CN214460441U - Reinforcing system of underground continuous wall - Google Patents
Reinforcing system of underground continuous wall Download PDFInfo
- Publication number
- CN214460441U CN214460441U CN202022571381.2U CN202022571381U CN214460441U CN 214460441 U CN214460441 U CN 214460441U CN 202022571381 U CN202022571381 U CN 202022571381U CN 214460441 U CN214460441 U CN 214460441U
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- steel
- continuous wall
- enclosing purlin
- underground continuous
- purlin
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 171
- 239000010959 steel Substances 0.000 claims abstract description 171
- 239000000463 material Substances 0.000 claims abstract description 32
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 239000011440 grout Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 description 9
- 238000005553 drilling Methods 0.000 description 8
- 238000009415 formwork Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000007788 roughening Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000003351 stiffener Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model discloses a reinforcerment system of underground continuous wall, including enclosing purlin one, enclosing purlin two, a plurality of steel column, girder steel, anchor slab and grout material. The first enclosing purlin and the second enclosing purlin are horizontally arranged along the underground continuous wall and are spaced at a certain distance from top to bottom, and the first enclosing purlin and the second enclosing purlin are connected with horizontal supports; a plurality of steel columns are arranged between the first enclosing purlin and the second enclosing purlin at intervals, and a horizontal steel beam is arranged on one side, far away from the underground continuous wall, of each steel column. The reinforcing system enables the steel column and the steel beam to form a rigid frame, the steel column is fixed with the first enclosing purlin and the second enclosing purlin through the anchor plates, grouting materials are arranged between the steel column and the underground continuous wall, acting force on the underground continuous wall is smoothly transmitted to the rigid frame structure through the grouting materials, and then the acting force is transmitted to the horizontal support through the first enclosing purlin and the second enclosing purlin, so that deformation of the underground continuous wall is controlled, and overall stability of the structure is improved.
Description
Technical Field
The utility model relates to an underground continuous wall construction technology especially relates to a prevention underground continuous wall warp too big reinforcerment system.
Background
The underground continuous wall is used as a water-intercepting, seepage-proofing, bearing and water-retaining structure and is widely applied to underground foundation engineering. When the underground diaphragm wall is used as a maintenance structure of an underground foundation pit, the underground diaphragm wall is likely to generate large deformation due to the action of large one-way soil pressure during excavation of the foundation pit, so that the safety of the foundation pit and the surrounding environment is greatly influenced, and the large safety construction in the foundation pit construction is often caused by large deformation of the underground diaphragm wall. How to prevent the deformation of the underground continuous wall from being too large is a technical problem in foundation pit construction.
SUMMERY OF THE UTILITY MODEL
Produce the problem that warp probably to produce great deformation to underground continuous wall in the foundation ditch construction, the utility model provides a reinforcing system of underground continuous wall, it is effectual to the control that underground continuous wall warp, and construction cost is low.
For solving the technical problem, the utility model discloses a following technical scheme:
a first enclosing purlin and a second enclosing purlin which are arranged at intervals up and down are arranged on an underground continuous wall, and horizontal supports are connected with the first enclosing purlin and the second enclosing purlin; a plurality of steel columns are arranged between the first enclosing purlin and the second enclosing purlin at intervals, and two ends of each steel column are fixed to the lower surface of the first enclosing purlin and the upper surface of the second enclosing purlin through anchor plates; the anchor plate is fixed at the connecting part of the steel column and the first enclosing purlin and the second enclosing purlin through the connecting piece; grouting materials are arranged between the steel columns and the underground continuous wall; one side of the steel column far away from the underground diaphragm wall is provided with a horizontal steel beam, the steel beam is fixedly connected with a plurality of steel columns, and the steel columns and the steel beams form a rigid frame structure.
Furthermore, the connecting piece is a connecting bolt, a bolt hole is formed in the anchor plate, and the anchor plate is fixed with the connecting bolt through a nut.
Furthermore, a plurality of connecting steel bars are arranged between the steel column and the underground continuous wall; horizontal reinforcing steel bar holes are formed in the corresponding positions of the underground continuous wall and the steel beams; one end of the connecting steel bar extends into the steel bar hole, and the other end of the connecting steel bar extends out of the underground continuous wall; grouting materials are arranged in the reinforcing steel bar holes at the periphery of the connecting reinforcing steel bars.
