CN102704491A - Sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and construction method of purlin - Google Patents
Sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and construction method of purlin Download PDFInfo
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- CN102704491A CN102704491A CN2012101911690A CN201210191169A CN102704491A CN 102704491 A CN102704491 A CN 102704491A CN 2012101911690 A CN2012101911690 A CN 2012101911690A CN 201210191169 A CN201210191169 A CN 201210191169A CN 102704491 A CN102704491 A CN 102704491A
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Abstract
The invention relates to a sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and a construction method of the purlin. Sectional steel and reinforced concrete beams are horizontally overlapped and placed and are connected through embedded connecting screw bolts for forming the novel combination surrounding purlin. The stress surface of the surrounding purlini is increased so that the stress of the concrete beam is dispersed, cracks and damage of the concrete beam are eliminated, the bending resistance intensity of the surrounding purlin and the axial pressure resistance capability of the sectional steel are improved, the deformation of the foundation pit structure is reduced, and the foundation pit engineering safety is improved. The connection and disconnection with an opposite supporter or a corner supporter can also be convenient, the sectional steel recovery is realized, the cyclic utilization is realized, and the goals of low carbon and environment protection of the foundation pit supporting protection are reached.
Description
Technical field
The present invention relates to technical field of civil engineering, the particularly inner supporting structure of pattern foundation pit supporting structure and job practices, and enclose the purlin recycling of materials.
Background technology
In foundation pit supporting construction, interior support supporting and protection structure is commonly used encloses purlin, mainly contains reinforced concrete fortifield village purlin and shaped steel and encloses purlin.Reinforced concrete fortifield village purlin can be combined into an integral body effectively with the campshed body of wall of vertically going along with sb. to guard him in the pattern foundation pit supporting structure, bearing the horizontal water soil pressure, but the construction period is longer, and material is reusable not; Shaped steel encloses purlin and has easy construction, does not need maintenance, and the construction period is short, but gives synthetic whole structure undesirable to vertical fender post.We can say, these two kinds enclose purlin all separately pluses and minuses are arranged.When the spacing of interior support is big, need increase arrangement of reinforcement in the inboard of reinforced concrete fortifield village purlin, could satisfy its flexural strength requirement.The spacing that supports in it is big more, and then the quantity of reinforcement of reinforced concrete fortifield village purlin is just high more, thereby will increase material cost greatly.The spacing that supports in increasing is the developing direction of foundation pit supporting project, because the quantity that supports in can not only reducing like this, and can increase the inner construction space of foundation ditch, improve the speed of application of foundation ditch.In order to improve the bending resistance of enclosing purlin, H shaped steel and reinforced concrete beam be combined into enclose purlin, so both can reduce the consumption of reinforcing bar, can the recycling of H shaped steel be realized the target of energy-saving and emission-reduction again.
Summary of the invention
Technical problem to be solved by this invention is, the braced structures that overcomes existing pattern foundation pit supporting structure enclose the purlin flexural strength low, with support or angle brace are connected shortcomings such as inconvenience, provides a kind of shaped steel and reinforced concrete beam to make up and enclose purlin, and the job practices of purlin is enclosed in this combination.Shaped steel and reinforced concrete beam be combined into enclose purlin, both can be connected to support or angle brace with shaped steel easily, can be connected to support or angle brace with steel concrete easily again.
In order to address the above problem, technical scheme of the present invention is such:
A kind of shaped steel and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, shaped steel and reinforced concrete beam level are stacked together; Reinforced concrete beam links to each other with vertical fender post; Be provided with pre-buried connecting bolt in the reinforced concrete beam, on two side wing edges of shaped steel, by a determining deviation a plurality of bolts hole that distribute; The bolt hole of shaped steel one side is used to connect pre-buried connecting bolt; The bolt hole of opposite side is used to connect the interior support of pattern foundation pit supporting structure, and the bolt hole that pre-buried connecting bolt passes on shaped steel one side wing edge is fastening through detachable nut, removes nut and can shaped steel be reclaimed.
Described shaped steel is H shaped steel.
H shaped steel is multilayer.H shaped steel H vertically stacks.
