡开挖的平台上的钢筋混凝土锚墩，钢筋混凝土锚墩和锚索围岩之间设有斜向预应力锚索群和竖向预应力锚索群；钢筋混凝土锚墩内设有锚固钢筋，锚固钢筋的端头与位于钢筋混凝土锚墩前端的钢结构传力梁连接，主缆拉力通过钢结构传力梁作用于岩锚锚碇。本发明通过锚碇的预压应力状态将主缆拉力转换为岩体压力和剪力，从而借助于岩体抗压和抗剪强度高的特点带动山体提供强大的抗拔力，本发明岩锚锚碇结构承载能力强、安全性高、岩土体挖方量小、工程造价低，为桥梁、土木工程建设缆索吊装系统提供一种全新的锚碇结构方式，具有良好的经济环保效益。
Rock anchor anchorage composed of prestress group anchors and surrounding rock and construction method thereof
一种由预应力群锚和围岩组成的岩锚锚碇及其施工方法
LIU XIUMIN (author) / CHEN CONGXIN (author) / LIU CAIHUA (author) / XIA KAIZONG (author) / LIU XUANTING (author)
2020-08-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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