CN213709548U - Advanced structure system for positive and negative zero beam plates in deep foundation pit building seat area - Google Patents
Advanced structure system for positive and negative zero beam plates in deep foundation pit building seat area Download PDFInfo
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- CN213709548U CN213709548U CN202022369445.0U CN202022369445U CN213709548U CN 213709548 U CN213709548 U CN 213709548U CN 202022369445 U CN202022369445 U CN 202022369445U CN 213709548 U CN213709548 U CN 213709548U
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- negative zero
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000007921 spray Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 38
- 239000011229 interlayer Substances 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 238000001556 precipitation Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 24
- 238000009412 basement excavation Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The deep foundation pit comprises a spray anchor slope protection, a drainage ditch, a dewatering well and a cushion layer, wherein the structure system comprises vertical supporting lattice columns, pier columns and ring crown beams which are sequentially arranged from the bottom of a pit, the vertical supporting lattice columns penetrate through the cushion layer and are supported at the bottom of the foundation pit through vertical column piles, sandwich bottom beam plates, sandwich wall columns and positive and negative zero beam plates are sequentially arranged on the ring crown beams, and conversion beams are arranged between the sandwich bottom beam plates under the sandwich wall columns and between the ring crown beams. The utility model discloses can effectively solve the restriction that reverse construction method construction received basement layer height, unable height-adjusting, and dig earth and need go on under the complete closed condition in top, can take lead to accomplish the regional positive and negative zero beam slab of deep basal pit building seat.
Description
Technical Field
The utility model relates to a construction field specifically belongs to a regional positive and negative zero beam slab of deep basal pit building seat structure system in advance.
Background
The reverse construction method is mature day by day, the application of the reverse construction method in deep foundation pit support is more, but the supporting position is limited by the height of a basement layer during construction, the height cannot be adjusted, and the excavation needs to be carried out under the condition that the top is completely closed. The utility model discloses a regional positive and negative zero beam slab of deep basal pit building seat structure system in advance refers to reverse construction method construction technology, can take the lead to accomplish the regional positive and negative zero beam slab of deep basal pit building seat, adopts stud and lattice column as vertical supporting structure, ensures the security and the stability of positive and negative zero beam slab, shortens the time that the positive and negative zero beam slab of building seat was accomplished, do the construction in advance that is used for local basement roof to the narrow and small engineering in place, the material of being convenient for is stacked, further explore and use deep basal pit engineering construction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a regional positive and negative zero beam slab of deep basal pit building seat structure system in advance solves the regional positive and negative zero beam slab of deep basal pit building seat difficult problem in advance of prior art, effectively ensures the security and the stability of the positive and negative zero beam slab of construction completion simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a regional positive and negative zero beam slab of deep basal pit building seat structure system in advance, the deep basal pit is including spouting anchor bank protection, escape canal, precipitation well and bed course, its characterized in that: the structural system includes and sets up vertical support lattice column, pier stud and ring crown roof beam in order from the tank bottom, and vertical support lattice column passes the bed course and supports at the foundation ditch tank bottom through the stand pile, be equipped with intermediate layer sill plate, intermediate layer wall post and positive and negative zero beam slab on the ring crown beam in order, be equipped with the conversion roof beam between the intermediate layer sill plate under the intermediate layer wall post, between the ring crown beam.
Furthermore, the side face, close to the inner side of the foundation pit, of the interlayer bottom beam plate is provided with a basement top beam plate, and the basement top beam plate, the interlayer bottom beam plate and the top face of the conversion beam are flush.
Furthermore, the ground storehouse top beam plate, the conversion beam and the interlayer wall column are respectively extended out of the ground storehouse beam plate throwing rib, the underground layer wall column throwing rib and the first layer wall column throwing rib, and the ground storehouse beam plate throwing rib, the underground layer wall column throwing rib and the first layer wall column throwing rib are all sleeved with PVC pipes for protection.
Furthermore, the height of the bottom surface of the conversion beam is higher than that of the top surface of the ring crown beam.
Furthermore, the vertical supporting lattice column is welded with the vertical column pile reinforcement cage, and the vertical supporting lattice column enters the position below the pile top of the vertical column pile and is not less than 3 m.
Furthermore, a supporting template system is arranged on the cushion layer.
