CN109763492A - A kind of assembled steel support large span supporting construction and its installation method - Google Patents
A kind of assembled steel support large span supporting construction and its installation method Download PDFInfo
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- CN109763492A CN109763492A CN201910050673.0A CN201910050673A CN109763492A CN 109763492 A CN109763492 A CN 109763492A CN 201910050673 A CN201910050673 A CN 201910050673A CN 109763492 A CN109763492 A CN 109763492A
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Abstract
The invention discloses a kind of assembled steel support large span supporting construction and its installation method, the branch steel support structure by column, joist, triangular key, triangle connection element, cover board, link part, loading device etc. and form；One group can connect support with the eight words support of more sets；One group of length reaches the foundation pit range to support energy supporting span 40m or more of 80m or more；The isosceles right angle trigonometry key of section steel manufacture is used to the connection between support and the support of eight words；It is connected between the support of eight words and purlin by triangle connection element.This layout pattern reduces the quantity to support and column, increases the long stability to support, the economic benefit with environmentally protective social benefit and reduction pattern foundation pit supporting structure cost.
Description
Technical field
The present invention relates to technical field of civil engineering, are specifically related to foundation pit steel support supporting construction and its installation side
Method.
Background technique
In underground space development towards in deep general orientation development process, challenge is proposed to the inner support supporting construction of foundation pit.
Assembling type steel structure support has more advantage, but answering in deep big foundation pit supporting compared with concrete support
With certain limitation is received, it is mainly shown as that the length of bracing members is lower to support stability, supporting span is smaller.It can from Fig. 1
Out, one group to support supporting span, i.e., two are no more than 20m to support the distance between center line, and one group horizontal is made to what support was subject to
It is not matched that with his bearing capacity firmly, that is to say, that under conditions of guaranteeing the long stability requirement to support, his actual bearer
Power is not in full use, and the active force of receiving is much smaller than his bearing capacity, i.e., long more to the quantity demand of support beam, and supporting
Span is smaller, is necessarily directed at support cost and increases.Guarantee longer stability and safety to support, it is necessary to arrange more
Beam and supporting requirement is just able to satisfy to support group number to support.
In order to improve stability and globality compared with long support, it is integral to need for more supporting beams to be combined connection,
Form a stronger truss structure
For the stabilization life compared with long support, existing contradiction between safety and cost, increase by one group to supporting beam in support
Quantity, while increasing one group of horizontal supporting span to support, thus can be reduced the quantity to the group number and column of support, thus
Achieve the purpose that reduce cost, increase and excavate space, improve speed of application, this is also that engineering circles technology in the urgent need to address is difficult
Topic.
Summary of the invention
Technical problem to be solved by the present invention lies in overcome problems of the prior art, provide a kind of assembly
Formula bracing members large span supporting construction and its installation method.
A kind of assembled steel supports large span supporting construction, is one or more groups of to support bearing by one group
The compositions such as eight word supports, triangular key, triangle connection element, cover board, connection part, column, joist；
The large span supporting construction be one group to the length of support reach 80m or more, supporting horizontal span up to 40m with
On support construction；
Described one layer supports beam, prestressing force loading device, triangular key, cover board and connection by more H profile steels to support
Tie member composition；
Described one group is independent from each other the supporting region of support；Support can be arranged in orthogonal space, it is orthogonal to support
It is offset from each other on absolute altitude, stress is mutually indepedent.
Described one group is made of support one layer or more of supporting beam, and every layer is set to same mark to support and the support of a set of eight word
Gao Shang；
The isosceles right angle trigonometry key that section steel manufacture is used to the connection between support and the support of eight words；
One group or more of horizontal connection part is set between a set of eight word support；
It is connected between the eight words support and purlin by triangle connection element；
Described one group is made of support 1~3 layer of supporting beam overlapping, shares column and joist；Every layer to support and triangular key
Between be equipped with prestressing force loading device；
The multilayer is linked together between support by U-shaped card and joist；Supporting beam in the same plane is by covering
What plate and oblique connector were combined；
The triangle connection element connected between the eight words support and purlin is steel construction or reinforced concrete structure；
It is provided with large-span prestressed arc arched girder between a set of eight word support, using on eight words support both ends fulcrum
Triangle connection element is prestressed cable retainingf key, is locked the tensioning cable on arc arched girder by the retainingf key.
