CN-121992945-A - Secondary grouting construction device and construction method for top truss column foot of reverse construction method supporting column

Abstract

The invention discloses a secondary grouting construction device and method for a truss column foot at the top of a reverse construction method support column, and belongs to the technical field of building construction. The construction device comprises a steel plate hoop assembly formed by assembling 2L-shaped steel plates with bolt connecting lugs and mounting bolts and a grouting funnel made of the steel plate, wherein the steel plate hoop assembly is detachably fixed at the top of a steel column through the mounting bolts, and the grouting funnel is adapted to grouting holes of a truss column bottom plate. The construction method comprises the steps of assembling and fixing L-shaped steel plates to form a grouting baffle, pouring grouting material into gaps between the steel columns and the truss column bottom plates through a funnel, and disassembling and cleaning the assembly for recycling after the grouting material reaches the design strength. The invention does not need to set up a scaffold, has convenient assembly and disassembly, can be repeatedly used, greatly improves the construction efficiency compared with the traditional wood pattern mode, reduces the comprehensive cost, has stable grouting quality and strong universality, meets the requirement of green construction, and is suitable for secondary grouting construction of the top-down roof truss.

Inventors

• ZHOU GUIXU
• CHEN WENJIN
• ZHU CHAOWEI
• PAN XIAOYU

Assignees

• 中冶(上海)钢结构科技有限公司

Dates

Publication Date

20260508

Application Date

20260116

Claims (6)

1. 1. The secondary grouting construction device for the truss column foot at the top of the reverse construction method supporting column is characterized by comprising a steel plate hoop assembly and a grouting funnel; The steel plate hoop assembly is formed by assembling 2L-shaped steel plates and mounting bolts, two ends of each L-shaped steel plate are bent to form bolt connecting lugs, and bolt connecting holes are formed in the bolt connecting lugs; the installation bolts penetrate through the bolt connection holes and are used for fastening and connecting the 2L-shaped steel plates, so that the square frame structure can be detachably fixed on the periphery of the top of the steel column; The grouting funnel is used for being detachably arranged at a grouting hole of the truss column bottom plate, so that grouting materials can be poured into gaps between the steel column top and the truss column bottom plate.
2. 2. The secondary grouting construction device for the top truss column foot of the reverse construction method supporting column according to claim 1, wherein the thickness of the L-shaped steel plate is 5.5-6.5 mm.
3. 3. The reverse construction method support column top truss column foot secondary grouting construction device according to claim 1, wherein the bolt connection hole is a kidney-shaped through hole.
4. 4. The reverse construction method support column top truss column foot secondary grouting construction device according to claim 1, wherein the grouting funnel is made of steel plates, and the size of the lower opening of the grouting funnel is matched with the size of the grouting hole of the truss column bottom plate.
5. 5. The secondary grouting construction device for the top truss column foot of the reverse construction method supporting column according to claim 1, wherein two ends of each L-shaped steel plate are bent 45 degrees to form the bolt connection lugs, and after the 2L-shaped steel plates are butted, the bolt connection lugs are in one-to-one fit.
6. 6. A secondary grouting construction method for a top truss column foot of a reverse construction method support column, which is characterized in that the secondary grouting construction device for the top truss column foot of the reverse construction method support column according to any one of claims 1-5 is adopted, and the construction method comprises the following steps: step 1, butt-jointing and assembling 2L-shaped steel plates into a square frame structure through bolt connecting lugs, penetrating and fastening bolt connecting holes through mounting bolts, and enabling the square frame structure to be detachably fixed on the periphery of the top of a steel column to form a grouting material baffle closely attached to the periphery of the steel column; step 2, arranging a grouting hole on the truss column bottom plate, detachably installing a grouting funnel at the grouting hole, and grouting slurry into a gap between the steel column top and the truss column bottom plate through the grouting funnel until the gap is completely filled with the grouting slurry; And 3, loosening the mounting bolts after the grouting material is solidified to reach the design strength, and disassembling the L-shaped steel plate and the grouting funnel to clean the residual grouting material on the surface of the assembly and then use the assembly for secondary grouting construction of the subsequent steel column.

