Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hollow slab girder bridge reinforcing system based on prestress FRP grid and construction method
The invention discloses a hollow slab girder bridge reinforcing system based on a prestressed fiber reinforced composite material FRP grid and a construction method.The reinforcing system comprises the FRP grid, a counter-force plate, a jack, a supporting plate, U-shaped ribs and geopolymer mortar, an anchor plate is anchored to the tensioning end of the FRP grid, a groove for clamping the anchor plate is formed in the middle of the supporting plate, and the counter-force plate is arranged in the groove; tensioning screws are inserted into the two sides of the counter-force plate, the supporting plate and the anchor plate in a penetrating mode. The construction method comprises the following steps: (1) cleaning the bottom surface of the hollow slab beam to be reinforced; (2) assembling a pre-tightening device; (3) fixing the supporting plate; (4) installing a pre-tightening device and fixing the FRP grid; (5) mounting a counter-force plate and a jack, and tensioning the FRP grid; (6) disassembling the jack and the counter-force plate; (7) penetrating through the meshes of the FRP grids and upwards implanting U-shaped ribs crossing hinge joints; and (8) geopolymer mortar is sprayed on the surface of the FRP grid. According to the method, efficient tensioning of the FRP grid is achieved, the hollow slab girder bridge is rapidly repaired, and normal use and long-term durability are guaranteed.
本发明公开了一种基于预应力纤维增强复合材料FRP网格的空心板梁桥加固系统及施工方法，加固系统包括FRP网格、反力板、千斤顶、托板、U形筋和地聚物砂浆，FRP网格的张拉端锚固有锚板，托板的中部开设有将锚板卡入的凹槽，反力板、托板和锚板两侧穿插有张拉螺杆；施工方法为：(1)清理待加固空心板梁底面；(2)组装预紧装置；(3)固定托板；(4)安装预紧装置并固定FRP网格；(5)安装反力板和千斤顶，张拉FRP网格；(6)拆卸千斤顶和反力板；(7)穿过FRP网格网孔向上植入跨铰缝的U形筋；(8)在FRP网格表面喷涂地聚物砂浆。本发明实现对FRP网格的高效张拉，快速修复空心板梁桥，保障正常使用与长期耐久性。
Hollow slab girder bridge reinforcing system based on prestress FRP grid and construction method
The invention discloses a hollow slab girder bridge reinforcing system based on a prestressed fiber reinforced composite material FRP grid and a construction method.The reinforcing system comprises the FRP grid, a counter-force plate, a jack, a supporting plate, U-shaped ribs and geopolymer mortar, an anchor plate is anchored to the tensioning end of the FRP grid, a groove for clamping the anchor plate is formed in the middle of the supporting plate, and the counter-force plate is arranged in the groove; tensioning screws are inserted into the two sides of the counter-force plate, the supporting plate and the anchor plate in a penetrating mode. The construction method comprises the following steps: (1) cleaning the bottom surface of the hollow slab beam to be reinforced; (2) assembling a pre-tightening device; (3) fixing the supporting plate; (4) installing a pre-tightening device and fixing the FRP grid; (5) mounting a counter-force plate and a jack, and tensioning the FRP grid; (6) disassembling the jack and the counter-force plate; (7) penetrating through the meshes of the FRP grids and upwards implanting U-shaped ribs crossing hinge joints; and (8) geopolymer mortar is sprayed on the surface of the FRP grid. According to the method, efficient tensioning of the FRP grid is achieved, the hollow slab girder bridge is rapidly repaired, and normal use and long-term durability are guaranteed.
本发明公开了一种基于预应力纤维增强复合材料FRP网格的空心板梁桥加固系统及施工方法，加固系统包括FRP网格、反力板、千斤顶、托板、U形筋和地聚物砂浆，FRP网格的张拉端锚固有锚板，托板的中部开设有将锚板卡入的凹槽，反力板、托板和锚板两侧穿插有张拉螺杆；施工方法为：(1)清理待加固空心板梁底面；(2)组装预紧装置；(3)固定托板；(4)安装预紧装置并固定FRP网格；(5)安装反力板和千斤顶，张拉FRP网格；(6)拆卸千斤顶和反力板；(7)穿过FRP网格网孔向上植入跨铰缝的U形筋；(8)在FRP网格表面喷涂地聚物砂浆。本发明实现对FRP网格的高效张拉，快速修复空心板梁桥，保障正常使用与长期耐久性。
Hollow slab girder bridge reinforcing system based on prestress FRP grid and construction method
基于预应力FRP网格的空心板梁桥加固系统及施工方法
SHI JIAWEI (Autor:in) / TONG RUOYU (Autor:in) / WU SHANXIA (Autor:in) / LI WENYAO (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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