Tsang Gaudet Bridge, Cross The Stone Yellow Highway, Continuous Beam Construction Bracket Calculation Analysis

The falsework system is widely used in the bridge construction with its simplicity and good performance as a whole. While the improper control of the strength status of falsework system in the application will induce the accidents of falsework collapse and the personnel casualty, which brings a large amount of economic loss. Taking the construction scaffold of continuous beam for the Cangde Bridge acrossing the ShiHuang expressway as the engineering background, the finite element model for support system of cuplock joint scaffold is established. The strength, stiffness and stability of the scaffold system are analysed and the load-bearing capacity of the corresponding pavement and foundation is calculated and checked.The chief achievements are as follows:1. Briefly introduce the research background and the significance of the project, generalize the application and the developing process of the scaffold, and summarize the performance characteristic of cuplock joint scaffold.2. General finite element software ANSYS is used to set up the space analysis model for the support system of cuplock joint scaffold, in which reasonable boundary conditions are considered, and strength, stiffness and stability of the scaffold system are analyzed. The results show that under various of loads, the cuplock joint scaffold, I22b I-steel distributive girder, bailey beam,2140b I-steel cross girder and steel-pipe column all satisfy requirements.3. The pipe column with gap is locally analyzed. The results show that slenderness ratio less than permissible value, that is, stability meets requirements. The maximal von Mises stress of single pipe column for original design more than permissible value, strength does not meet requirements. After making the improvement, strength meets the local analysis requirements.4. The load-bearing capacity of the corresponding strip foundation, highway pavement and foundation are calculated. The results show that all of them satisfy requirements.5. The proposal that in the process of construction the scaffold of each span is preloaded and the local stability of pipe column is strengthened, is given, and it has achieved good results in engineering practice.