Furthermore, the inner rib of the top beam plate of the ground warehouse is anchored into the adjacent sandwich wall column.
In addition, a steel tie beam is arranged between every two adjacent vertical supporting latticed columns.
More preferably, the slope of the spray anchor slope protection is 1:0.8, the precipitation well is a steel pipe well, and the elevation of the well pipe bottom is 5m below the elevation of the foundation pit bottom.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
the utility model discloses can effectively solve the restriction that reverse construction method construction received basement layer height, unable adjustment height, the relevant problem that the excavation needs to go on under the complete enclosed state in top, can take the lead to accomplish the regional positive and negative zero beam board of deep basal pit building seat, adopt upright post pile and vertical support lattice column as vertical support structure, ensure the security and the stability of positive and negative zero beam board, shorten the time that the positive and negative zero beam board of building seat was accomplished, do the construction in advance that is used for local basement roof to the narrow and small engineering in place, the material of being convenient for is stacked.
Drawings
Fig. 1 is a schematic structural view of a prior positive and negative zero beam plate structure in a deep foundation pit building seat area of the present invention;
fig. 2 is a schematic structural view of a stud pile and a vertical support lattice according to the present invention;
fig. 3 is a structural diagram of the position relationship between the vertical support lattice and the steel tie beam according to the present invention.
Reference numerals: 1-spraying anchor slope protection; 2-a drainage ditch; 3-dewatering well; 4-cushion layer; 5-vertically supporting the lattice column; 6-pier stud; 7-ring crown beam; 8-sandwich bottom beam plate; 9-interlayer wall columns; 10-positive and negative zero beam plates; 11-a transfer beam; 12-a basement roof beam slab; 13-throwing ribs of the beam plates of the ground warehouse; 14-underground one-layer wall column slinging; 15-first layer wall post throwing ribs; 16-a supporting template system; 17-a stud; 18-steel tension beam.
Detailed Description
In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention will be further described below.
The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
A deep foundation pit floor area positive and negative zero beam plate advanced structure system is disclosed, as shown in figure 1, the deep foundation pit comprises a spray anchor slope protection 1, a drainage ditch 2, a precipitation well 3 and a cushion layer 4, the structure system comprises a vertical support lattice column 5, a pier column 6 and a ring crown beam 7 which are sequentially arranged from the bottom of the pit, as shown in figure 2, the vertical support lattice column 5 passes through the cushion layer 4 and is supported at the bottom of the foundation pit through a vertical column pile 17, the ring crown beam 7 is sequentially provided with an interlayer bottom beam plate 8, an interlayer wall column 9 and positive and negative zero beam plates 10, a conversion beam 11 is arranged under the interlayer wall column 9 and between the interlayer bottom beam plates 8 and the ring crown beam 7, the side surface of the interlayer bottom beam plate 8 close to the inner side of the foundation pit is provided with an underground roof beam plate 12, the interlayer bottom beam plate 8 is level with the top surface of the conversion beam 11, the underground roof beam plate 12, the conversion beam 11 and the interlayer wall column 9 are respectively extended with an underground roof beam plate 13, an underground wall column sling 14 and a first layer wall column 15, the underground warehouse beam plate sling 13, the underground layer wall column sling 14 and the first layer wall column sling 15 are all sleeved with PVC pipes for protection, the height of the bottom surface of the conversion beam 11 is higher than the elevation of the top surface of the ring crown beam 7, the vertical support lattice columns 5 are welded with the steel reinforcement cage of the vertical column pile 17, the vertical support lattice columns 5 enter the position below the pile top of the vertical column pile 17 and are not smaller than 3m, a support template system 16 is arranged on the cushion layer 4, the inner ribs of the underground warehouse top beam plate 12 are anchored into the adjacent interlayer wall column 9 as shown in figures 2 and 3, a steel tie beam 18 is arranged between the adjacent vertical support lattice columns 5, the slope of the spray anchor slope protection 1 is 1:0.8, the construction steps are inserting ribs, hanging nets and concrete spraying, the dewatering well 3 is a steel pipe well, and the elevation of the bottom of the well pipe is 5m below the elevation of the bottom of.