The triangle connection element is mounted on arc arched girder both ends, and porous guiding is provided in prestressed cable retainingf key
Block keeps cable wire mutually isolated when passing through porous guide pad.
A kind of installation method of the assembled steel support large span supporting construction, specific steps are as follows:
(1) column, bracket and joist are first installed；
(2) arrangement supports support, triangular key and eight words on joist；
(3) triangular key is arranged between supporting beam and the support of eight words；The top surface installation cover board and connection part of support on upper layer,
The bottom surface installation cover board and connection part of lower layer support；
It (4) will support and the constraint of joist installation U-shaped card；
(5) applying prestressed sequence is upper layer support after first lower layer support；
(6) it supports after filling up prestressing force, then the supporting beam of upper and lower level is connected, lower layer support beam has been connect with joist
Come.
The utility model has the advantages that a kind of assembled steel support large span supporting construction solves the problems, such as large span pattern foundation pit supporting structure, fill out
The supporting span for having mended one group of bracing members is more than the blank of 40m or more, compared with prior art, improves steel construction ultra-long support
Safety and stability, reduce project cost, have environmentally protective social value and substantial economics.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments；
Fig. 1 is traditional to support and a set of eight word support plane of arrangement schematic diagram.
Fig. 2 is the supporting floor map constituted to support with the support of a set of eight word and arc arched girder.
Fig. 3 is two layers of supporting floor map constituted to support with two set of eight word support.
Fig. 4 is the supporting floor map that two pairs of supports are constituted with two set of eight word support and arc arched girder
Fig. 5 is three layers of supporting floor map constituted to support with three set of eight word support.
Fig. 6 is prestressed cable retainingf key structural schematic diagram.
Fig. 7 is the porous guide pad schematic three dimensional views of prestressed cable.
Fig. 8 is the combination diagram of triangular key and prestressing force loading device
Fig. 9 is the quadrature arrangement schematic diagram combined with the support of eight words to support
Figure 10 is the quadrature arrangement schematic diagram to support and eight words support and arc hybrid structure of arch and beam
In figure: 1--- shores support, 11-upper layers to support, 12-lower layers to support, 13-middle layers to support, 14-, eight word of 2--
Support, the support of 21-upper layer, eight word, the support of 22-lower layer, eight word, the support of 23-middle layer, eight word, 3--- triangular key, the upper layer 31-- triangular key,
32-lower layer's triangular keys, 33-middle layer triangular keys, 4-- triangle connection element, 41--cover board, 42-- connection part, 43-attachment beams,
44---U shape card, 45-prestressed cable retainingf keys, 46-prestressed cables are oriented to porous block, and 5-- column, 51--- joist, 6-add
It carries and sets, the upper layer 61-- loading device, 62-lower layer's loading devices, 63-middle layer loading devices, 7-arc arched girders, 8-is vertical
Go along with sb. to guard him piling wall, 9-purlins.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
In order to absolutely prove assembled large-span steel support construction and its installation method, combination schematic diagram is retouched
It states.
The supporting plane of the present invention that support is constituted with the support of a set of eight word and arc arched girder, as shown in Fig. 2, this kind of branch
Protection structure is mainly formed by supportting 2, triangular key 3 and arc arched girder 7 etc. to support 1 and eight words, is set to the inside of vertical enclosure wall 8,
Complete foundation pit supporting system is formed by purlin 9 and the supporting construction.
The bending stiffness of large span purlin 9 between eight words support 2 is provided by a large-span prestressed arc arched girder 7
's；Realize that one group improves a lot to the supporting span of support, can achieve 40m~50m.
Arc arched girder 7 is being disposed with prestressed cable retainingf key 45 with eight words support, 2 junctions, and eight words support 2 pairs of arc arched girders
7 provide support, by applying prestressing force to prestressed cable and locking, form the arc arched girder 7 of a large span high rigidity.?
The porous guide pad 46 of prestressed cable is disposed in prestressed cable retainingf key 45, as shown in Figure 6.
The structure of the porous guide pad 46 of prestressed cable is as shown in fig. 7, every prestressed cable passes through porous guide pad 46
One hole, keeps prestressed cable mutually isolated, to eliminate the friction force between them.