H shaped steel and concrete beam contact surface are provided with separation layer.Separation layer is asphaltic felt or paper or braid etc.
H shaped steel cross section is a square.
Pre-embedded bolt is high-strength friction bolt.
The bolt hole that pre-buried connecting bolt passes on H shaped steel one side wing edge is fastening through detachable nut.
Pre-buried connecting bolt in reinforced concrete beam is yi word pattern, L type or U type.
Pre-buried connecting bolt in the reinforced concrete beam links to each other with the muscle in the reinforced concrete beam.
Be provided with the triangle bracket in the bottom of enclosing purlin, bracket evenly distributes along enclosing the inboard horizontal direction of purlin.
H shaped steel is that frame is placed on the triangle bracket.
Fender post is vertical bored pile or the stake of SMW worker's method, and it is whole that shaped steel and reinforced concrete beam and vertical bored pile or the stake of SMW worker's method are combined into a supporting.
The job practices that a kind of shaped steel and reinforced concrete beam combined foundation ditch support enclose purlin is characterized in that,
1), and places pre-buried connecting bolt simultaneously at the reinforcing bar that encloses assembling reinforcement concrete beam on the position of purlin;
2) pre-buried connecting bolt one end is linked to each other with H shaped steel, the other end links to each other with reinforcing bar in the reinforced concrete beam;
3) outside shuttering of reinforced concrete beam, the inboard of reinforced concrete beam utilizes H shaped steel to make template, concreting, and maintenance certain hour, reach desired strength after, with the pre-buried connecting bolt of nut screwing clamping, shaped steel is connected together with reinforced concrete beam.
Step 2) in, enclosing on the position of purlin, the triangle bracket is installed, the shaped steel frame is placed on the bracket;
4) in the step, increase separation layer.
Before the step 1) construction, strip out the muscle in the fender post earlier, the reinforcing bar of reinforced concrete beam is connected with the muscle of fender post, and connected mode is welding or colligation connection.
Step 2) before the construction, along enclosing the purlin position, the soil layer of excavating earlier in the foundation ditch forms a ditch mortise, so that the triangle bracket is installed.
In the step 3), pre-buried connecting bolt links to each other with reinforcing bar in the reinforced concrete beam, and connected mode connects for welding or colligation.
In the step 4), before the concreting, the bolt hole on the H shaped steel is sealed with clay.
After engineering finished, the attaching nut who turns on H shaped steel and reinforced concrete beam utilized jacking device that H shaped steel and reinforced concrete beam are thrown off, and H shaped steel is hung out recycling.
The jacking device level is installed in the H shaped steel, and jacking device one end withstands on the pre-buried bolt, and the other end withstands on the edge of a wing of H shaped steel, starts jacking device, and pre-buried bolt conduct is activity supporting point not, and jacking device backs down H shaped steel at leisure from the reinforced concrete soil body.
Beneficial effect, this enclose purlin have flexural strength big, with to support or angle brace advantage such as multiplexing easy to connect, recyclable, reached the reduction of erection time, reduced the purpose of construction costs.
Description of drawings
Specify the present invention below in conjunction with the accompanying drawing and the specific embodiment;
Fig. 1 encloses purlin for a kind of H shaped steel and steel concrete combination that of the present invention and vertical bored pile enclosure wall combines.
Fig. 2 encloses purlin for a kind of H shaped steel and steel concrete combination that according to the invention and vertical SMW worker's method stake enclosure wall combines.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1 or Fig. 2, purlin is enclosed in this kind H shaped steel and steel concrete combination, comprises a H shaped steel 1, and reinforced concrete beam 2 and pre-buried connecting bolt 4 have bolt hole 3 on the shaped steel.H shaped steel 1 is stacked together with reinforced concrete beam 2 levels, is provided with pre-buried connecting bolt 4 in the reinforced concrete beam 2, and H shaped steel 1 links together through pre-buried connecting bolt and reinforced concrete beam.Pre-buried connecting bolt 4 is in-line, L shaped or U-shaped, with increase and concrete bonding plane, and conveniently is connected with the main muscle of reinforced concrete beam.This combination is enclosed purlin and is not only had higher flexural strength and horizontal anti-pressure ability, and can be convenient with support or angle brace are linked to each other or remove, H shaped steel can conveniently reclaim and reuse, and reaches the purpose of the low-carbon environment-friendly of pattern foundation pit supporting structure.
