Method for determining stayd-cable bridge construction intermediate state utilizing unit original size

Abstract

The method of using the original size of component elements to determine the intermediate state of cable-stayed bridge construction is a cable-stayed bridge installation calculation technology, specifically the method of using the original size of component elements to determine the intermediate state of cable-stayed bridge construction. The method is: 1. Calculate the original size of the component unit of the cable-stayed bridge in the bridge state. 2. Perform installation calculations. The original size of the unit must be installed to be consistent with the original size of the unit in the completed state of the cable-stayed bridge. , the intermediate tension of the cable-stayed cables can be adjusted. After the installation is completed, the cables of the whole bridge are adjusted to eliminate the influence of concrete shrinkage and creep. 4. The unit size of the cable-stayed bridge in step 3 is deducted from the influence of the internal force of the structure to obtain a new cable-stayed bridge The original size of the bridge unit, 5. Repeat steps 2, 3, and 4 until the internal force of the structure obtained in step 4 is consistent with that in step 4 of the previous cycle. The iteration ends and the construction intermediate state is obtained. The invention has the advantages of small amount of prepared data, fast iteration speed, strong on-site adaptability and high construction efficiency.

Description

technical field [0001] The cable-stayed bridge installation calculation technology of the present invention is specifically a method for determining the construction intermediate state of the cable-stayed bridge by using the original unit size. Background technique [0002] The installation calculation of cable-stayed bridges is different from that of continuous beams and continuous rigid structures. For continuous beams and continuous rigid frames, construction and installation simulation calculations can be carried out first, and then the operating load can be checked and calculated according to the completed bridge after the final installation calculation. Due to its inherent characteristics, the cable-stayed bridge must be calculated first, and then find an appropriate process that can be installed to the final bridge state through some method. The most famous existing method is the regression analysis method, and there are other methods such as the formal test algorith...

AI Technical Summary

Problems solved by technology

The existing method is the most famous method of backward analysis, and other methods such as formal test algorithm, etc., but these methods have in common that the amount of prepared data is large, the convergence speed is slow, and the ability to adapt to field changes is poor.

For example, if the construction steps need to change after the installation calculation is completed, the backward analysis method needs to go through the whole cycle again, which usually requires a few days or even more than a week of work, which will inevitably lead to low construction efficiency

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