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Rock drilling anchor cable and bearing platform combined anti-seismic foundation and construction method thereof
The invention discloses a rock drilling anchor cable and bearing platform combined anti-seismic foundation and a construction method thereof. The anti-seismic foundation comprises a bearing platform for supporting a pier, rock drilling anchor cables and shear-resistant piles, wherein the rock drilling anchor cables are anchored in the bearing platform, lower ends of the rock drilling anchor cables are anchored to a rock stratum, the shear-resistant piles are further arranged near the center of the bottom of the bearing platform, and lower ends of the shear-resistant piles are fixed in a rock stratum; the construction method comprises the following steps of foundation pit excavation, shear pile construction, anchor cable hole channel positioning and drilling, rock drilling anchor cable installation, cushion layer and three-dimensional steel reinforcement framework construction, steel sleeve steel bar connecting piece welding, anchor head positioning, concrete pouring and foundation pit backfilling. The method is advantaged in that the vertical component force of the rock drilling anchor cable can be used for counteracting the bending moment of the base, the horizontal component force can be used for counteracting part of horizontal thrust, the other horizontal thrust is borne by the shear-resistant pile, the horizontal shear-resistant bearing capacity and anti-overturning stability of the foundation can be greatly improved, the foundation pit excavation and concrete masonry amount can be reduced, and the pile foundation is prevented from being pulled.
本发明公开了一种钻岩锚索与承台组合的抗震式基础及其施工方法，其抗震基础包括支撑桥墩的承台、钻岩锚索和抗剪桩，所述承台中锚固有钻岩锚索，钻岩锚索下端锚固于岩层，所述承台底部中心附近还设置有抗剪桩，所述抗剪桩的下端固定在岩层中；其施工方法，包括以下步骤：基坑开挖、抗剪桩施工、锚索孔道定位及钻孔、安装钻岩锚索、施工垫层和立体钢筋骨架、钢套筒焊接钢筋连接件、锚头定位、浇筑混凝土、基坑回填。本发明钻岩锚索的竖向分力可用来抵消基底弯矩，水平向分力可用来抵消部分水平推力，其余水平推力则由抗剪桩承受，可大幅提高基础的水平向抗剪承载力和抗倾覆稳定性，并能减少基坑挖方和混凝土圬工量，避免桩基础受拉。
Rock drilling anchor cable and bearing platform combined anti-seismic foundation and construction method thereof
The invention discloses a rock drilling anchor cable and bearing platform combined anti-seismic foundation and a construction method thereof. The anti-seismic foundation comprises a bearing platform for supporting a pier, rock drilling anchor cables and shear-resistant piles, wherein the rock drilling anchor cables are anchored in the bearing platform, lower ends of the rock drilling anchor cables are anchored to a rock stratum, the shear-resistant piles are further arranged near the center of the bottom of the bearing platform, and lower ends of the shear-resistant piles are fixed in a rock stratum; the construction method comprises the following steps of foundation pit excavation, shear pile construction, anchor cable hole channel positioning and drilling, rock drilling anchor cable installation, cushion layer and three-dimensional steel reinforcement framework construction, steel sleeve steel bar connecting piece welding, anchor head positioning, concrete pouring and foundation pit backfilling. The method is advantaged in that the vertical component force of the rock drilling anchor cable can be used for counteracting the bending moment of the base, the horizontal component force can be used for counteracting part of horizontal thrust, the other horizontal thrust is borne by the shear-resistant pile, the horizontal shear-resistant bearing capacity and anti-overturning stability of the foundation can be greatly improved, the foundation pit excavation and concrete masonry amount can be reduced, and the pile foundation is prevented from being pulled.
本发明公开了一种钻岩锚索与承台组合的抗震式基础及其施工方法，其抗震基础包括支撑桥墩的承台、钻岩锚索和抗剪桩，所述承台中锚固有钻岩锚索，钻岩锚索下端锚固于岩层，所述承台底部中心附近还设置有抗剪桩，所述抗剪桩的下端固定在岩层中；其施工方法，包括以下步骤：基坑开挖、抗剪桩施工、锚索孔道定位及钻孔、安装钻岩锚索、施工垫层和立体钢筋骨架、钢套筒焊接钢筋连接件、锚头定位、浇筑混凝土、基坑回填。本发明钻岩锚索的竖向分力可用来抵消基底弯矩，水平向分力可用来抵消部分水平推力，其余水平推力则由抗剪桩承受，可大幅提高基础的水平向抗剪承载力和抗倾覆稳定性，并能减少基坑挖方和混凝土圬工量，避免桩基础受拉。
Rock drilling anchor cable and bearing platform combined anti-seismic foundation and construction method thereof
一种钻岩锚索与承台组合的抗震式基础及其施工方法
SU WEI (author) / MOU ZHAOXIANG (author) / LI ENLIANG (author) / ZHOU YUEWU (author) / DENG JIANGTAO (author)
2022-02-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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