On two side wing edges of H shaped steel 1, be used to connect pre-buried connecting bolt 4 by the distribute bolt hole of a plurality of bolt hole 3, one sides of a determining deviation, the bolt hole of opposite side is used to connect angle brace or to support.Bolt hole 3 on the shaped steel is pre-manufactured hole or boring.
The bolt hole that pre-buried connecting bolt 4 passes on H shaped steel one side wing edge is fastening through detachable nut.Tighten the nut on the connecting bolt between H shaped steel 1 and the reinforced concrete beam 2, can increase the frictional force between H shaped steel and the reinforced concrete beam, thereby improved the axial bearing capacity of H shaped steel.
Pre-buried connecting bolt in reinforced concrete beam 2 is yi word pattern, L type or U type, when being L type or U type, can make pre-buried connecting bolt 4 be difficult for deviating to increase pre-embedded bolt and concrete adhesion stress owing to have turning.
Pre-buried connecting bolt 4 in the reinforced concrete beam 2 links to each other with the muscle in the reinforced concrete beam 2.Link to each other with muscle, can increase the uplift resistance of pre-embedded bolt 4, and then make shaped steel have bearing capacity preferably.
Be provided with triangle bracket 6 in the bottom of enclosing purlin, bracket 6 evenly distributes along enclosing the inboard horizontal direction of purlin.H shaped steel 1 is that frame is placed on the triangle bracket 6, so that installing and locating and levelling.Triangle bracket 6 is a right angle triangle.One right-angle side of right-angled triangle carries H shaped steel 1, and another right-angle side of right-angled triangle is the vertical edges of SMW worker's method stake 7, and the hypotenuse of right-angled triangle is a support bar.
Situation when this combination is enclosed purlin and vertically bored pile 5 enclosure walls are combined is referring to Fig. 1; This combination is enclosed situation that purlin combines with vertical SMW worker's method stake 7 enclosure walls referring to Fig. 2.
This enclose purlin have flexural strength big, with to support or angle brace advantage such as multiplexing easy to connect, recyclable, reached the reduction of erection time, reduced the purpose of construction costs.
Concrete job practices is following:
Cut the concrete or the cement-soil of periphery, reserve the space of enclosing purlin; The reinforcing bar of vertical bored pile 5 or the H shaped steel of vertical SMW worker's method stake 7 are stripped out, at reinforcing bar that encloses assembling reinforcement concrete structure on the position of purlin 8 and pre-buried connecting bolt 4.Reinforcing bar 8 and the reinforcing bar of vertical bored pile 5 or the colligation of H shaped steel or the welding of vertical SMW worker's method stake 7.
Along enclosing the purlin position, the soil layer of excavating in the foundation ditch forms a ditch mortise, so that triangle bracket 6 is installed, triangular form bracket 6 is installed, and the battered leg of bracket 6 is supported on vertically goes along with sb. to guard him on the piling wall, 1 of H shaped steel is placed on the bracket 6, so that location and fixing;
Pre-buried connecting bolt 4 one ends link to each other with the bolt hole 3 of H shaped steel 1, and the other end is connected with reinforcing bar 8 in the reinforced concrete fortifield village purlin, and connected mode is colligation or welding;
At the outside shuttering of reinforced concrete fortifield village purlin, the inboard utilizes H shaped steel 1 to make template, and bolt hole 3 usefulness clay are sealed; Concreting, and maintenance is to certain length of time, when reaching designing requirement intensity, with the moment of torsion of the nut screwing clamping on the connecting bolt 4 to designing requirement.
Through above-mentioned steps and job practices, can form the combination of a kind of H shaped steel and steel concrete and enclose purlin, this encloses purlin can not only bear bigger moment of flexure, also can bear higher horizontal axis pressure.
After foundation pit supporting project is accomplished, can follow these steps to accomplish and remove and recycling.