Furthermore, a support steel bracket is arranged below the joint of the steel beam and the steel column, and the steel beam is arranged on the support steel bracket.
Furthermore, a grouting hole is formed in the first enclosing purlin, and the grouting hole is vertically arranged.
Furthermore, a gap is reserved between the top of the steel column and the anchor plate, a steel plate cushion layer can be arranged in the gap, and the steel plate cushion layer and the anchor plate are welded and fixed or fixed through bolts.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art, have following advantage and positive effect: the steel column and the steel beam of the reinforcing system of the underground continuous wall form a rigid frame structure, the steel column is fixed with a first surrounding purlin and a second surrounding purlin through anchor plates, grouting materials are arranged between the steel column and the underground continuous wall, acting force on the underground continuous wall is smoothly transmitted to the rigid frame structure through the grouting materials, and then is transmitted to a horizontal support through the first surrounding purlin and the second surrounding purlin, so that the deformation of the underground continuous wall is controlled, and the overall stability of the structure is improved.
Drawings
FIG. 1 is a flow chart of a method of reinforcing an underground diaphragm wall;
FIG. 2 is a schematic structural view of a reinforcing system for underground diaphragm walls;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a schematic view of the reinforcement of the underground continuous wall at one position of the purlin;
FIG. 5 is a schematic view of the formwork installation;
FIG. 6 is a schematic view of the connection of steel columns and beams.
The numbers in the figures are as follows:
1-underground diaphragm wall; 2-enclosing a purlin I; 3-surrounding purlin II; 4-horizontal support; 5-steel column; 6-steel beam; 7-steel corbels; 8-a connector; 9-anchor plate; 10-a template; 11-grouting material; 12-connecting the reinforcing steel bars; 13-L-shaped lacing wire; 14-stiffeners.
Detailed Description
The present invention provides a reinforcing system for underground diaphragm wall, which is described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent in conjunction with the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Example one
When the underground continuous wall is used as a foundation pit enclosure support, the earth pressure acting on the underground continuous wall can be increased along with the excavation of earth on one side of the foundation pit, so that the underground continuous wall is deformed. Therefore, the maximum soil pressure acting on the underground continuous wall needs to be calculated before construction, the deformation of the underground continuous wall needs to be monitored during construction, and when the deformation is monitored to be large or the deformation rate is fast, reinforcement measures need to be taken. In this embodiment, underground continuous wall is provided with a plurality of layers of purlin that enclose of upper and lower interval, and each layer encloses the purlin and all is connected with horizontal brace, and horizontal brace usually adopts reinforced concrete roof beam or girder steel. For convenience of description, only two layers of surrounding purlins which are adjacent up and down are taken for description, and as shown in fig. 2, the upper surrounding purlin is referred to as a first surrounding purlin 2, and the lower surrounding purlin is referred to as a second surrounding purlin 3. And the first enclosing purlin 2 and the second enclosing purlin 3 are used as foundation reinforcing measures for the underground continuous wall, and when the situation that the deformation is large or the deformation rate is high is monitored in construction, further reinforcing measures are still required to be taken for the underground continuous wall.
The present embodiment provides a method for reinforcing an underground diaphragm wall 1, which is described below with reference to fig. 1 to 6, and includes the following steps:
step one, an operation platform is erected on the horizontal support 4 connected with the second purlin 3. Specifically, I-shaped steel can be laid on the horizontal support 4, channel steel is laid on the I-shaped steel, then the channel steel is fully laid with a pattern steel plate, a protective railing is erected near the edge of the operation range, and a green net is hung outside.
And step two, steel column 5 control lines are released on the upper surface of the second enclosing purlin 3 and the lower surface of the first enclosing purlin 2.
And step three, roughening the surface of the underground continuous wall 1 at the position corresponding to the steel column 5. The process of roughening the concrete surface of the underground diaphragm wall 1 is as follows: firstly, cleaning slurry on the surface of the underground diaphragm wall and degraded concrete such as spalling, loosening, honeycombing, corrosion and the like; roughening the surfaces of the underground continuous walls at the corresponding positions of the steel columns; then removing the scum on the surface by using a steel wire brush; finally, dust is removed by oil-free compressed air or the oil-free compressed air is washed clean by clean water.