The utility model discloses well vertical support lattice column position sets up the stand pile, and the stand pile adopts bored concrete pile construction process to be under construction. And after the construction of the dewatering wells around the building seat is finished, earth excavation is carried out, and a supporting template system is erected after a cushion layer, a drainage ditch and a spray anchor slope protection are finished. The top of the vertical supporting lattice column is provided with a column pier, the column piers are connected by adopting a ring crown beam, and the position of the interlayer wall column is provided with a conversion beam consistent with the top elevation of the interlayer bottom beam plate. And (4) finishing the construction of the top beam plate, the interlayer wall column and the positive and negative zero beam plates of the ground warehouse in sequence according to the drawing requirements, and correspondingly finishing the rib throwing of the first-layer wall column, the rib throwing of the underground first-layer wall column and the rib throwing of the beam plate of the ground warehouse. And steel tie beams are welded between the vertical supporting lattice columns for connection.
In this embodiment, the advanced construction method of the positive and negative zero beam slabs in the deep foundation pit building seat area includes:
the method comprises the following steps: firstly, a cast-in-place pile construction process is adopted to construct the upright post pile, and the vertical supporting lattice column and the upright post pile reinforcement cage are welded and synchronously placed.
Step two: and dewatering after the dewatering well around the building seat is constructed, performing earthwork excavation on the building seat after the excavation conditions are met, and then completing the construction of a cushion layer, a drainage ditch and a spray anchor slope protection in sequence.
Step three: the supporting template system is set up on the upper portion of the cushion layer, column piers are arranged at the tops of vertical supporting lattice columns exposed by excavation, the column piers are connected through ring crown beams, conversion beams are arranged at the positions of the interlayer wall columns and are consistent with the top elevations of the interlayer bottom beam plates, construction of the top beam plates of the basement, the interlayer wall columns and positive and negative zero beam plates is completed in sequence according to drawing requirements, and rib throwing of the first-layer wall columns, rib throwing of the underground first-layer wall columns and rib throwing of the beam plates of the basement are correspondingly completed.
Step four: and after the earthwork of the foundation pit is excavated to the inner support elevation, steel tie beams are welded among the vertical support lattice columns for connection.
In the embodiment, the diameter of the upright post pile is 850mm, and C25 underwater concrete is poured. The vertical supporting lattice column is formed by welding L160 multiplied by 16mm angle steel and 14mm thick 125 multiplied by 450mm steel batten plates, and the distance between the steel batten plates is 500 mm. The length of the vertical supporting lattice column extending into the column pier is 450mm, and the vertical main rib of the column pier extends into the crown beam of the ring by 400 mm. The supporting template system adopts fastener type steel pipe scaffold, the beam bottom and vertical rod interval is 600mm, the plate bottom and vertical rod interval is 900mm, and the vertical rod step pitch is 900 mm. The height of the annular crown beam is 800mm, the height of the conversion beam is 700mm, and the concrete strength of the conversion beam is consistent with that of the wall column concrete and is C60. When a construction joint is reserved on a structural member which is in contact with water, a 300 multiplied by 3mm water stop steel plate needs to be reserved.
In other embodiments, the specifications, reinforcing bars and concrete strength of the vertical supporting lattice columns, the column piers, the ring crown beams and the conversion beams need to meet the design checking calculation.
In the embodiment, a cushion layer is made of C20 concrete with the thickness of 200mm, a drainage ditch is built by shale bricks, the slope of the spray anchor slope protection is 1:0.8, a phi 4@200 multiplied by 200mm reinforcing mesh is adopted, a HRB400E bar-planting 14mm dowel bar @1000mm, L =1m, and C15 concrete with the thickness of 50mm is sprayed.
In other embodiments, the slope of the spray anchor slope protection can be selected from 1: 0.5-1: 1.
In this embodiment, the first floor wall post whipping, the underground layer wall post whipping, the ground storehouse beam slab whipping length satisfies standard, drawing and map set requirements, sets up in the less position of atress, adopts pvc pipe and plastic sheeting to carry out the finished product protection.
In the embodiment, the height of the No. 4 building interlayer bottom beam plate is lower than that of the ring crown beam and the conversion beam, and the interlayer bottom beam plate is not constructed; the height marks of the interlayer bottom beam plates of the No. 5 building, the No. 6 building, the No. 7 building and the No. 8 building are consistent with those of the ring crown beam and the conversion beam, and the interlayer bottom beam plates are constructed.
