A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Basement bottom plate anti-floating anchoring structure and anti-floating anchoring construction method
The invention relates to a basement bottom plate anti-floating anchoring structure and an anti-floating anchoring construction method. In the construction process, a grouting body is installed in a foundation; then a force bearing pier is installed above the grouting body; thirdly, prestressed tendons are connected between a first anchorage device and a second anchorage device, and the prestressedtendons are tensioned, so that the prestressed tendons keep preset tensioning force; and finally, a bottom plate layer is laid on the force bearing pier, connecting ribs are buried in the bottom plate layer, and therefore construction operation of the basement bottom plate anti-floating anchoring structure is completed. Due to the fact that the prestressed tendons have certain tensioning force inadvance, the grouting body becomes a prestressed axis tension member, and when the bottom plate layer is subjected to the action of water buoyancy, the buoyancy on the bottom plate layer is transmitted to the force bearing pier through the connecting tendons; and then the buoyancy is transferred to the grouting body by the force bearing pier, so that the grouting body is subjected to an upward pulling force to balance part or all of the internal pressure, and the grouting body does not crack under the condition of normal use.
本发明涉及一种地下室底板抗浮锚固构造及抗浮锚固施工方法，在施工过程中，将注浆体安装在地基内；再将承力墩安装在注浆体上方；接着，将预应力筋连接在第一锚具与第二锚具之间，并对预应力筋进行张拉，使得预应力筋保持预设张拉力；最后，在承力墩上方铺设底板层，使得连接筋埋在底板层内，从而完成地下室底板抗浮锚固构造的施工作业。由于预应力筋预先具有一定的张拉力，因此，注浆体则成为预应力的轴心受拉构件，当底板层受水浮力作用时，底板层上的浮力通过连接筋传递至承力墩上；再由承力墩传递至注浆体上，使得注浆体受向上拔力，以平衡一部分或者全部的内压力，使注浆体在正常使用的情况下不产生裂缝。
Basement bottom plate anti-floating anchoring structure and anti-floating anchoring construction method
The invention relates to a basement bottom plate anti-floating anchoring structure and an anti-floating anchoring construction method. In the construction process, a grouting body is installed in a foundation; then a force bearing pier is installed above the grouting body; thirdly, prestressed tendons are connected between a first anchorage device and a second anchorage device, and the prestressedtendons are tensioned, so that the prestressed tendons keep preset tensioning force; and finally, a bottom plate layer is laid on the force bearing pier, connecting ribs are buried in the bottom plate layer, and therefore construction operation of the basement bottom plate anti-floating anchoring structure is completed. Due to the fact that the prestressed tendons have certain tensioning force inadvance, the grouting body becomes a prestressed axis tension member, and when the bottom plate layer is subjected to the action of water buoyancy, the buoyancy on the bottom plate layer is transmitted to the force bearing pier through the connecting tendons; and then the buoyancy is transferred to the grouting body by the force bearing pier, so that the grouting body is subjected to an upward pulling force to balance part or all of the internal pressure, and the grouting body does not crack under the condition of normal use.
本发明涉及一种地下室底板抗浮锚固构造及抗浮锚固施工方法，在施工过程中，将注浆体安装在地基内；再将承力墩安装在注浆体上方；接着，将预应力筋连接在第一锚具与第二锚具之间，并对预应力筋进行张拉，使得预应力筋保持预设张拉力；最后，在承力墩上方铺设底板层，使得连接筋埋在底板层内，从而完成地下室底板抗浮锚固构造的施工作业。由于预应力筋预先具有一定的张拉力，因此，注浆体则成为预应力的轴心受拉构件，当底板层受水浮力作用时，底板层上的浮力通过连接筋传递至承力墩上；再由承力墩传递至注浆体上，使得注浆体受向上拔力，以平衡一部分或者全部的内压力，使注浆体在正常使用的情况下不产生裂缝。
Basement bottom plate anti-floating anchoring structure and anti-floating anchoring construction method
地下室底板抗浮锚固构造及抗浮锚固施工方法
LI WENHUI (author) / LYU PENG (author) / HE JIANLONG (author) / CHENG WEI (author) / CHEN ANJUN (author) / ZHU ZUJING (author) / ZHOU GUOWEI (author)
2020-11-06
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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