And step four, implanting a connecting piece 8 into the connecting part of the steel column 5, the first enclosing purlin 2 and the second enclosing purlin 3, and installing an anchor plate 9 through the connecting piece 8. Connecting piece 8 can be connecting bolt, and before the implantation connecting piece, at first to enclosing purlin 2, enclose two 3 surfaces of purlin clear up, fix a position again, drill hole, clear hole, injecting glue and insert operations such as bolt, wait to inject glue solidification after drawing the inspection to the connecting piece, qualified rear can use. Preferably, the actual drilling positions are marked by three-ply boards, the drilling positions are marked on the anchor plate 9, and then mechanical drilling is carried out at the marked positions on the anchor plate 9, so that the anchor plate 9 is matched with the connecting piece 8.
Fifthly, arranging a plurality of steel columns 5 between the first enclosing purlin 2 and the second enclosing purlin 3 at intervals, wherein the steel columns 5 are spaced from the underground continuous wall 1 by a distance L, the tops of the steel columns 5 are fixed with anchor plates 9 on the first enclosing purlin 2, and the bottoms of the steel columns are fixed with anchor plates 9 on the second enclosing purlin 3; keep away from 1 one side of underground continuous wall at steel column 5 and set up girder steel 6 along the horizontal direction, girder steel 6 and many steel columns 5 fixed connection, steel column 5 forms rigid frame structure with girder steel 6. In this embodiment, the steel columns and the steel beams are all made of H-shaped steel, and of course, the forms of i-shaped steel or double-spliced channel steel and the like can be adopted. Enclose purlin one 2 and enclose between the purlin two 3 interval about can set up a plurality of rows of girder steels as required, set up support steel bracket 7 on the steel column of girder steel and steel column junction below, girder steel 6 sets up on support steel bracket 7. The interval distance L between the steel column and the underground diaphragm wall is determined according to the thickness of the grouting material 11 designed in advance, and if L is too small, erection and grouting operation of the formwork 10 is inconvenient. Typically, L is greater than 20cm, for example, 35 cm. By way of example, the distance between adjacent steel columns is 1m, and two rows of steel beams are arranged on the steel columns.
And step six, installing templates 10 on two sides of the steel column 5, wherein one end of each template 10 abuts against the underground continuous wall 1, and the other end of each template 10 is fixedly spliced with the steel column 5. Formwork 10 may be a wood formwork, and vertical stiffeners 14 may be provided on the outside of formwork 10, and the vertical stiffeners 14 may be long battens. Preferably, the splicing seam between the template 10 and the underground continuous wall 1 is sealed by foaming agent; the sealing method has the advantages of simple operation, low cost and good sealing effect.
And seventhly, injecting grouting material 11 into a space enclosed by the template 10, the steel column 5 and the underground continuous wall 1, and after grouting is finished, removing the template 10 after the grouting material 11 reaches a preset strength. The grouting material 11 may be a high strength epoxy grouting material having a strength level of C50 or more. The solidified grouting material can smoothly transmit the acting force on the underground continuous wall to the steel column, and can effectively avoid stress concentration to cause safety accidents caused by overlarge local deformation of the underground continuous wall.
The utility model provides a reinforcing method of underground continuous wall, the interval sets up a plurality of steel columns on the purlin that encloses of underground continuous wall, and link together the steel column through the girder steel of horizontal direction, make steel column and girder steel form the rigid frame, set up the grout material between steel column and underground continuous wall, thereby pass through the grout material with the effort on the underground continuous wall and smoothly transmit to the rigid frame, then through enclosing purlin one and on enclosing purlin two transmissions to the horizontal braces, thereby control underground continuous wall's deflection, improve the overall stability of structure.
In a preferred embodiment, after roughening the surface of the underground continuous wall 1 at the position corresponding to the steel column 5 in step three, drilling a steel bar hole in the underground continuous wall 1, implanting a connecting steel bar 12 perpendicular to the underground continuous wall 1 into the steel bar hole, and then grouting in the steel bar hole to fixedly connect one end of the connecting steel bar 12 with the underground continuous wall 1, wherein the other end of the connecting steel bar 12 extends out of the surface of the underground continuous wall 1 by a distance less than the distance between the steel beam 6 and the underground continuous wall 1. And (4) after the grouting material is solidified, drawing and inspecting the connecting steel bar 12, and using the qualified connecting steel bar after being qualified. After the grout 11 is poured between the steel column 5 and the underground continuous wall 1, the connection bars 12 are used to connect the cured grout 11 and the underground continuous wall 1 together.
