CN113356232A - Assembled profile steel combined foundation pit supporting method - Google Patents
Assembled profile steel combined foundation pit supporting method Download PDFInfo
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- CN113356232A CN113356232A CN202110732763.5A CN202110732763A CN113356232A CN 113356232 A CN113356232 A CN 113356232A CN 202110732763 A CN202110732763 A CN 202110732763A CN 113356232 A CN113356232 A CN 113356232A
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- profile steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 154
- 239000010959 steel Substances 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention belongs to the technical field of foundation pit supporting, and particularly relates to a supporting method of an assembled profile steel combined foundation pit. After the construction of the SMW construction method pile is completed, the top end of the SMW construction method pile is welded with a steel bar of a crown beam, and then the crown beam is poured; the part of the embedded steel bar in the crown beam, which extends out of the crown beam, is spot-welded with a steel bar connector, and the steel bar connector is connected with the profile steel purlin through a screw; welding a profile steel bracket on one side of the embedded steel plate, mounting a profile steel support on the top of the profile steel bracket, and connecting the profile steel support with the profile steel purlin by using bolts; arranging a steel support triangular piece at the oblique intersection of the profile steel support and the profile steel purlin; set up the shaped steel stand in the central authorities that shaped steel supported, the bottom of shaped steel stand is pre-buried in the bored concrete pile, and the pre-buried steel bar welding that bracket and shaped steel supported passes through high strength bolt connection between crossbeam and every shaped steel support. The invention has low cost and easy quality control, and greatly reduces energy consumption; the construction space is reduced, the construction efficiency is improved, the construction speed is high, the stress loss is effectively prevented, and the safety is ensured.
Description
Technical Field
The invention belongs to the technical field of foundation pit supporting, and particularly relates to a supporting method of an assembled profile steel combined foundation pit.
Background
Aiming at the construction environment with complex surrounding environment, the existing enclosure structure can not be used. For example, the total area of a certain project of the warehouse constructed by the applicant is 18500 square meters, the peripheral environment is complex, the warehouse is close to the existing buildings, is a dense area of residents in the city center, the construction period is short, and the geological condition is complex. The traditional combined enclosing structure of the triaxial mixing pile, the cast-in-place pile and the profile steel enclosing purlin is adopted, so that the construction surface is large, the construction period is long, and the surrounding can not be completely avoided by the existing buildings.
Disclosure of Invention
The invention provides a method for supporting an assembled profile steel combined foundation pit, aiming at solving the difficult problems that the construction surface is narrow, the periphery of the construction surface is the existing building, and the house is densely constructed.
The invention is realized by adopting the following technical scheme: a supporting method of an assembled type section steel combined foundation pit comprises the steps of firstly constructing a pile in an SMW construction method, welding reinforcing steel bars of a crown beam at the top end of the pile in the SMW construction method after the construction of the pile in the SMW construction method is completed, and then pouring the crown beam; pre-embedded steel bars are pre-embedded in the crown beam, part of the pre-embedded steel bars extending out of the crown beam is spot-welded with a steel bar connector, and the steel bar connector is connected with the profile steel purlin through a screw; one side of the SMW construction method pile is pre-embedded with an embedded steel plate, one side of the embedded steel plate is welded with a profile steel bracket, a profile steel support is installed at the top of the profile steel bracket, and the profile steel support is connected with a profile steel purlin by bolts; arranging a steel support triangular piece at the oblique intersection of the profile steel support and the profile steel purlin, and anchoring embedded steel bars of the steel support triangular piece into the crown beam; set up the shaped steel stand at the central authorities that shaped steel supported, the bottom of shaped steel stand is pre-buried in the bored concrete pile, sets up stagnant water piece, crossbeam and bracket on shaped steel supports, and the bracket welds with the pre-buried reinforcing bar that shaped steel supported, supports between crossbeam and every shaped steel through high strength bolt connection.
Furthermore, each limb steel supported by the steel section is connected with a cover plate.
Furthermore, the bracket is connected with the embedded steel bar supported by the section steel by fillet welding, and the height of the welding seam is 6 mm.
Further, the shaped steel supports for the H shaped steel of seting up a plurality of screw holes.
Furthermore, the cross beam is connected with each section steel support by at least two high-strength bolts.
Furthermore, the embedded steel bars of the steel support triangular parts are anchored into the crown beam by 300 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the method has the advantages of low manufacturing cost, easy quality control, great reduction of energy consumption and construction waste, and higher social and economic benefits and environmental protection;
2. according to the construction method, the SMW construction method is adopted to support the section steel by the piles, and the section steel upright column is arranged in the center of the section steel support, so that the construction space is reduced, the construction efficiency is improved, the construction speed is high, the waterproof and anti-permeability effects are good, the stress loss is effectively prevented, the efficiency is improved, and the safety is ensured, so that the construction method has a wide application prospect; the method is particularly suitable for construction projects with narrow construction surfaces, existing buildings around the construction projects, dense houses and tight construction period.