Turn on the attaching nut on H shaped steel 1 and the steel concrete; Level is installed the jacking device of a special use on H shaped steel, and an end withstands on the pre-buried bolt 4, and the other end withstands on the edge of a wing of H shaped steel.
Start jacking device, pre-buried bolt 4 conducts are activity supporting point not, and jacking device backs down H shaped steel 1 at leisure from the reinforced concrete soil body; When pre-embedded bolt 4 during fully with 1 disengagement of H shaped steel, can H shaped steel 1 be hung out, can realize the recycling of H shaped steel 1.
The combination of shaped steel and reinforced concrete beam encloses in purlin and the traditional foundation pit supporting construction that steel work encloses purlin or reinforced concrete fortifield village purlin is compared, and has the following advantages:
1. shaped steel closely links together through pre-embedded bolt and reinforced concrete beam, and stress surface increases, and the crack and the damage of concrete beam are eliminated in the stressed dispersion of concrete beam, reduce the steel concrete consumption.Shaped steel detachably reclaims, and recycles, and energy-conserving and environment-protective reduce material cost.
2. shaped steel closely links to each other through stone bolt with reinforced concrete beam, and harmonious ground co-operation can stop the cripling of shaped steel, and can significantly improve the out-of-plane torsional buckling performance of shaped steel, makes the steel strength of shaped steel be able to give full play to.
3. support through linking to each other with shaped steel, shaped steel effectively dispersed steel supports the local compressive stress of termination, crushes and the excessive deformation of the support that causes in the concrete part of having avoided traditional support part pressure-bearing to cause inadequately.
4. in foundation pit supporting construction; The axle power, moment of flexure, the shearing that enclose purlin are often all very big, through the harmonious ground co-operation of shaped steel and concrete beam, can make the pressurized that encloses the purlin member, cut, receive curved bearing capacity to increase substantially; Steel have promptly been practiced thrift; Reduce the section area of member again, also reduced the distortion of foundation pit supporting construction simultaneously, improved the base pit engineering degree of safety.
5. simultaneously, H shaped steel is in the side of concrete beam, when placing of concrete, can the double as template action, and reduce the consumption of template.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; The present invention does not receive the restriction of above-mentioned instance; That describes in above-mentioned instance and the manual just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (21)
1. shaped steel and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that shaped steel and reinforced concrete beam level are stacked together; Reinforced concrete beam links to each other with vertical fender post; Be provided with pre-buried connecting bolt in the reinforced concrete beam, on two side wing edges of shaped steel, by a determining deviation a plurality of bolts hole that distribute; The bolt hole of shaped steel one side is used to connect pre-buried connecting bolt; The bolt hole of opposite side is used to connect the interior support of pattern foundation pit supporting structure, and the bolt hole that pre-buried connecting bolt passes on shaped steel one side wing edge is fastening through detachable nut, removes nut and can shaped steel be reclaimed.
2. a kind of shaped steel according to claim 1 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, shaped steel is H shaped steel.
3. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that H shaped steel is multilayer.
4. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that H shaped steel and concrete beam contact surface are provided with separation layer.
5. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, H shaped steel cross section is a square.
6. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, pre-embedded bolt is high-strength friction bolt.
7. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that pre-buried connecting bolt pass on H shaped steel one side wing edge bolt hole through detachable nut fastening.
8. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, the pre-buried connecting bolt in reinforced concrete beam is yi word pattern, L type or U type.
9. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, the pre-buried connecting bolt in the reinforced concrete beam links to each other with the muscle in the reinforced concrete beam.
10. a kind of shaped steel according to claim 2 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, are provided with the triangle bracket in the bottom of enclosing purlin, and bracket evenly distributes along enclosing the inboard horizontal direction of purlin.
11. a kind of shaped steel according to claim 7 and reinforced concrete beam combined foundation ditch support enclose purlin, it is characterized in that, H shaped steel is that frame is placed on the triangle bracket.
12. a kind of shaped steel according to claim 1 and reinforced concrete beam combined foundation ditch support enclose purlin; It is characterized in that; Fender post is vertical bored pile or the stake of SMW worker's method, and it is whole that shaped steel and reinforced concrete beam and vertical bored pile or the stake of SMW worker's method are combined into a supporting.
