Method for block-by-block casting of concrete continuous beam bridge by using military truss shift mould
A technology of shifting formwork and truss is applied in the field of concrete continuous girder bridges cast in blocks by using military truss shifting diecasting. good effect
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[0025] Example 1: The method of using two-hole longitudinal steel truss to move the mold and block the concrete continuous beam bridge by hole Picture 1-1 with 1-2 Shown:
[0026] a. Conditions of use: When the construction period is not controlled, in order to save the amount of steel trusses, the longitudinal steel truss 1 has a total length of 2.5L, and the single-span box girder pouring process is implemented in two sections A and B. Only one span is poured. In order to meet the requirements of the longitudinal movement and anti-overturning stability of the longitudinal steel truss 1, a guide beam 6 should be erected on the transverse steel truss 5 at the front end of the moving mold.
[0027] b. Applicable span: when L≤25m, Bailey longitudinal steel truss 1, 1.5m high, 3m long, 0.23m wide, and 270kg weight for each piece of vertical steel truss 1, which is 1.5m high, 3m long, 0.23m wide, and 270kg in weight. The installation is very convenient. Allowable bending moment [M] = ...
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[0039] Example 2 such as image 3 Shown: a method of using temporary mid-span piers for concrete continuous girder bridge shifting and sub-block pouring. When 25m
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[0040] Example 3 such as diagram 2-1 , 2-2 , 2-3, 2-4, and 2-5: A method of simultaneously pouring two-span concrete continuous beam bridges (CMSS) using three-hole longitudinal steel truss by moving molds and blocks (CMSS for short), when 25m
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