Reinforced concrete prefabricated column positioning device and construction method thereof
A technology of reinforced concrete and positioning device, applied in the directions of columns, piers, pillars, etc., can solve the problems of difficult lower end swinging, poor operating environment, long construction period, etc. simple effect
Inactive Publication Date: 2012-01-04
GUANGDONG FOUND ENG GRP CO LTD
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Problems solved by technology
However, the method of cast-in-place reinforced concrete columns has the defects of complicated procedures, long construction period, high cost of funds, poor operating environment, and great danger to construction personnel. Therefore, reinforced concrete prefabricated columns are used to replace cast-in-place reinforced concrete columns. Concrete prefabricated columns are prefabricated in the factory and produced in batches. The construction speed is fast and the quality is easy to guarantee. However, due to the high quality of reinforced concrete prefabricated columns, it is difficult to control the swing of the lower end during the lifting process. Therefore, the lower end cannot be quickly and accurately positioned with the foundation piles. , the construction quality and accuracy requirements of reinforced concrete prefabricated columns cannot be guaranteed in the end
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[0020] refer to figure 1 , figure 2 , image 3 , a reinforced concrete precast column positioning device, which includes a cylindrical body 1 for inserting a reinforced concrete precast column 6, a bottom plate 11 is provided at the bottom of the cylindrical body 1, and the inner diameter of the cylindrical body 1 is smaller than that of the reinforced concrete precast column 6 The tip of the column is about 20mm smaller, so that the prefabricated column 6 can be rotated on the locator, and the precast column 6 can be fine-tuned for precise positioning; at the same time, the height of the cylinder 1 is 150mm lower than the tip of the reinforced concrete precast column 6 Left and right, so that the secondary pouring concrete is injected into the locator, so that the locator is filled with concrete, and the prefabricated column 6 is closely combined with the pile body concrete. Bracket steel plates 2 are evenly distributed on the circumference of the upper end of the cylindri...
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The invention discloses a reinforced concrete prefabricated column positioning device and a construction method thereof. The construction method comprises the steps: 1) when constructing the wall of caisson, firstly pre-burying a steel plate, and then welding an I-shaped steel on the steel plate to be fixed; 2) measuring and positioning a positioning device, and fixing a bracket steel plate on the I-shaped steel; 3) pouring concrete on the top part of the positioning device, and positioning the positioning device; 4) welding an upper column sharp on the top part of the reinforced concrete prefabricated column; 5) inserting the column sharp of the reinforced concrete prefabricated column into a cylindrical body of the positioning device, and fine adjusting the prefabricated column so as toensure the precise positioning. The positioning device can effectively and correctly position the reinforced concrete prefabricated column inside a pile hole, has the advantages of simple structure, convenient operation and rapid construction speed, can effectively ensure the construction quality and the precision requirement, and can be widely applicable to the installation and the positioning of the reinforced concrete prefabricated column.
Description
technical field [0001] The invention relates to a positioning device for reinforced concrete prefabricated columns and a construction method for applying the positioning device to reverse construction of underground structure engineering. Background technique [0002] At present, steel pipe columns or cast-in-place reinforced concrete columns are usually used as intermediate support columns in reverse construction of underground structural engineering. Steel pipe columns are expensive, and reinforced concrete columns are used when the bearing capacity is relatively small. However, the method of cast-in-place reinforced concrete columns has the defects of complicated procedures, long construction period, high cost of funds, poor operating environment, and great danger to construction personnel. Therefore, reinforced concrete prefabricated columns are used to replace cast-in-place reinforced concrete columns. Concrete prefabricated columns are prefabricated in the factory and ...
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IPC IPC(8): E04B1/58E04C3/34E02D27/12E04G21/00
Inventor 彭小林
Owner GUANGDONG FOUND ENG GRP CO LTD