The construction line type control of each beam section adopts computer to monitor the deflection change of the beam, and compares and analyzes the theoretical calculation value with the field measured value, so as to effectively guide the field construction.
It is characterized by no need to establish floor support, large lifting and transportation machines and tools.
The straight section of side span shall be constructed with floor support.
The closure section is constructed with hangers, and the continuous beams are closed in the order of side span first and then middle span.
There is no restriction on navigation and passage under the hole.
The cantilever pouring method is applicable to continuous beams and continuous rigid frames with high piers and long spans.
The preparation purpose is to clarify the cantilever pouring continuous box girder construction process, operation points and quality standards, and standardize and guide the cantilever pouring continuous box girder construction operation.
The concrete of the box girder is transported to the pouring face by the concrete pump.
After the construction of 0# block, the box girder shall be temporarily consolidated to form a “T-structure” before continuous cantilever casting construction, and then each T-structure shall be closed to form a continuous beam after system conversion.
During the construction of box girder, the reinforcement hoisting, hanging basket assembly, other materials and small machines and tools shall be hoisted in place by truck crane or tower crane, and the personnel shall go up and down through the zigzag pedal set up by the steel pipe on the platform.
Click the text above to pay attention to our cantilever pouring continuous beam construction operation instruction 1.0.
The main construction equipment is hanging basket.
Each T-structure adopts a pair of (2) hanging baskets for symmetrical suspension casting construction at the same time.
Step 1: the construction of bridge foundation and pier body is completed…
4.0 main procedure 5.0 overall construction scheme: after the foundation and pier body construction of continuous beam are completed, the construction of section 0 shall be started, and the construction of section 0 shall be carried out by support method.
The scope of application is applicable to the preparation of continuous beam cantilever pouring construction of highway bridge engineering.
2.0 the preparation is based on 3.0 of technical code for construction of highway bridges and culverts and standard for quality inspection and evaluation of highway engineering.