Support 1 and eight words support 2 are all made of more H profile steel beams, cover board 41, connection part 42,43 and of attachment beam are passed through
More H profile steel beams are combined into truss structure by U-shaped card 44.
Support 1 and eight words support 2 are connect by bracket 51, joist 52 with column 5, realize that supporting beam is opposite with ground stratum solid
It is fixed, vertical and sidewise restraint is provided to supporting beam.
It is provided with loading device 6 in support 1, applies prestressing force to support steel beam, to eliminate the initial deformation of bracing members
Improve his support rigidity.
When being greater than the long side of standard triangular key 3 to the width of support 1, one or more upper H-type is spelled on standard triangle 3
Steel standard component, is connected with high-strength bolt, expands the side length of standard triangular key 3.
The two layers of the present invention supporting plane that support is constituted with two set of eight word support, as shown in Figure 3.Supporting construction master
Will be by upper layer to support 11 and eight word of upper layer support 21, lower layer is to support 12 and eight word of lower layer support 13 and upper layer triangular key 31 and lower layer three
The composition such as corner key 32.
Upper layer is to support 11 and eight word of upper layer support 21 and upper layer triangular key 31 and upper layer loading device 61, and lower layer is to support 12 under
Eight word of layer support 22 and lower layer's triangular key 32 and lower layer's loading device 62, respectively constitute upper and lower two layers of support construction, have shared big
Part column 5 and bracket 51, joist 52.It is connected between upper and lower layer supporting beam by U-shaped card 44, can be relatively moved along axial.
Eight word of upper layer support 21 and purlin 9 between by upper layer triangle connection element 4 connect, eight word of lower layer support 22 with purlin 9 it
Between by lower layer's triangle connection element 4 connect；It is arranged one at the top of lower layer's triangular key 32 and shores 14,9 offer effect of purlin is provided
Power is realized and is greatly improved to one group that support forms to the supporting span of support by upper and lower two layers, can achieve 40m~50m.
The two layers of the present invention supporting plane that support is constituted with two set of eight word support and arc arched girder, as shown in figure 4,
This kind of supporting construction is mainly by upper layer to support 11 and eight word of upper layer support 21, and lower layer is to support 12 and eight word of lower layer support 22 and upper layer three
Corner key 31 and the composition such as lower layer's triangular key 32 and arc arched girder 7.
The bending stiffness of large span purlin 9 is provided by a prestressed arc-shape arched girder 7 between eight word of lower layer support 22
's；Realize that one group further increases the supporting range of support, can achieve 50m~80m.
The three layers of the present invention supporting plane that support is constituted with three set of eight word support, as shown in Figure 5.This kind of supporting construction master
Will be by upper layer to support 11 and eight word of upper layer support 21, lower layer is to support 12 with eight word of lower layer support 22, middle layer to support 13 and eight word of middle layer
23, three set of eight word support is formed by upper layer triangular key 31, lower layer's triangular key 32 and middle layer triangular key 33 etc., support is constituted with one group
Support construction.
Upper layer is to support 11 and eight word of upper layer support 21 and upper layer triangular key 31, upper layer loading device 61, and lower layer is to support 12 under
Eight word of layer support 22 and lower layer's triangular key 32 and lower layer's loading device 62, middle layer is to support 13 and eight word of middle layer support 23 and lower layer's triangle
Key 33, lower layer's loading device 63 respectively constitute the support construction of upper, middle and lower layer, have shared most of column 5 and bracket 51, support
Beam 52.It is connected between the layer supporting beam of upper, middle and lower by U-shaped card 44, can be relatively moved along axial.
Fig. 9 and Figure 10 show it is of the present invention to support in orthogonal space arrangement schematic diagram, it can be seen from the figure that orthogonal
To support spatially intersection be staggered, stress is mutually indepedent.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel only illustrate the present invention it should be appreciated that the present invention is not limited by examples detailed above described in examples detailed above and specification
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its is equal
Object circle.
Claims (9)
1. a kind of assembled steel supports large span supporting construction, characterized in that one group is being formed by stacking to support by multilayer to support；
One group is connected with the eight words support of more set to support, and every layer only connects a set of eight word to support and supports, one layer to support only with it is coplanar on it is a set of
The support connection of eight words；One layer is made of support more H profile steel supporting beams, a set of prestressing force loading device and a triangular key；One
Group reaches the foundation pit that 80m or more energy supporting span reaches 40m range above to support length；One group is mutually solely to the supporting region of support
Vertical；To support can on the different level position of space it is mutually orthogonal and to stress between support it is mutually indepedent；It is supportted with eight words to support
Between connection use section steel manufacture isosceles right angle trigonometry key；It is linked together between the support of eight words and purlin by triangle connection element.
