Construction method of sole plate post-poured strip form bracing system

A technology of a foundation floor and a construction method, which is applied in the treatment of formwork, the treatment of building materials, the preparation of building components on site, etc., can solve the problem of affecting the construction quality, pollution of the cavity of the post-cast belt, and difficulty of the support material of the post-cast belt. Demolition and other problems, to achieve the effect of simple construction, ensure construction quality, simple production and operation process

Active Publication Date: 2010-09-15
南通建工集团股份有限公司
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AI-Extracted Technical Summary

Problems solved by technology

Generally, the post-cast belt formwork support of the foundation base plate adopts steel mesh formwork, and the post-cast belt support material is difficult to remove, and is generally left in the post-cast belt, and the formwork support material is a one-time consumption; The grout leakage in the gap of the protective layer of the steel bar will cause pollution to the cavity of the post...
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Abstract

The invention discloses a sole plate post-poured strip form bracing system, applicable to sole plate post-poured strip form bracing of basement in constructional engineering. The form bracing system is mainly composed of components of a steel screen mould, a cable-stayed bolt and structural steel back plank, a precast slurry baffle concrete strick and a slurry baffle wood block. The invention utilizes a sole plate reinforcing mattress as a main bracing body, side pressure of concrete at the two sides of the post-poured strip can be effectively braced, the cavity of the formed post-poured strip is clean, tidy and clear and has no concrete pouring oozing or laitance pollution, most materials in the post-poured strip form bracing system are available and can be dismantled and recycled, and design function of post-poured strip can be effectively realized.

Application Domain

Building material handlingForm treatment

Technology Topic

RebarSheet steel +5

Image

  • Construction method of sole plate post-poured strip form bracing system
  • Construction method of sole plate post-poured strip form bracing system
  • Construction method of sole plate post-poured strip form bracing system

Examples

  • Experimental program(1)

Example Embodiment

[0025] A construction method of post-casting with formwork support system for foundation slab includes the following steps:
[0026] 1) Prefabricated concrete retaining bars 1, making steel mesh mold 2; steel mesh mold includes steel mesh 3, each of the steel mesh is rectangular, and the steel mesh is tied by lead wires with vertical steel bars 4, horizontal steel bars 5 and scissors-type lead wire oblique Tension strip 6, 90-degree hooks are set at the end of the vertical steel wire to facilitate the removal of vertical and horizontal steel bars; the upper and lower steel mesh molds reserve 80-120mm steel mesh allowances respectively, which are the corners of the post-cast belt Used for wrapping and blocking the grout; 180-220mm allowance of expanded metal is reserved on one side of each expanded metal mold to facilitate the on-site binding and lap connection between expanded metal molds;
[0027] 2) After the foundation slab cushion concrete, protective layer concrete or advanced water-stop concrete is poured and smoothed and before the initial setting of the concrete, according to the size control requirements of the post-pouring belt, place the precast concrete retaining strip 1 with a line; or on the foundation slab After the cushion concrete or protective layer concrete reaches a certain strength, the plastic internal corner stopper strips are laid at intervals with lines, and the prefabricated concrete grout stopper blocks are laid close to the plastic stopper strip;
[0028] 3) Bind the steel mesh 7 at the bottom of the foundation slab, and leave a longitudinal steel bar close to the steel mesh mold without binding;
[0029] 4) Place the expanded metal mold, and place the profiled steel backing 8 at the overlap between the expanded metal modules, and fix one end of the diagonal bolt 11 through the profiled steel backing and the expanded metal mold bolt, and the other end of the diagonally pulled bolt is connected to the base plate The bottom reinforcement is fixed by lap welding;
[0030] 5) Cut open the barrier between the steel mesh and the bottom steel bar of the bottom plate, and wrap and line the steel mesh at the lower corner of the bottom steel bar of the foundation bottom plate;
[0031] 6) Place a reserved unbound one of the longitudinal bottom steel bars of the bottom plate close to the steel mesh mold and fix it by spot welding with the cross bottom bottom steel bars;
[0032] 7) Binding the steel mesh 9 of the foundation floor surface layer, one of the longitudinal steel bars adjacent to the steel mesh mold and the intersecting floor surface layer steel bars are fixed by spot welding;
[0033] 8) Arrange the diagonal-stayed bolts fixed on the surface layer of the foundation slab, and fix one end of the diagonal-stayed bolt through the steel back corrugation and the steel mesh mold bolt, and the other end of the diagonal-stayed bolt is welded to the surface of the foundation slab by lap welding. fixed;
[0034] 9) Cut open the expanded steel mesh that hinders the upper part of the expanded metal mold and the steel bars on the floor surface layer, and arrange the screed wood square bar 10, wrap the expanded metal on the screed wood square bar, and use lead wire to connect the wood square to the expanded metal The mold and the adjacent foundation slab surface are tied and fixed by steel bars;
[0035] 10) After the concrete on both sides of the post-cast belt has been poured and the concrete has reached a certain strength, remove the block wood square bars, loosen the diagonal bolts and nuts, remove the steel back corrugation, and then remove the vertical steel bars and horizontal steel mesh molds. Reinforcement, and finally remove the precast concrete retaining blocks.
[0036] The scissor-type lead wire diagonal strip uses 8# lead wire.
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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