13. the job practices that shaped steel and reinforced concrete beam combined foundation ditch support enclose purlin is characterized in that,
1), and places pre-buried connecting bolt simultaneously at the reinforcing bar that encloses assembling reinforcement concrete beam on the position of purlin;
2) pre-buried connecting bolt one end is linked to each other with H shaped steel, the other end links to each other with reinforcing bar in the reinforced concrete beam;
3) outside shuttering of reinforced concrete beam, the inboard of reinforced concrete beam utilizes H shaped steel to make template, concreting, and maintenance certain hour, reach desired strength after, with the pre-buried connecting bolt of nut screwing clamping, shaped steel is connected together with reinforced concrete beam.
14. the job practices that a kind of shaped steel according to claim 13 and reinforced concrete beam combined foundation ditch support enclose purlin is characterized in that step 2) in, enclosing on the position of purlin, the triangle bracket is installed, the shaped steel frame is placed on the bracket;
15. the job practices that a kind of shaped steel according to claim 13 and reinforced concrete beam combined foundation ditch support enclose purlin is characterized in that 4) in the step, increase separation layer.
16. the job practices that a kind of shaped steel according to claim 13 and reinforced concrete beam combined foundation ditch support enclose purlin; It is characterized in that, before the step 1) construction, strip out the muscle in the fender post earlier; The reinforcing bar of reinforced concrete beam is connected with the muscle of fender post, and connected mode is welding or colligation connection.
17. the job practices that a kind of shaped steel according to claim 14 and reinforced concrete beam combined foundation ditch support enclose purlin is characterized in that step 2) before the construction, along enclosing the purlin position, the soil layer of excavating earlier in the foundation ditch forms a ditch mortise, so that the triangle bracket is installed.
18. the job practices that a kind of shaped steel according to claim 13 and reinforced concrete beam combined foundation ditch support enclose purlin is characterized in that, in the step 3), pre-buried connecting bolt links to each other with reinforcing bar in the reinforced concrete beam, and connected mode connects for welding or colligation.
19. the job practices that a kind of shaped steel according to claim 13 and reinforced concrete beam combined foundation ditch support enclose purlin is characterized in that, in the step 4), before the concreting, with clay the bolt hole on the H shaped steel is sealed.
20. the job practices that a kind of shaped steel according to claim 13 and reinforced concrete beam combined foundation ditch support enclose purlin; It is characterized in that; After engineering finishes; Turn on the attaching nut of H shaped steel and reinforced concrete beam, utilize jacking device that H shaped steel and reinforced concrete beam are thrown off, H shaped steel is hung out recycling.
21. the job practices that a kind of shaped steel according to claim 20 and reinforced concrete beam combined foundation ditch support enclose purlin; It is characterized in that the jacking device level is installed in the H shaped steel, jacking device one end withstands on the pre-buried bolt; The other end withstands on the edge of a wing of H shaped steel; Start jacking device, pre-buried bolt conduct is activity supporting point not, and jacking device backs down H shaped steel at leisure from the reinforced concrete soil body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210191169 CN102704491B (en) | 2012-06-11 | 2012-06-11 | Sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and construction method of purlin |
| HK13102565.6A HK1175507A1 (en) | 2012-06-11 | 2013-02-28 | Foundation pit support purlin formed by the combination of structural steels and reinforced concrete beams and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210191169 CN102704491B (en) | 2012-06-11 | 2012-06-11 | Sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and construction method of purlin |
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| Publication Number | Publication Date |