Drawings
FIG. 1 is a construction plan view;
FIG. 2 is a schematic connection diagram of a crown beam, a profile steel purlin and a profile steel support;
FIG. 3 is a schematic view of a section steel column;
FIG. 4 is a schematic view of a steel support triangle;
FIG. 5 is a schematic view of pre-buried steel bars;
FIG. 6 is a schematic view of a section steel support;
FIG. 7 is a schematic view of a cover plate;
FIG. 8 is a schematic view of connection of section steel and a section steel purlin;
in the figure: the method comprises the following steps of 1-SMW construction method piles, 2-crown beams, 3-section steel purlins, 4-section steel supports, 5-section steel brackets, 6-section steel columns, 7-cross beams, 8-brackets, 9-water stop sheets, 10-cast-in-place piles, 11-steel support triangular pieces, 12-cover plates, 13-embedded steel plates, 14-steel bar connectors, 15-embedded steel bars, 16-screws and 17-bolts.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1 to 8, the present invention provides a technical solution: a supporting method of an assembled type section steel combined foundation pit comprises the steps of firstly constructing a pile 1 in an SMW construction method, welding reinforcing steel bars of a crown beam 2 at the top end of the pile 1 in the SMW construction method after the construction is finished, and then pouring the crown beam 2; pre-embedded steel bars 15 are pre-embedded in the crown beam 2, a part of the pre-embedded steel bars 15 extending out of the crown beam 2 is spot-welded with a steel bar connector 14, and the steel bar connector 14 is connected with the profile steel surrounding purlin 3 through a screw 16; an embedded steel plate 13 is embedded in one side of the SMW construction method pile 1, a profile steel bracket 5 is welded on one side of the embedded steel plate 13, a profile steel support 4 is installed at the top of the profile steel bracket 5, and the profile steel support 4 is connected with a profile steel surrounding purlin 3 through bolts; arranging a steel support triangular piece 11 at the oblique intersection of the profile steel support 4 and the profile steel purlin 3, and anchoring embedded steel bars of the steel support triangular piece 11 into the crown beam 2; set up shaped steel stand 6 at the central authorities that shaped steel supported 4, the bottom of shaped steel stand 6 is pre-buried in bored concrete pile 10, sets up stagnant water piece 9, crossbeam 7 and bracket 8 on shaped steel supports 4, and bracket 8 and shaped steel support 4's embedded reinforcement welding pass through high strength bolt between crossbeam 7 and every shaped steel support 4.
A cover plate 12 is connected to each limb steel of the steel section support 4.
The bracket 8 is connected with the embedded steel bar of the section steel support 4 by fillet weld, and the height of the weld is 6 mm.
The section steel support 4 is H-shaped steel provided with a plurality of threaded holes.
The cross beam 7 is connected with each section steel support 4 by at least two high-strength bolts.
The embedded steel bars of the steel support triangular piece 11 are anchored into the crown beam by 2300 mm.
The embedded steel bars 15 in the crown beam 2 are HRB400E with the diameter of 25 mm.
The cross beam 7 and the bracket 8 are made of H300X 10X 15 section steel.
The reinforcing bar connector 14 is M24 × 70; the screw 16 is M24 × 60.
The bolt for connecting the section steel support 4 and the section steel purlin 3 is M24 & 80.
The section steel support 4 adopts standard parts, has the size of 4-12m, and can be pre-assembled in advance according to the actual situation on site.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The assembled profile steel combined foundation pit supporting method is characterized by comprising the following steps of: firstly, constructing a pile (1) in an SMW construction method, welding a reinforcing steel bar of a crown beam (2) at the top end of the pile (1) in the SMW construction method after the construction is finished, and then pouring the crown beam (2); pre-embedded steel bars (15) are pre-embedded in the crown beam (2), a part of the pre-embedded steel bars (15) extending out of the crown beam (2) is spot-welded with a steel bar connector (14), and the steel bar connector (14) is connected with the profile steel surrounding purlin (3) through a screw (16); an embedded steel plate (13) is embedded in one side of the SMW construction method pile (1), a profile steel bracket (5) is welded on one side of the embedded steel plate (13), a profile steel support (4) is installed at the top of the profile steel bracket (5), and the profile steel support (4) is connected with a profile steel purlin (3) through bolts (17); arranging a steel support triangular piece (11) at the oblique crossing position of the profile steel support (4) and the profile steel purlin (3), and anchoring an embedded steel bar of the steel support triangular piece (11) into the crown beam (2); set up shaped steel stand (6) at the central authorities that shaped steel supported (4), the bottom of shaped steel stand (6) is pre-buried in bored concrete pile (10), sets up stagnant water piece (9), crossbeam (7) and bracket (8) on shaped steel supports (4), and bracket (8) and the pre-buried reinforcing bar welding of shaped steel support (4) pass through high strength bolt between crossbeam (7) and every way shaped steel support (4).
