Bridge support with height capable of being repeatedly adjusted and operation method thereof

Abstract

A bridge support with the height capable of being repeatedly adjusted comprises a steel lining plate installed between a support top plate and a support bottom plate, a jacking mechanism is arranged at the bottom of the steel lining plate, and the jacking mechanism comprises a jacking assembly, a filling system and a heating system which are sequentially arranged in a basin cavity. The operation method of the bridge support comprises elevation lifting and elevation lowering. The operation method of elevation lifting comprises the following steps: heating a fusible alloy material melted in a temperature control material tank; connecting the heating rod, and filling heat-conducting liquid; fusible alloy materials are injected at high pressure to lift the support; the fusible alloy is naturally cooled to a solid state, and lifting is completed; the elevation reduction operation method comprises the following steps: connecting an external valve group and a temperature control material tank; filling heat-conducting liquid, switching on the heating rod, and enabling the fusible alloy material to flow out to reduce the elevation of the support; the fusible alloy is naturally cooled, and elevation reduction is completed. The support is simple in structure, stepless height adjustment of the support is achieved by injecting or discharging the fusible alloy material into or out of the sealing cavity of the support, the height can be adjusted repeatedly, and the method is convenient, safe and reliable.

Description

technical field [0001] The invention relates to a bridge structure part, in particular to a bridge damping bearing whose height can be repeatedly adjusted. Background technique [0002] (1) With the development of my country's highway transportation industry, there are more comprehensive requirements for the construction and operation of bridges. In the structural structure where settlement occurs, the settlement of the pier, abutment and girder may occur, or it may be at the bridge abutment Settlement occurs, usually during construction, the fill behind the abutment is relatively high, and inevitable natural settlement will occur over time. After the bridge is in operation, the dead load and vehicle load will generate additional pressure on the base, which will also make the abutment tilt backward , resulting in uneven sinking, endangering driving safety. [0003] (2) The proportion of the total length of newly-built railway bridges is relatively large, and the soft soil fou...

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Problems solved by technology

[0002] (1) With the development of my country's highway transportation industry, there are more comprehensive requirements for the construction and operation of bridges. In the structural structure where settlement occurs, the settlement of the pier, abutment and girder may occur, or it may be at the bridge abutment Settlement occurs, usually during construction, the fill behind the abutment is relatively high, and inevitable natural settlement will occur over time. After the bridge is in operation, the dead load and vehicle load will generate additional pressure on the base, which will also make the abutment tilt backward , resulting in uneven sinking, endangering driving safety

[0003] (2) The proportion of the total length of newly-built railway bridges is relatively large, and the soft soil foundation area of ​​many lines is relatively long, so settlement will inevitably occur. force to have an adverse effect;

[0008] (1) The elevation of the support is fixed and cannot be adjusted. If the elevation needs to be adjusted, backing plates or spacers can only be added to the bottom or top of the support. Large, long construction period, high cost, and poor adjustment accuracy;

[0009] (2) The elevation of the existing support can only be adjusted up, and cannot be lowered in reverse; in actual leveling projects, a part of the fulcrum of a beam often subsides and part of it is lifted at the same time. Require;

[0010] (3) The adjustment of the existing support elevation is also limited in the number of adjustments. It is also necessary to determine the number of adjustments in advance before the design, and set a limited number of lifting times in a limited space, which cannot meet the beam settlement and need to adjust the height of the beam or pier The platform settlement needs to reduce the working condition requirements of the beam elevation

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