What principles follow for the distribution of bridge steel formwork

What kind of principles should be followed in the distribution of bridge steel formwork? Hubei Wangke Template Co., Ltd. tells everyone as follows:

1. Specification

Any engineering design must pay attention to specifications, for example, when the bridge steel formwork is matched with the board, the strength should be emphasized. Whether the design of rigidity, stability, shape and size meet the national design specifications.

2. Matching board image

If the design of the bridge is a battle, then the board plan is the battle plan of the battle, and there is no board The picture does not act, the manufacturer needs the board drawing to accurately mark the quantity and position of the steel formwork. The advantage of choosing a plate with a larger area is that it can reduce the loss of the steel template to the drilling.

3. Long direction stitching

The use of long-directional splicing can make the overall rigidity of the steel template have a better effect. It is worth noting that : When the bridge steel formwork is matched with the board, try to ensure its structure and loading and unloading are simple, and ensure that there is no leakage in the process of boarding.

What are the principles that should be followed when the steel template is assembled?

1. Ensure that the shape, size and mutual position of the components are correct.

2. Make the steel formwork have sufficient strength, rigidity and stability to withstand the weight of fresh concrete And lateral pressure, and various construction loads.

3. Strive for simple structure, convenient assembly and disassembly, without obstructing the binding of steel bars, and ensuring that there is no leakage when concrete is poured.

4. For the prepared template, the general and large template should be selected first, so that the type and number of blocks are small. The amount of wood mold inlay is relatively small. Set the template of the tension bolt, in order to reduce the drilling loss of the steel template, 55mmx100mm planed square timber can be used instead of the bolt part.

5. The longitudinal splicing of the template should be staggered to increase the overall rigidity of the template.

6. The layout design of the template should be drawn with a layout diagram, marking the location, specification and model of the steel template Quantity. The pre-assembled large template shall be marked with its dividing line. The positions of the embedded body and reserved holes shall be marked on the board plan, and the fixing method shall be indicated.

7. The support system of the template should be arranged according to the load of the template and the stiffness of the components.

(1) When the template end seams are arranged flush, generally each steel template should have two steel corrugated supports ; When staggered, the spacing can not be restricted by the position of the end seams.

(2) Pre-assembled templates that can be used multiple times in the same project should be connected to the supporting system. Into an integral formwork.

(3) The support system should be designed and calculated to ensure sufficient strength and stability. When the slenderness ratio of the pillar or its inter-section is greater than 110, the calculation should be carried out according to the critical load, and the safety factor can be 3 to 3.5.

(4) For continuous or bent pillars, horizontal braces and scissor braces should be properly configured to Ensure its stability.