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A deep foundation pit supporting axial force mechanical control device and its control method

A technology of regulating devices and supporting shafts, which is applied in excavation, foundation structure engineering, foundation structure testing, etc., can solve problems affecting the control of foundation pit structure, and achieve the effect of simple structure, convenient operation, and control of foundation pit deformation

Active Publication Date: 2019-04-02
SHANGHAI CONSTRUCTION GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During use, the steel wedge will undergo plastic deformation under the action of axial force, and the pre-applied axial force will also decay with time, thus affecting the control of the deformation of the foundation pit structure

Method used

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  • A deep foundation pit supporting axial force mechanical control device and its control method
  • A deep foundation pit supporting axial force mechanical control device and its control method
  • A deep foundation pit supporting axial force mechanical control device and its control method

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Embodiment Construction

[0025] Example: refer to Figure 1-3 As shown, a deep foundation pit support axial force mechanical control device is horizontally supported on the steel purlin 2 of the foundation pit enclosure structure 1, and includes hinge seats 3 arranged on the same horizontal support line in sequence from left to right , axial force adjustment mechanism, fixed end support steel 4, the hinge seat 3 is fixed on the steel purlin 2 on one side of the foundation pit enclosure structure 1, and the outer end of the fixed end support steel 4 is fixed on the other side of the foundation pit enclosure structure 1 On the steel purlin 2 on the opposite side.

[0026] The axial force adjustment mechanism of the present invention includes a left-hand rotation support 5 and a right-hand rotation support 6 arranged symmetrically on the left and right and with a built-in cylindrical slot 7, a rotation handle 8 connecting the left rotation support 5 and the right rotation support 6, Connect the tension ...

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Abstract

The invention discloses a mechanical regulation and control device and method for pit supporting shaft force of a deep foundation pit. The regulation and control device comprises a hinge base, a shaftforce adjusting mechanism and a fixed end supporting steel, wherein the axial force adjusting mechanism comprises a left rotary support and a right rotary support which are symmetrically arranged ina left-right mode and are internally provided with column-shaped groove holes, a rotary handle connected to the left rotary support and the right rotary support, a tension-pressure sensor connected tothe left rotary support and the hinge base, and a terminal display electrically connected to the tension-pressure sensor; and the right rotary support is fixed to the inner side end of the fixed endsupport steel, screw rods are arranged in the column-shaped groove hole of the left rotary support and the column-shaped groove hole of the right rotary support respectively, two sides of the rotary handle are provided with round columns which can be inserted into the corresponding side column-shaped groove holes respectively, inner wire holes which are in threaded fit with the screw rods are formed in the round column, and when the rotating handle is rotated, the two screw rods stretch out or retract in the corresponding inner wire holes simultaneously. The mechanical regulation and control device and method has the advantages that the supporting force eis monitored, shaft force is further added, foundation pit deformation is controlled, and the construction safety of the foundation pit is ensured.

Description

technical field [0001] The invention belongs to the technical field of foundation pit construction in civil engineering, and in particular relates to a mechanical control device and a control method for supporting axial force in deep foundation pits. Background technique [0002] With the continuous improvement of social civilization, the emergence of large cities and super-large cities has accelerated the development needs of urban rail transit and super high-rise buildings. There are more and more deep foundation pit projects, and the positions between buildings are getting closer As it gets closer, the impact of engineering construction is getting bigger and bigger, reaching the situation of "one part mobilizes the whole body". Deep foundation pit construction must first consider the safety of the foundation pit. The construction of deep foundation pits is accompanied by strong environmental effects. If the deformation control of deep foundation pits cannot be effectively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00E02D17/02E02D17/04
CPCE02D17/02E02D17/04E02D33/00
Inventor 龚剑顾国明朱亮吴联定王坚
Owner SHANGHAI CONSTRUCTION GROUP
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