2. The assembled type steel combined foundation pit supporting method according to claim 1, characterized in that: and a cover plate (12) is connected to each limb steel of the section steel support (4).
3. The assembled type steel combined foundation pit supporting method according to claim 1, characterized in that: the bracket (8) is connected with the embedded steel bars of the section steel support (4) through fillet welds, and the height of the welds is 6 mm.
4. The assembled type steel combined foundation pit supporting method according to claim 1, characterized in that: the section steel support (4) is H-shaped steel provided with a plurality of threaded holes.
5. The assembled type steel section combined foundation pit supporting method according to any one of claims 1-4, wherein the method comprises the following steps: the cross beam (7) is connected with each section steel support (4) by at least two high-strength bolts.
6. The assembled type steel combined foundation pit supporting method according to claim 5, wherein the method comprises the following steps: and the embedded steel bars of the steel support triangular piece (11) are anchored into the crown beam (2) by 300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732763.5A CN113356232A (en) | 2021-06-30 | 2021-06-30 | Assembled profile steel combined foundation pit supporting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732763.5A CN113356232A (en) | 2021-06-30 | 2021-06-30 | Assembled profile steel combined foundation pit supporting method |
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| Publication Number | Publication Date |
|---|---|
| CN113356232A true CN113356232A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110732763.5A Pending CN113356232A (en) | 2021-06-30 | 2021-06-30 | Assembled profile steel combined foundation pit supporting method |
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| CN (1) | CN113356232A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020071725A1 (en) * | 2000-12-07 | 2002-06-13 | Jakiel Robert L. | Earth support and permanent structural foundation wall |
| CN102505695A (en) * | 2011-10-09 | 2012-06-20 | 浙江荣邦房地产开发有限公司 | Construction method for deep foundation pit of three-dimensional garage |
| CN102704491A (en) * | 2012-06-11 | 2012-10-03 | 上海强劲地基工程股份有限公司 | Sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and construction method of purlin |
| CN103243722A (en) * | 2012-02-13 | 2013-08-14 | 郑鸿彰 | Construction method of novel inner support of foundation trench |
| CN104790595A (en) * | 2015-05-15 | 2015-07-22 | 山西五建集团有限公司 | Construction method for adjustable tile hanging system of pitched roof |
| CN104947682A (en) * | 2015-05-06 | 2015-09-30 | 中国地质大学（武汉） | Foundation pit support construction method and device thereof |
| CN109610477A (en) * | 2019-01-31 | 2019-04-12 | 上海宝钢工程咨询有限公司 | Large area mud liquid soil layer foundation pit suspension supporting integrated construction structures and methods |
| CN110424411A (en) * | 2019-08-27 | 2019-11-08 | 南京市测绘勘察研究院股份有限公司 | A kind of irregular foundation pit assembled steel support device and its construction and application method |
| CN110485429A (en) * | 2019-03-21 | 2019-11-22 | 安徽省第一建筑工程有限公司 | A kind of prestressing force fashioned iron assembled combination inner support construction method |
-
2021
- 2021-06-30 CN CN202110732763.5A patent/CN113356232A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020071725A1 (en) * | 2000-12-07 | 2002-06-13 | Jakiel Robert L. | Earth support and permanent structural foundation wall |
| CN102505695A (en) * | 2011-10-09 | 2012-06-20 | 浙江荣邦房地产开发有限公司 | Construction method for deep foundation pit of three-dimensional garage |
| CN103243722A (en) * | 2012-02-13 | 2013-08-14 | 郑鸿彰 | Construction method of novel inner support of foundation trench |
| CN102704491A (en) * | 2012-06-11 | 2012-10-03 | 上海强劲地基工程股份有限公司 | Sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and construction method of purlin |
| CN104947682A (en) * | 2015-05-06 | 2015-09-30 | 中国地质大学（武汉） | Foundation pit support construction method and device thereof |
| CN104790595A (en) * | 2015-05-15 | 2015-07-22 | 山西五建集团有限公司 | Construction method for adjustable tile hanging system of pitched roof |
| CN109610477A (en) * | 2019-01-31 | 2019-04-12 | 上海宝钢工程咨询有限公司 | Large area mud liquid soil layer foundation pit suspension supporting integrated construction structures and methods |
| CN110485429A (en) * | 2019-03-21 | 2019-11-22 | 安徽省第一建筑工程有限公司 | A kind of prestressing force fashioned iron assembled combination inner support construction method |
| CN110424411A (en) * | 2019-08-27 | 2019-11-08 | 南京市测绘勘察研究院股份有限公司 | A kind of irregular foundation pit assembled steel support device and its construction and application method |
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Application publication date: 20210907 |
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