Concrete hole post-treatment structure and its construction method
A technology of concrete and prefabricated concrete, which is applied to bridge parts, erection/assembly of bridges, bridges, etc., and can solve problems such as potential safety hazards and large cost of manpower and material resources for dismantling small formwork
Active Publication Date: 2018-05-04
NANJING TECH UNIV
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AI Technical Summary
Problems solved by technology
Due to the large number of reserved holes, it takes a lot of manpower and material resources to remove the small formwork, and in places with high pier heights, it is difficult and dangerous to remove the small formwork of the bottom plate and flange; if the formwork is not removed , a layer of paint will be applied on the surface of the reserved hole, which will bring safety hazards to the follow-up
Method used
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Embodiment 1
[0028] like Figure 1~4 Shown is a structural schematic diagram of the post-treatment structure of the concrete hole of the present invention;
[0029] The post-treatment structure of each concrete hole is bent into a U-shaped structure by a steel bar 4, and the curved part 2 at the bottom of the U-shaped structure is fixed in the prefabricated concrete block 1, wherein the diameter of the prefabricated concrete block 1 is the same as the diameter of the reserved hole match, or slightly smaller than the diameter of the reserved hole, whichever can be smoothly placed at the bottom of the reserved hole. Wherein the two tops of the U-shaped structure are respectively bent portions 3 for engaging and fixing the steel bar 5 , and the curvature of the bent portion 3 should be just enough to fit on the outer surface of the fixing steel bar 5 .
[0030] The distance between the two vertical sides of the steel bar 4 of the U-shaped structure is 1 / 2 to 3 / 4 of the diameter of the precas...
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The invention discloses a concrete hole post-treatment structure and a construction method thereof. The concrete hole post-treatment structure comprises prefabricated concrete blocks and steel bars fixed at the upper parts of the prefabricated concrete blocks, wherein the dimension of the prefabricated concrete blocks is matched with the dimension of preserved holes; the steel bars are of U-shaped structures; the two tops of the U-shaped structures are respectively bending parts used for clamping and fixing the steel bars. The bending parts are reserved on the device per se; the connection of the steel bars used for clamping and fixation is firm; the potential safety hazards are avoided; meanwhile, the device per se is formed by high-strength steel bars and concrete, and is put in the preserved holes, so that the strength of the preserved holes is effectively enhanced; the subsequent paint coating operation is not needed; the cost is reduced.
Description
technical field [0001] The invention relates to a bridge construction device, in particular to a concrete hole post-treatment structure and a construction method thereof. Background technique [0002] With the development of modern civil engineering, the construction of bridges is changing with each passing day. During the on-site construction of the bridge, reserved holes with a diameter of about 10 cm will be left on the top plate, bottom plate or flange of the bridge to facilitate construction operations. After the construction is completed, these reserved holes need to be sealed. The traditional method is to set a small formwork at the bottom of the hole, and usually remove the formwork at the bottom after pouring. Due to the large number of reserved holes, it takes a lot of manpower and material resources to remove the small formwork, and it is difficult and dangerous to remove the small formwork of the bottom plate and flange at places with high pier heights; if the ...
Claims
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IPC IPC(8): E01D19/00E01D21/00
CPCE01D19/00E01D21/00
Inventor 张建东刘朵梁志雯杨海彤周金强卢传忠高乃祥
Owner NANJING TECH UNIV