In this embodiment, the steel tie beam is formed by welding L100 × 8mm angle steel and 8mm thick 200 × 440mm steel batten plates, the steel material is Q235B, the distance between the steel batten plates is 1000mm, and the distance between the end steel batten plate and the end of the steel tie beam is not more than 300 mm.
In other embodiments, the steel tie beam specification and steel strength are required to meet design criteria.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a regional positive and negative zero beam slab of deep basal pit floor structure system in advance, the deep basal pit is including spouting anchor bank protection (1), escape canal (2), precipitation well (3) and bed course (4), its characterized in that: the structural system includes that vertical support lattice column (5), pier stud (6) and ring are set up in order from the tank bottom and are covered roof beam (7), and vertical support lattice column (5) pass bed course (4) and support at the foundation ditch tank bottom through stand pile (17), be equipped with intermediate layer sill plate (8), intermediate layer wall post (9) and positive and negative zero beam slab (10) on ring is covered roof beam (7) in order, be equipped with conversion roof beam (11) between intermediate layer sill plate (8) under intermediate layer wall post (9), between ring is covered roof beam (7).
2. The advanced positive and negative zero beam slab structural system of a deep foundation pit floor area as claimed in claim 1, wherein: the side face, close to the inner side of the foundation pit, of the interlayer bottom beam plate (8) is provided with a ground storehouse top beam plate (12), and the ground storehouse top beam plate (12), the interlayer bottom beam plate (8) and the top face of the conversion beam (11) are flush.
3. The advanced positive and negative zero beam slab structural system of a deep foundation pit floor area as claimed in claim 2, wherein: the underground garage top beam plate (12), the conversion beam (11) and the interlayer wall column (9) are respectively provided with an underground garage beam plate sling (13), an underground layer wall column sling (14) and a first layer wall column sling (15), and PVC pipes are sleeved on the underground garage beam plate sling (13), the underground layer wall column sling (14) and the first layer wall column sling (15) for protection.
4. The advanced positive and negative zero beam slab structural system of a deep foundation pit floor area as claimed in claim 1, wherein: the bottom surface elevation of the conversion beam (11) is higher than the top surface elevation of the ring crown beam (7).
5. The advanced positive and negative zero beam slab structural system of a deep foundation pit floor area as claimed in claim 1, wherein: the vertical supporting lattice column (5) is welded with a reinforcement cage of the upright column pile (17), and the vertical supporting lattice column (5) enters into the pile top of the upright column pile (17) to be not less than 3 m.
6. The advanced positive and negative zero beam slab structural system of a deep foundation pit floor area as claimed in claim 1, wherein: and a supporting template system (16) is arranged on the cushion layer (4).
7. The advanced positive and negative zero beam slab structural system of a deep foundation pit floor area as claimed in claim 2, wherein: and the inner ribs of the top beam plate (12) of the ground reservoir are anchored into the adjacent interlayer wall columns (9).
8. The advanced positive and negative zero beam slab structural system of a deep foundation pit floor area as claimed in claim 1, wherein: and a steel tie beam (18) is arranged between every two adjacent vertical supporting lattice columns (5).
9. The advanced structure system of positive and negative zero beam plates in a deep foundation pit floor seat area as claimed in any one of claims 1 to 8, wherein: the slope of the spray anchor protection slope (1) is 1:0.8, the dewatering well (3) is a steel pipe well, and the elevation of the well pipe bottom is 5m below the elevation of the foundation pit bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022369445.0U CN213709548U (en) | 2020-10-22 | 2020-10-22 | Advanced structure system for positive and negative zero beam plates in deep foundation pit building seat area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022369445.0U CN213709548U (en) | 2020-10-22 | 2020-10-22 | Advanced structure system for positive and negative zero beam plates in deep foundation pit building seat area |
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| CN213709548U true CN213709548U (en) | 2021-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277807A (en) * | 2022-01-20 | 2022-04-05 | 中国建筑第八工程局有限公司 | Construction method for underground large-section transfer beam serving as pit-in-pit support |
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2020
- 2020-10-22 CN CN202022369445.0U patent/CN213709548U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277807A (en) * | 2022-01-20 | 2022-04-05 | 中国建筑第八工程局有限公司 | Construction method for underground large-section transfer beam serving as pit-in-pit support |
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Granted publication date: 20210716 |
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