Concrete pouring method in a closed column
A concrete and closed technology, applied in the direction of instruments, bridges, bridge parts, etc., can solve the problems of entering the warehouse, the vibrator cannot be vibrated effectively, and the concrete voids, etc., to improve the detection efficiency, improve the detection success rate, and ensure the perfusion. quality effect
Active Publication Date: 2022-01-07
CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1
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Problems solved by technology
[0007] The traditional pouring method is the high-throwing type, which enters the warehouse from the top of the column, but due to conditions, it cannot enter the warehouse from the top. Taking the tunnel under the 107 auxiliary road rapid transformation project in Zhengzhou City as an example to illustrate
The underpass tunnel needs to underpin the H9 bridge pier of the Shangding Road ramp at the Shangding Road ramp bridge. According to the design requirements, after the main structure of the underpass tunnel is completed, the previously cut pier needs to be recast. The bridge pier is a 1.5m*1.5m square pier, and the four corners are arcs with a radius of 100mm. In this case, the concrete construction has the following difficulties: 1. The way of concrete storage; due to the limitation of temporary underpinning beams, concrete cannot enter directly from the top Inside the warehouse; 2. The method of pouring and vibrating; the concrete cannot be observed from the outside during the pouring construction process, and the vibrating rod cannot vibrate effectively, especially the density of the concrete at the top is not easy to control; 3. Poor exhaust in the concrete formwork, voids in concrete
[0008] For the existing technology: 1. Due to the limitation of the temporary underpinning beam, the concrete cannot directly enter the warehouse from the upper part; 2. The concrete cannot be observed from the outside during the pouring construction process, and the vibrating rod cannot vibrate effectively, especially The density of the concrete at the top is not easy to control; 3. Poor exhaust in the concrete formwork causes the problem of voids in the concrete, and no effective solution has been proposed yet
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[0073] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0074] like figure 1 and figure 2 As shown, the method for pouring concrete in the closed column may further comprise the steps:
[0075] Step 1, construction preparation, cleaning up the sundries on the construction joint surface 200;
[0076] Step 2, building pile formwork 7;
[0077] Step 3, connect the pipeline;
[0078] Step 4, pouring concrete:
[0079] Step 4.1, laying a concrete base on the construction joint surface 200 of the permanent underpinning beam 9, the upper end of the concrete base is lower than the height of the stop valve 2, and the thickness of the concrete base is 15 mm;
[0080] Step 4.2, pouring the concrete solid layer on the concrete base, the concrete solid layer pouring is carried out in layers, and the pouring thickness is not greater than 1.25 times the length of the action part of the attached vib...
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The application discloses a method for pouring concrete in a closed column, including step 1, construction preparation; step 2, building a pile formwork; step 3, connecting pipelines; step 4, pouring concrete; The concrete base layer is laid on the construction joint surface; step 4.2, pouring the concrete solid layer; step 4.3, vibrating, and starting the lower attached vibrator and the upper attached vibrator in turn while pouring the concrete solid layer; step 5, the concrete Maintenance; step 6, demolition operation; step 7, measure the strength of pile concrete. The concrete pouring method in the closed column transports the concrete to the inside of the closed pile formwork through the ground pump and the pump pipe, and the concrete in the pile formwork is subjected to the action of the jacking force and rolls from bottom to top to fill the pile formwork until The pile formwork is filled with concrete, and the top concrete is exhausted through the exhaust pipe during pouring to ensure that the top concrete is dense.
Description
technical field [0001] The invention relates to the technical field of concrete pouring, in particular to a concrete pouring method in a closed column. Background technique [0002] In the underpinning beam construction project of the bridge pier, after the main structure of the underpass tunnel is completed, the previously cut pier needs to be refilled. [0003] In the prior art, the current concrete pouring method generally enters the warehouse directly from the top of the warehouse, and vibrating rods are directly inserted into the concrete for vibration, and the vibration effect can be directly observed. [0004] For example, the invention patent of Chinese Patent Publication No. CN105986670A discloses a concrete pouring process, which is characterized in that it includes the following process requirements: (1) before pouring concrete, remove surface debris and accumulated water, and first chisel out construction joints The cement mortar film on the surface and the loos...
Claims
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IPC IPC(8): E01D22/00E01D19/02G01N3/52G01N3/08G01N1/08G01N1/28G01B21/10E01D101/24
CPCE01D22/00E01D19/02G01N3/52G01N3/08G01N1/08G01N1/286G01B21/10E01D2101/24
Inventor胡亮田卓伦刘永峰茹广府曾剑张永光冯亚斌赵斌万巧叶张宁时智勇王刚
OwnerCHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD