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Construction method for large cast-in-situ steel reinforced concrete inlet channel and turbine housing

A reinforced concrete and construction method technology, which is applied in water conservancy projects, artificial waterways, hydroelectric power generation, etc., can solve problems such as difficulty in guaranteeing molding quality, achieve clear construction levels, reduce the possibility of cracks, and facilitate construction organization.

Inactive Publication Date: 2009-07-08
CHINA CONSTR SECOND ENG BUREAU LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for a large-scale cast-in-place reinforced concrete water inlet and volute, which solves the problem that the molding quality of large-scale cast-in-place reinforced concrete water intake structures is difficult to guarantee, thereby ensuring the service life of the reinforced concrete structures and the installation accuracy of equipment

Method used

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  • Construction method for large cast-in-situ steel reinforced concrete inlet channel and turbine housing
  • Construction method for large cast-in-situ steel reinforced concrete inlet channel and turbine housing
  • Construction method for large cast-in-situ steel reinforced concrete inlet channel and turbine housing

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Embodiment Construction

[0046] The steps of the construction method of the large-scale cast-in-situ reinforced concrete inlet and the scroll shell of the present invention are as follows:

[0047] Step 1 see figure 1 , 2 7, 8, the intake channel and volute are located on the raft foundation of the water intake structure, the bottom raft 3 is constructed first, the ground anchor 10 is embedded in the bottom raft 3 of the intake channel and volute area, and the top surface of the raft foundation concrete is high-pressure Rinse with water to form a uniform and rough construction surface.

[0048] Step 2 see figure 1 , 2 According to the structural characteristics of the inlet and the volute, the inlet area 1 is divided into four parts: the lower part of the outer side of the inlet turn, A, the bottom plate of the inlet B, the outer circumference of the inlet C, and the upper part D of the outer distal end of the inlet. The secondary irrigation area 4 is constructed in blocks, and the volute area 2 is divi...

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Abstract

The invention relates to a large-scale cast-in-situ reinforced concrete water inlet duct and scroll case construction method, the construction sequence is: bottom board of the water inlet duct, far end lower part outside the turning of the water inlet duct, far end upper part outside the turning of the water inlet duct, outer circumference of the turning of the water inlet duct, far end outside the scroll case, near end outside the scroll case, top outside the scroll case and the second pouring construction. The construction method has clear levels, reduces the concrete pouring amount at the key parts of the water inlet duct: the outer circumference of the turning of the water inlet duct and the near end outside the scroll case, by partitioning construction; ensures the concrete forming quality of the water inlet duct and the scroll case; and avoids large volume concrete cracks.

Description

(1) Technical field [0001] The invention relates to a construction method of a large-scale cast-in-place reinforced concrete water intake structure. (2) Background technology [0002] The conventional small-scale cast-in-place reinforced concrete water intake structure construction method is the integral pouring method. Because the conventional small water intake structure has a simple shape and a small amount of one-time concrete pouring, it is easy to ensure the quality. However, for large-scale cast-in-place reinforced concrete water intake structures, it is difficult to ensure the quality of concrete molding by the integral casting method, and quality problems such as holes, exposed bars, and concrete cracks often occur, which affect the service life of the water intake structure. At the same time, because it is cast-in-place at one time, it is difficult to guarantee the position, horizontality, and verticality of the embedded parts inside the water intake structure, which af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B5/02E02D15/00
CPCY02E10/22Y02E10/20
Inventor 李景芳吴荣程惠敏吴树勤夏芬刘垚坦倪金华
Owner CHINA CONSTR SECOND ENG BUREAU LTD
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