In a preferred embodiment, after roughening the surface of the underground continuous wall 1 at the position corresponding to the steel column 5 in the third step, a lacing wire hole is drilled in the underground continuous wall 1, after the formworks 10 at both sides of the steel column 5 are in place, an L-shaped lacing wire 13 for fixing the formworks 10 is arranged outside a stiffening rib 14 of the formworks 10, one end of the L-shaped lacing wire 13 is inserted into the lacing wire hole, and the other end is welded on the steel column 5. When the steel column 5 is an I-shaped steel beam, the L-shaped lacing wire 13 is connected to a flange plate of the I-shaped steel beam. Of course, the L-shaped tie bars 13 may be replaced by steel plates, i-beams, channel beams, steel pipes, or the like.
The preferred embodiment is that a grouting hole is formed in the first enclosing purlin 2 at the top, the grouting hole is vertically arranged, a main rib of the enclosing purlin is avoided when the grouting hole is drilled, and the diameter of the grouting hole is 6cm as an example. The top of the template 10 is provided with an exhaust hole, and a grouting machine is connected to the grouting hole through a hose during pouring. The grouting material 11 can be cement-based grouting material, when cement-based grouting material is mixed, mechanical mixing is adopted, the total water demand for mixing is calculated, 2/3 water is added for mixing for about 3min, 1/3 water is added for mixing until uniform.
The preferred embodiment is that a gap is reserved between the top of the steel column 5 and the anchor plate 9, a steel plate cushion layer can be arranged in the gap, and the steel plate cushion layer and the anchor plate 9 are fixed by welding or bolts.
Example two
The present embodiment provides a reinforcing system for an underground diaphragm wall, which will be described below with reference to fig. 1 to 6. The reinforcing device comprises a first enclosing purlin 2, a second enclosing purlin 3, a plurality of steel columns 5, steel beams 6, anchor plates 9 and grouting materials 11. And the first enclosing purlin 2 and the second enclosing purlin 3 are horizontally arranged along the underground continuous wall 1 at intervals from top to bottom, and the first enclosing purlin 2 and the second enclosing purlin 3 are connected with horizontal supports 4. A plurality of steel columns 5 are arranged between the first enclosing purlin 2 and the second enclosing purlin 3 at intervals, and two ends of each steel column 5 are fixed on the lower surface of the first enclosing purlin 2 and the upper surface of the second enclosing purlin 3 through anchor plates 9; and the anchor plate 9 is fixed at the connecting part of the steel column 5 and the first enclosing purlin 2 and the second enclosing purlin 3 through the connecting piece 8. The grouting material 11 is arranged between the steel column 5 and the underground continuous wall 1, the grouting material 11 can adopt high-strength epoxy grouting material or cement-based grouting material with the strength grade of C50 or above, and the solidified grouting material can smoothly transmit the acting force on the underground continuous wall to the steel column. One side of steel column 5 far away from underground continuous wall 1 is provided with the horizontal girder steel 6, girder steel 6 and many steel columns 5 fixed connection, and steel column 5 forms rigid frame structure with girder steel 6.
The steel column and the girder steel of the reinforcerment system of underground continuous wall that this embodiment provided form rigid frame structure, the steel column passes through the anchor slab and encloses purlin one and enclose purlin two fixedly, be provided with the grout material between steel column and underground continuous wall, effort on the underground continuous wall transmits to rigid frame structure smoothly through the grout material, then through enclosing purlin one and enclose purlin two transmission to the horizontal support on, thereby the deflection of control underground continuous wall, improve the overall stability of structure.
In a preferred embodiment, the connecting member 8 is a connecting bolt, a bolt hole is formed in the anchor plate 9, and the anchor plate 9 is fixedly connected with the connecting bolt through a nut. Before the connecting piece is implanted, the surfaces of the first enclosing purlin 2 and the second enclosing purlin 3 are cleaned, then the operations of positioning, drilling, cleaning holes, injecting glue, inserting bolts and the like are carried out, after the injecting glue is solidified, the connecting piece is subjected to drawing inspection, and the qualified rear side can be used. Preferably, the actual drilling positions are marked by three-ply boards, the drilling positions are marked on the anchor plate 9, and then mechanical drilling is carried out at the marked positions on the anchor plate 9, so that the anchor plate 9 is matched with the connecting piece 8.