Description

Secondary grouting construction device and construction method for top truss column foot of reverse construction method supporting column Technical Field The invention relates to the technical field of building construction, in particular to a secondary grouting construction device and method for a truss column foot at the top of a reverse construction method supporting column. Background When the roof truss of the factory building structure adopts the reverse construction method, the steel column is firstly constructed, and the floor slab is constructed after the roof truss construction is completed. Before the roof truss is constructed, grouting in the steel column is required to be completed, concrete is wrapped on the upper portion of the steel column, and construction is started after the roof truss construction is completed. When the roof truss structure is installed, secondary grouting is needed to be conducted on gaps between the tops of the steel columns and the bottom plates of the truss columns, the bottom plates of the truss columns are larger than the section of the steel columns of the main structure, a wood form is used as a grouting material template for traditional grouting, scaffold supports are needed to be additionally arranged below the template in the method, construction efficiency is low, and consumption is high. Disclosure of Invention Aiming at the problems, the invention discloses a secondary grouting construction device and method for a top truss column foot of a reverse construction method support column, which are used for solving the technical defects of low construction efficiency and high cost of the prior art that the top truss column foot secondary grouting construction of the reverse construction method support column adopts a wood pattern and a scaffold support. The secondary grouting construction device for the truss column foot at the top of the reverse construction method supporting column comprises a steel plate anchor ear assembly and a grouting funnel; The steel plate hoop assembly is formed by assembling 2L-shaped steel plates and mounting bolts, two ends of each L-shaped steel plate are bent to form bolt connecting lugs, and bolt connecting holes are formed in the bolt connecting lugs; the installation bolts penetrate through the bolt connection holes and are used for fastening and connecting the 2L-shaped steel plates, so that the square frame structure can be detachably fixed on the periphery of the top of the steel column; The grouting funnel is used for being detachably arranged at a grouting hole of the truss column bottom plate, so that grouting materials can be poured into gaps between the steel column top and the truss column bottom plate. Preferably, the thickness of the L-shaped steel plate is 5.5-6.5 mm. Preferably, the bolt connection hole is a kidney-shaped through hole. Preferably, the grouting funnel is made of steel plates, and the size of the lower opening of the grouting funnel is matched with the size of the grouting hole of the truss column bottom plate. Preferably, both ends of each L-shaped steel plate are bent for 45 degrees to form the bolt connection lugs, and after the 2L-shaped steel plates are butted, the bolt connection lugs are correspondingly attached one by one. In addition, the invention also discloses a secondary grouting construction method for the truss column foot at the top of the reverse construction method support column, which adopts the secondary grouting construction device for the truss column foot at the top of the reverse construction method support column, and the construction method comprises the following steps: step 1, butt-jointing and assembling 2L-shaped steel plates into a square frame structure through bolt connecting lugs, penetrating and fastening bolt connecting holes through mounting bolts, and enabling the square frame structure to be detachably fixed on the periphery of the top of a steel column to form a grouting material baffle closely attached to the periphery of the steel column; step 2, arranging a grouting hole on the truss column bottom plate, detachably installing a grouting funnel at the grouting hole, and grouting slurry into a gap between the steel column top and the truss column bottom plate through the grouting funnel until the gap is completely filled with the grouting slurry; And 3, loosening the mounting bolts after the grouting material is solidified to reach the design strength, and disassembling the L-shaped steel plate and the grouting funnel to clean the residual grouting material on the surface of the assembly and then use the assembly for secondary grouting construction of the subsequent steel column. Compared with the prior art, the invention has at least one of the following advantages or beneficial effects: 1) The grouting baffle is formed by assembling the steel plate hoop components, is directly detachably fixed on the top of the steel column, and does not need to set up and