Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prestress loading type bag-type expansion anchor rod for building anti-floating and construction method of prestress loading type bag-type expansion anchor rod
The pre-stress loading type bag-type expansion anchor rod for building anti-floating comprises an anchor rod body, a bag, an anchoring plate and a spiral stirrup, a bottom plate and a base are arranged in a to-be-anti-floating area of a building, and the base is located below the bottom plate; the device is characterized in that vertical drill holes are formed in the bottom plate, the base and a foundation below the base, and the anchor rods are inserted into the drill holes; a high-pressure jet grouting expansion cavity is formed in the periphery of the lower portion of the anchor rod, the bag is fixed to the portion, located in the high-pressure jet grouting expansion cavity, of the anchor rod, an in-bag cement stone body is poured into the bag, and an out-bag grouting cement body is poured into the portion, on the periphery of the bag, of the high-pressure jet grouting expansion cavity. According to the bag type expansion anchor rod and the construction method, when a building is subjected to upward floating force, part of the upward floating force is counteracted by prestress, the counteracted upward floating force acts on the anchor rod, and due to the existence of the cement stone body in the bag and the grouting cement body outside the bag, the anchor rod can bear large upward floating force, and cracking of a grouting body cannot be caused.
本发明的建筑物抗浮用预应力加载式囊式扩体锚杆，包括锚杆、囊袋、锚固板和螺旋箍筋，建筑物待抗浮区域设置有底板和基底，基底位于底板的下方；其特征在于：底板、基底以及基底下方的地基上开设有竖向的钻孔，锚杆插入钻孔中；锚杆下部的周围设置有高压旋喷扩大腔，囊袋固定于位于高压旋喷扩大腔中的锚杆上，囊袋中浇筑有囊内水泥结石体，囊袋外围的高压旋喷扩大腔中浇筑有囊外注浆水泥体。本发明的囊式扩体锚杆及施工方法，当建筑物受到上浮力时，首先被预应力抵消一部分，抵消后的上浮力作用于锚杆上，由于囊内水泥结石体和囊外注浆水泥体的存在，使得锚杆可承受较大上浮力，而不会导致灌浆体开裂。
Prestress loading type bag-type expansion anchor rod for building anti-floating and construction method of prestress loading type bag-type expansion anchor rod
The pre-stress loading type bag-type expansion anchor rod for building anti-floating comprises an anchor rod body, a bag, an anchoring plate and a spiral stirrup, a bottom plate and a base are arranged in a to-be-anti-floating area of a building, and the base is located below the bottom plate; the device is characterized in that vertical drill holes are formed in the bottom plate, the base and a foundation below the base, and the anchor rods are inserted into the drill holes; a high-pressure jet grouting expansion cavity is formed in the periphery of the lower portion of the anchor rod, the bag is fixed to the portion, located in the high-pressure jet grouting expansion cavity, of the anchor rod, an in-bag cement stone body is poured into the bag, and an out-bag grouting cement body is poured into the portion, on the periphery of the bag, of the high-pressure jet grouting expansion cavity. According to the bag type expansion anchor rod and the construction method, when a building is subjected to upward floating force, part of the upward floating force is counteracted by prestress, the counteracted upward floating force acts on the anchor rod, and due to the existence of the cement stone body in the bag and the grouting cement body outside the bag, the anchor rod can bear large upward floating force, and cracking of a grouting body cannot be caused.
本发明的建筑物抗浮用预应力加载式囊式扩体锚杆，包括锚杆、囊袋、锚固板和螺旋箍筋，建筑物待抗浮区域设置有底板和基底，基底位于底板的下方；其特征在于：底板、基底以及基底下方的地基上开设有竖向的钻孔，锚杆插入钻孔中；锚杆下部的周围设置有高压旋喷扩大腔，囊袋固定于位于高压旋喷扩大腔中的锚杆上，囊袋中浇筑有囊内水泥结石体，囊袋外围的高压旋喷扩大腔中浇筑有囊外注浆水泥体。本发明的囊式扩体锚杆及施工方法，当建筑物受到上浮力时，首先被预应力抵消一部分，抵消后的上浮力作用于锚杆上，由于囊内水泥结石体和囊外注浆水泥体的存在，使得锚杆可承受较大上浮力，而不会导致灌浆体开裂。
Prestress loading type bag-type expansion anchor rod for building anti-floating and construction method of prestress loading type bag-type expansion anchor rod
建筑物抗浮用预应力加载式囊式扩体锚杆及施工方法
CONG YIXIAO (Autor:in) / ZHAO XIYU (Autor:in) / WU XIAOFENG (Autor:in) / ZHAO XUTAO (Autor:in) / QIAO FENG (Autor:in) / CHU JINHAN (Autor:in) / TANG LIANG (Autor:in) / LIU SHICHAO (Autor:in) / LIN YUCHEN (Autor:in) / LI XIN (Autor:in)
16.09.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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