Prefabricated reinforced concrete gate slot unit for rcc dam and construction method of gate slot
A technology of reinforced concrete and roller compacted concrete, applied in dams, water conservancy projects, sea area projects, etc., can solve problems such as occupying a straight line construction period and affecting the construction progress of roller compacted concrete dams, so as to ensure the construction period, avoid construction difficulties, and fast construction Effect
Pending Publication Date: 2020-03-31
CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES
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Problems solved by technology
The multiple construction procedures such as pouring of normal concrete, binding and welding of steel bars, support and removal of formwork not only have the risk of working at heights, but also often occupy a straight-line construction period, which greatly affects the overall construction progress of the RCC dam
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[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0016] Such as Figure 1-2 As shown, the prefabricated reinforced concrete door slot unit for the roller compacted concrete dam of the present invention, according to the design size, prefabricated the upper and lower bottomless square tube-shaped prefabricated reinforced concrete door slot unit 3 in the prefabrication plant, and the prefabricated reinforced concrete door slot unit 3 There are at least one slot 1 on the two long sides of the top surface of the corresponding prefabricated reinforced concrete door slot unit 3. The two long sides of the bottom surface of the corresponding prefabricated reinforced concrete door slot unit 3 are respectively equipped with plugs 2 that match the position and shape of the slot 1. The four inner corners of the prefabricated reinforced concrete door slot unit 3 are provided with multiple groups of through...
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The invention discloses a prefabricated reinforced concrete gate slot unit for a rcc dam and a construction method of a gate slot. The construction method comprises the following steps of prefabricating the prefabricated reinforced concrete gate slot unit with a slot and a plug in a factory for prefabrication and pre-burying a joint bar; chiseling a contact surface of the prefabricated reinforcedconcrete gate slot unit and the ground concrete; chiseling a contact surface of the prefabricated reinforced concrete gate slot unit and the second phase concrete; chiseling a contact surface of newand old concrete; hoisting the prefabricated reinforced concrete gate slot unit on-site; carrying out layer-by-layer construction to grind concrete; hoisting the upper-layer prefabricated reinforced concrete gate slot unit, and carrying out layer-by-layer construction to grind concrete to a design elevation; and pouring the second phase concrete in a later period and mounting a metal structural part. The construction method avoids defects that it is hard to pour concrete on-site and it is slow to pour the concrete. A socket and spigot joint prefabricated part is quick to construct and construction of the socket and spigot joint prefabricated part and construction of grinding the concrete can be carried out synchronously, so that the construction period of the rcc dam is guaranteed.
Description
technical field [0001] The invention relates to a construction method for a door slot of a roller compacted concrete dam, in particular to a construction method for a prefabricated reinforced concrete door slot unit and a door slot for a roller compacted concrete dam. [0002] technical background [0003] The roller compacted concrete dam is made of ultra-dry hard concrete, which is filled and rolled layer by layer on the surface of the large warehouse, which reduces the amount of cement and formwork, and has fewer joints and blocks, continuous construction, simple temperature control, and high construction speed. Fast, low engineering cost and other advantages. In order to ensure the local stress of the weakened parts of the dam structure, the corresponding parts are set as normal concrete and equipped with stressed steel bars. The multiple construction procedures such as pouring of normal concrete, binding and welding of steel bars, support and removal of formwork not onl...
Claims
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IPC IPC(8): E02B7/04E02B7/20E02D15/02
CPCE02B7/04E02B7/20E02D15/02
Inventor 王立成赵健张淑鹏计炳生翟政于可忱常玉龙丁志宏常媛吴义方
Owner CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES
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