The preferable embodiment is that a plurality of connecting steel bars 12 are arranged between the steel column 5 and the underground continuous wall 1; horizontal reinforcing steel bar holes are formed in the corresponding positions of the underground continuous wall 1 and the steel beams 6; one end of the connecting steel bar 12 extends into the steel bar hole, and the other end extends out of the underground continuous wall 1; grouting materials are arranged in the reinforcement holes around the connecting reinforcements 12.
In a preferred embodiment, a support steel bracket 7 is arranged below the joint of the steel beam 6 and the steel column 5, and the steel beam 6 is arranged on the support steel bracket 7.
The preferable embodiment is that the first enclosing purlin 2 is provided with grouting holes which are vertically arranged. The grout hole is drilled to avoid the main rib of the surrounding purlin, and the diameter of the grout hole is 6cm by way of example. After the grouting material is constructed, the grouting holes need to be sealed together.
The preferred embodiment is that a gap is reserved between the top of the steel column 5 and the anchor plate 9, a steel plate cushion layer can be arranged in the gap, and the steel plate cushion layer and the anchor plate 9 are fixed by welding or bolts. The gap is arranged, so that the steel column can be conveniently installed in place, and after the steel column is placed, the steel plate blocks are plugged into the gap and are welded and fixed. The steel column and the anchor plate can be connected through a connecting steel plate, and the connecting steel plate, the anchor plate and the steel column are fixed through welding or bolts.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The system for reinforcing the underground continuous wall is characterized in that a first enclosing purlin and a second enclosing purlin which are arranged at intervals up and down are arranged on the underground continuous wall, and the first enclosing purlin and the second enclosing purlin are connected with horizontal supports; a plurality of steel columns are arranged between the first enclosing purlin and the second enclosing purlin at intervals, and two ends of each steel column are fixed to the lower surface of the first enclosing purlin and the upper surface of the second enclosing purlin through anchor plates; the anchor plate is fixed at the connecting part of the steel column and the first enclosing purlin and the second enclosing purlin through the connecting piece; grouting materials are arranged between the steel columns and the underground continuous wall; one side of the steel column far away from the underground diaphragm wall is provided with a horizontal steel beam, the steel beam is fixedly connected with a plurality of steel columns, and the steel columns and the steel beams form a rigid frame structure.
2. The underground diaphragm wall reinforcing system according to claim 1, wherein the connecting members are connecting bolts, bolt holes are provided in the anchor plates, and the anchor plates are fixed by nuts and the connecting bolts.
3. The underground continuous wall reinforcing system according to claim 1, wherein a plurality of connecting steel bars are arranged between the steel columns and the underground continuous wall; horizontal reinforcing steel bar holes are formed in the corresponding positions of the underground continuous wall and the steel beams; one end of the connecting steel bar extends into the steel bar hole, and the other end of the connecting steel bar extends out of the underground continuous wall; grouting materials are arranged in the reinforcing steel bar holes at the periphery of the connecting reinforcing steel bars.
4. The system for reinforcing an underground continuous wall according to claim 1, wherein support steel brackets are provided under the joints of the steel beams and the steel columns, and the steel beams are provided on the support steel brackets.
5. The system for reinforcing an underground continuous wall according to claim 1, wherein the first enclosing purlin is provided with grouting holes, and the grouting holes are vertically arranged.
6. The system for reinforcing an underground diaphragm wall as claimed in claim 1, wherein a gap is left between the top of the steel column and the anchor plate, a steel plate cushion layer can be disposed in the gap, and the steel plate cushion layer and the anchor plate are fixed by welding or bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022571381.2U CN214460441U (en) | 2020-11-09 | 2020-11-09 | Reinforcing system of underground continuous wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022571381.2U CN214460441U (en) | 2020-11-09 | 2020-11-09 | Reinforcing system of underground continuous wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214460441U true CN214460441U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022571381.2U Expired - Fee Related CN214460441U (en) | 2020-11-09 | 2020-11-09 | Reinforcing system of underground continuous wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214460441U (en) |
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2020
- 2020-11-09 CN CN202022571381.2U patent/CN214460441U/en not_active Expired - Fee Related
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Granted publication date: 20211022 |