2. a kind of assembled steel according to claim 1 supports large span supporting construction, characterized in that one group to more in support
Layer supporting beam shares column and joist；Every layer between support and triangular key be equipped with prestressing force loading device.
3. a kind of assembled steel according to claim 1 supports large span supporting construction, characterized in that the size of triangular key
By H profile steel standard component one assembled or more on three sides, it is connected and fixed to form the three of a larger size with high-strength bolt
Corner key, to adapt to the increase to support and eight words support width.
4. a kind of assembled steel according to claim 1 supports large span supporting construction, it is characterized in that multilayer is between support
It is linked together by U-shaped card and joist；Supporting beam in the same plane is combined by cover board and connection part.
5. a kind of assembled steel according to claim 1 supports large span supporting construction, it is characterized in that the support of eight words and purlin
Between the triangle connection element that connects be steel construction.
6. a kind of assembled steel according to claim 1 supports large span supporting construction, it is characterized in that the support of eight words and purlin
Between the triangle connection element that connects be reinforced concrete structure.
7. a kind of assembled steel according to claim 1 supports large span supporting construction, it is characterized in that a set of eight word supports it
Between a large span arc arched girder is set, eight words support two supports on cable wire retainingf key, and using cable wire retainingf key by arc
Tensioning cable locking on arched girder.
8. a kind of assembled steel according to claim 1 supports large span supporting construction, it is characterized in that arc arched girder both ends
It is provided with porous guide pad in the cable wire retainingf key of installation, keeps cable wire mutually isolated when passing through porous guide pad.
9. a kind of installation method of assembled steel support large span supporting construction according to claim 1, characterized in that tool
The step of body, is as follows:
(1) column and joist are first installed；
(2) it is arranged on joist to support beam, the support of eight words, triangular key and triangle connection element；
(3) triangular key is arranged between supporting beam and the support of eight words；The top surface installation cover board and connection part of support on upper layer, in lower layer
The bottom surface installation cover board and connection part of support；
It (4) will support and joist installation U-shaped card constraint；
(5) applying prestressed sequence is upper layer support after first lower layer support；
(6) it supports after filling up prestressing force, then the supporting beam of upper and lower layer is connected, and links together with joist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811370481 | 2018-11-17 | ||
| CN201811370481X | 2018-11-17 |
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| Publication Number | Publication Date |
|---|---|
| CN109763492A true CN109763492A (en) | 2019-05-17 |
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ID=66454246
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910050673.0A Withdrawn CN109763492A (en) | 2018-11-17 | 2019-01-20 | A kind of assembled steel support large span supporting construction and its installation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846644A (en) * | 2021-08-25 | 2021-12-28 | 东通岩土科技股份有限公司 | Foundation pit steel supporting structure utilizing haunch structure |
| CN113846645A (en) * | 2021-08-25 | 2021-12-28 | 东通岩土科技股份有限公司 | Foundation pit supporting structure utilizing steel side arch structure |
| CN114319370A (en) * | 2021-10-22 | 2022-04-12 | 中铁四局集团第五工程有限公司 | Mounting method of underground two-layer assembled type prestress profile steel combined support |
-
2019
- 2019-01-20 CN CN201910050673.0A patent/CN109763492A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846644A (en) * | 2021-08-25 | 2021-12-28 | 东通岩土科技股份有限公司 | Foundation pit steel supporting structure utilizing haunch structure |
| CN113846645A (en) * | 2021-08-25 | 2021-12-28 | 东通岩土科技股份有限公司 | Foundation pit supporting structure utilizing steel side arch structure |
| CN113846645B (en) * | 2021-08-25 | 2022-12-16 | 东通岩土科技股份有限公司 | Foundation pit supporting structure utilizing steel side arch structure |
| CN114319370A (en) * | 2021-10-22 | 2022-04-12 | 中铁四局集团第五工程有限公司 | Mounting method of underground two-layer assembled type prestress profile steel combined support |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190517 |