Pushing construction method for prefabricated concrete bridge deck slab of steel-concrete composite beam
A technology of precast concrete and jacking construction, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as high cost of large-tonnage jacking equipment, inability to meet the cast-in-place construction period, and installation of hoisting equipment not allowed. Achieve the effect of facilitating construction quality control, not affecting the mechanical performance of the structure, and reducing the process of on-site construction
Inactive Publication Date: 2020-02-11
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Problems solved by technology
[0008] The purpose of the present invention is to overcome the existing steel-concrete composite bridge construction methods existing in the prior art, which may be limited by site conditions and do not allow the installation of hoisting equipment, large-tonnage jacking equipment is expensive, jacking is difficult, and the construction period cannot be satisfied. In view of the above-mentioned deficiencies affected by restrictive factors such as the cast-in-place construction period, a method of pushing construction of the steel-concrete composite beam prefabricated concrete bridge deck is provided, which can economically and efficiently complete the construction of the steel-concrete composite beam when the above-mentioned restrictive factors are encountered. Construction of Concrete Bridge Deck Erection
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[0040] Such as Figure 3-6 As shown, the jacking construction method of a steel-concrete composite beam prefabricated concrete bridge deck according to the present invention comprises the following steps:
[0041] A. If image 3 As shown, the steel beam 2 is pushed and installed in place, and it is used as a working platform for secondary pushing. The top plate 21 of the steel beam 2 is provided with a shear connector 3 and a first slide plate 22. The shear Both sides of the connector 3 are respectively provided with the first slide plate 22, and the first slide plate 22 is arranged along the bridge direction, so as to serve as a working platform for pushing the concrete bridge deck 1;
[0042] B. If image 3As shown, the prefabricated concrete bridge deck 1, the concrete bridge deck 1 comprises two concrete slab transverse segments, the two said concrete slab transverse segments are connected by several transverse connectors 6, and the two said concrete slab transverse segm...
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The invention discloses a pushing construction method for a prefabricated concrete bridge deck slab of a steel-concrete composite beam. The pushing construction method comprises the following steps that firstly, first sliding plates are arranged on the two sides of a top plate in the bridge forward direction when a steel beam is prefabricated, and shear connectors are arranged on the part, betweenthe first sliding plates, of the top plate; longitudinal delay pour slots are reserved in the bottom of a concrete bridge deck slab when the concrete bridge deck slab is prefabricated; secondly, thesteel beam is erected in place and serves as a pushing operation platform, the concrete bridge deck slab is erected on the top plate and pushed, and second sliding plates slide relative to the first sliding plates; and thirdly, after pushing is in place, the concrete bridge deck slab and the steel beam are connected in a shear resisting mode by pouring the longitudinal delay pour slots to connectthe shear connectors. According to the method, the erected steel beam serves as a supporting track, and the prefabricated concrete bridge deck slab is pushed and constructed on the steel beam, so thatthe working period is shortened, the structural stress performance is not influenced, and economical efficiency, convenience and reasonability are achieved.
Description
technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction method for pushing a prefabricated concrete bridge deck of a steel-concrete composite beam. Background technique [0002] Such as Figure 1-2 As shown, the steel-concrete composite bridge is a composite structure bridge composed of concrete bridge deck 1 and steel girder 2 connected as a whole through shear connectors 3 and jointly stressed. This type of bridge fully utilizes the tensile strength of steel and the strength of concrete. Compressive performance has the following advantages: Compared with reinforced concrete beams, it can reduce the section size and structural weight, reduce earthquake action, reduce foundation costs, save formwork and formwork, and shorten the construction period; compared with steel beams, It can reduce the amount of steel used, improve structural rigidity, increase stability and integrity, and enhance structural fir...
Claims
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Login to View More IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 王应良王问笔陈志辉叶九发廖尚茂
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD