Operation method for laying lattice column in shaft of deep well
An operation method and technology of lattice columns, which are applied in excavation, foundation structure engineering, construction, etc., can solve problems such as easy collapse of deep shaft walls, low work efficiency, affecting the stability of lattice columns and the accuracy of positioning, and achieve saving Working time and manual labor, the effect of improving work efficiency
Active Publication Date: 2017-04-26
RANKEN RAILWAY CONSTR GROUP
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Problems solved by technology
[0005] The object to be solved by the present invention is to provide an operation method for placing a lattice column in a deep shaft, to solve the problem that the wall of the deep well is easy to collapse when the lattice column is placed, which affects the stability of the lattice column and the accuracy of positioning; When it is necessary to set a pile reinforcement cage at the bottom of the lattice column, the requirements for the boom of the crane are high and it is not easy to put the positioning device on the lattice column at one time, resulting in a problem of low work efficiency
Method used
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[0035] like figure 1 As shown, the present invention is an operation method for placing lattice columns in deep shafts, comprising the following steps:
[0036] A: Use mortar to fix the well wall: after the deep well is drilled, a casing with the same height as the deep well is inserted into the deep well, and the gap between the deep well and the casing is filled with mortar9;
[0037] B: Install the guide bracket outside the well: connect the two guide brackets on the ground according to the structural form of the lattice column 6 through bolts and nuts;
[0038] C: Put the guide bracket into the well: measure and mark the x and y directions of the lattice column 6 to be installed at the deep well head, then put the guide bracket into the deep well according to the marked x and y directions, and place One end of the guide bracket is fixed on the ground;
[0039] D: Put the lattice column into the well: Connect two lifting rings 8 to the opposite inner walls of the lattice ...
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The invention discloses an operation method for laying a lattice column in a shaft of a deep well. The operation method comprises the following steps of first fixing the wall of the well by adopting mortar, and then mounting guide brackets outside the well, wherein two guide brackets are cooperatively connected through bolts and nuts according to the structural form of the lattice column; and subsequently, carrying out setting-out measurement and marking on the directions x and y of the lattice column needing to be mounted at a mouth of the well, then putting the guide brackets into the deep well according to the marked directions x and y, then putting the lattice column into the deep well under the limit of the guide brackets through suspension rings, and finally, taking the guide brackets out from the well, wherein, in addition, the guide brackets are formed by mutually connecting elevation adjusting mechanisms and ground brackets. By using the operation method for laying the lattice column in the shaft of the deep well, the problems that the lattice column easily generates rotary misplacement to produce a potential safety hazard when being laid, and an auxiliary device for laying the lattice column is used for accurately connecting the lattice column uneasily, so as to cause the waste of manual labor force and a working time, in the prior art are solved.
Description
technical field [0001] The invention relates to the technical field of construction of lattice columns in underground deep foundation pits, in particular to an operation method for placing lattice columns in deep shafts. Background technique [0002] In the construction of deep foundation pits for rail transit or housing construction, for the foundation pit support structure in the form of retaining piles + inner support, when the width of the foundation pit exceeds a certain limit, when erecting steel supports, it is necessary to set vertical supports in the middle of the steel supports. To prevent the foundation pit from being too long, the mid-span deflection is too large, and the steel support (or concrete support) is affected by the force, the vertical support is called "lattice column". The lattice column is generally welded into a rectangle by section steel, and is buried in the foundation pit to set the position by drilling holes on the ground in advance. Since the ...
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Login to View More IPC IPC(8): E02D17/08
CPCE02D17/083
Inventor 李小刚
Owner RANKEN RAILWAY CONSTR GROUP