|---|---|
| CN102704491A true CN102704491A (en) | 2012-10-03 |
| CN102704491B CN102704491B (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210191169 Active CN102704491B (en) | 2012-06-11 | 2012-06-11 | Sectional steel and reinforced concrete beam combination foundation pit supporting protection surrounding purlin and construction method of purlin |
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| CN (1) | CN102704491B (en) |
| HK (1) | HK1175507A1 (en) |
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| CN102943481A (en) * | 2012-12-12 | 2013-02-27 | 上海强劲地基工程股份有限公司 | Reinforced concrete beam and steel beam combined connecting structure for foundation pit supporting and construction method thereof |
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| CN107386299A (en) * | 2017-08-21 | 2017-11-24 | 中国二十冶集团有限公司 | Foundation ditch supports concrete construction method |
| CN108755705A (en) * | 2018-07-12 | 2018-11-06 | 中国建筑第八工程局有限公司 | Exempt from branch die combination purlin and its construction method |
| CN109235663A (en) * | 2018-10-25 | 2019-01-18 | 安徽建筑大学 | High-strength threaded bolt assembly type connecting node |
| CN109706939A (en) * | 2019-01-14 | 2019-05-03 | 杭州江润科技有限公司 | Deep basal pit prestressing combination bracing members and construction method |
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| CN102943481A (en) * | 2012-12-12 | 2013-02-27 | 上海强劲地基工程股份有限公司 | Reinforced concrete beam and steel beam combined connecting structure for foundation pit supporting and construction method thereof |
| CN103161169A (en) * | 2013-03-13 | 2013-06-19 | 上海强劲地基工程股份有限公司 | Prestressed girder for foundation pit supporting |
| CN103161169B (en) * | 2013-03-13 | 2015-06-17 | 上海强劲地基工程股份有限公司 | Prestressed girder for foundation pit supporting |
| CN103216085B (en) * | 2013-05-14 | 2018-04-27 | 华东建筑设计研究院有限公司 | A kind of removable lining self-bearing type reinforcement bar truss mould plate |
| CN103216085A (en) * | 2013-05-14 | 2013-07-24 | 华东建筑设计研究院有限公司 | Detachable self-supporting type steel bar truss formwork |
| CN103290851A (en) * | 2013-06-28 | 2013-09-11 | 上海强劲地基工程股份有限公司 | Prestressed steel support used for controlling internal and external differential displacement of foundation pit enclosure wall and construction method |
| CN103290851B (en) * | 2013-06-28 | 2015-05-20 | 上海强劲地基工程股份有限公司 | Prestressed steel support used for controlling internal and external differential displacement of foundation pit enclosure wall and construction method |
| CN103397643A (en) * | 2013-07-26 | 2013-11-20 | 浙江博雷重型机床制造有限公司 | Connector for internal supporting system for integral prestress fabricated foundation pit support |
| CN103882868A (en) * | 2014-03-11 | 2014-06-25 | 中国建筑第八工程局有限公司 | Single-side formwork erecting structure for enclosing purlin in cast-in-pace pile enclosing protection and constructing method |
| CN107386299A (en) * | 2017-08-21 | 2017-11-24 | 中国二十冶集团有限公司 | Foundation ditch supports concrete construction method |
| CN108755705A (en) * | 2018-07-12 | 2018-11-06 | 中国建筑第八工程局有限公司 | Exempt from branch die combination purlin and its construction method |
| CN109235663A (en) * | 2018-10-25 | 2019-01-18 | 安徽建筑大学 | High-strength threaded bolt assembly type connecting node |
| CN109706939A (en) * | 2019-01-14 | 2019-05-03 | 杭州江润科技有限公司 | Deep basal pit prestressing combination bracing members and construction method |
| CN109706939B (en) * | 2019-01-14 | 2020-09-15 | 杭州江润科技有限公司 | Deep foundation pit prestress combined steel support and construction 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 |
| CN113356232A (en) * | 2021-06-30 | 2021-09-07 | 山西五建集团有限公司 | Assembled profile steel combined foundation pit supporting method |
| CN115305927A (en) * | 2022-09-07 | 2022-11-08 | 中建八局第三建设有限公司 | Construction method for splicing concrete support and IPS support |
| CN116163313A (en) * | 2022-11-23 | 2023-05-26 | 北方工业大学 | Connection structure of foundation pit section steel support and enclosure structure and construction method |
| CN116163313B (en) * | 2022-11-23 | 2024-02-23 | 北方工业大学 | Connection structure of foundation pit section steel support and enclosure structure and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102704491B (en) | 2013-05-15 |
| HK1175507A1 (en) | 2013-07-05 |
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