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Preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer

A step-type, bottom plate technology, applied in water conservancy projects, marine engineering, water conservancy engineering equipment and other directions, can solve the problems of easy cracks in the pier wall of the flow channel layer, general water-stop effect at construction joints, and difficulty in controlling the quality of construction joints, etc. Achieve the effect of solving the poor water stop effect, improving the management and control level and quality, and reducing the difficulty of construction

Active Publication Date: 2018-06-08
上海市水利工程集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The runner of Zhangma pumping station project is a steel formwork. According to the above-mentioned method ①, the runner steel formwork needs to be fixed in place before the bottom plate is poured. The quality of the construction joints and the water-stop effect at the construction joints are mediocre. At the same time, due to the large constraints of the bottom plate, the pier wall of the flow channel layer is prone to cracks

Method used

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  • Preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1: as attached figure 1 As shown, the construction method includes the following steps:

[0074] 1. Reinforcement engineering;

[0075] (1) Standing and binding of reinforcement bars on the base plate: positioning and setting out of reinforcement bars, binding of reinforcement bars at the bottom of the base plate, setting and fixing of stirrup bars, binding and fixing of reinforcement bars at the top layer of the base plate;

[0076] (2) Vertical reinforcement binding of the side wall of the runner: the vertical reinforcement of the side wall of the runner is erected and fixed, and the horizontal reinforcement within 1m of the lower part of the side wall of the runner is bound;

[0077] 2. Template engineering;

[0078] (1) Erection and reinforcement of base plate 3 formwork: base plate 3 formwork lofting, base plate 3 formwork processing, base plate 3 formwork erection, base plate 3 formwork reinforcement.

[0079] (2) Formwork erection and reinforcement ...

Embodiment 2

[0089] The project is a two-way diversion and drainage pumping station with a design flow rate of 60m 3 / s, using four 15m 3 / s two-way vertical shaft through-flow pump. The floor section of the standing body is 40m long, 30m wide, and 1.35m thick, and all the concrete is poured at one time. The runner is a special-shaped runner, and the concrete is poured using a combination of steel formwork and wood formwork.

[0090] The main function of the diversion pump gate in the reconstruction and expansion project of the pump gate of Diandong Water Conservancy Project is to divert water from Qingsong area to Dianbei area in one direction. The design flow rate of the diversion pumping station is 20m 3 / s, the design flow rate of the sluice emergency drainage is 58m 3 / s. The length of the main pump room is 24.6m, the width is 28.0m, the thickness of the side pier of the pump room is 1.2m, and the thickest part of the bottom plate is 1.6m.

[0091] The bottom plate of the standi...

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Abstract

The invention discloses a preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer. Under the circumstance that the flow channel layer is the special-shaped structure of gradient section and with the adoption of floor pouring technique, the height of the side wall of flow channel layer within two thirds of the width of the outboard of side wall is about 0.5m. The improved section of the side wall of flow channel layer is segmented by adopting overhanging model. By means of welding, a sealing plate is connected with a reticulate frame. After the floor pouring process is finished, the formed faulting is used as the stress release channel for the side wall of flow channel layer. The preparation method for baseboard of mainpipe and sluice and step-style construction joint for side wall of flow channel layer can reduce the difficulty in constructing baseboard, enlarge the pouring space of concrete base slab and improve the managing and controlling level and quality of the floor pouring of concrete base slab. The preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer can use the formed faulting in the floor pouring section as the release channel for the side wall of flow channel layer to reduce the restriction of the baseboard on the flow channel layer, which is beneficial to control the cracks caused by the temperature of concrete on the side wall of flow channel layer. The sealing plate, together with the floor pouring section, has a good water proofing effect. In one word, the preparation method for baseboard of main pipe and sluice and step-style construction joint for side wall of flow channel layer can obviously save the time forconstruction and accelerate the process of construction.

Description

technical field [0001] The invention relates to a construction method that can reduce the construction difficulty of the bottom plate of the pump gate project and increase the water-stop effect of the construction joint in the water conservancy project classified by IPC, especially the step-type construction sewing of the main bottom plate of the pump gate and the side wall of the flow channel layer. method. Background technique [0002] Pump gates, as the main structures of plain river network water conservancy projects, have appeared in large numbers in recent years. During the construction of the main body of the pump gate, the concrete for the bottom plate and the runner layer needs to be poured twice, and construction joints will inevitably appear between the two pours. The existing construction methods mainly include the following two types: ① When pouring the base plate, the concrete of the runner layer with a height of about 0.5m is brought up, and the construction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/16E02B1/00
CPCE02B1/00E02B3/16
Inventor 张在鹏姚丽俊严均蔚倪磊陈建峰胡芸川韩旭秦孟楠陈杰王鹏张晓东
Owner 上海市水利工程集团有限公司
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