CN202755370U - Structure for improving rigidity and stability of foundation pit steel support - Google Patents
Structure for improving rigidity and stability of foundation pit steel support Download PDFInfo
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- CN202755370U CN202755370U CN 201220496803 CN201220496803U CN202755370U CN 202755370 U CN202755370 U CN 202755370U CN 201220496803 CN201220496803 CN 201220496803 CN 201220496803 U CN201220496803 U CN 201220496803U CN 202755370 U CN202755370 U CN 202755370U
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Abstract
The utility model provides a structure for improving rigidity and stability of a foundation pit steel support. A plurality of fish-belly sill enclosing purlins are arranged on the surrounding of a foundation pit, section steel bracings for connecting the fish-belly sill enclosing purlins are arranged in the middle of the foundation pit, and edge corners of the foundation pit are provided with section steel angle braces for connecting the fish-belly sill enclosing purlins. The section steel bracings or the section steel angle braces are constituted by more than two parallel section steels, and the section steels are connected with each other through bolts in the length direction. The structure is characterized in that transverse and inclined fixing plates are arranged on the parallel section steels in the width direction, and the fixing plates are connected with the section steels through bolts. The transverse fixing plates and the inclined fixing plates form triangular stable structures together with the section steels. The structure for improving the rigidity and the stability of the foundation pit steel support has the advantages of large structural rigidity, good stability, small foundation pit deformation, convenience in construction, and recyclable materials and the like, and the purposes of reducing construction period and lowering the construction cost are achieved.
Description
Technical field
The utility model relates to technical field of civil engineering, particularly pattern foundation pit supporting structure inner supporting structure, particularly a kind of structure that improves foundation ditch steel support stiffness and stability.
Background technology
In foundation pit supporting construction, inner support supporting and protection structure is commonly used to be supported, and mainly contains reinforced concrete support and steel pipe support.Existing shaped steel inner support is generally steel pipe support, and its diameter of steel pipe support is fixed, and bearing capacity can not arbitrarily be regulated, and in the face of the foundation ditch of various complicated shapes, the bearing capacity of its support is difficult to coincide and adapts to, and the situation of the support waste of large bearing capacity usually can occur.
For this reason people's utility model the shaped steel inner support, type steel support comprises that type steel support forms brace summer by many shaped steel arranged side by side to support and diagonal brace, the type steel support two ends with enclose purlin and be connected.Many shaped steel parallel arranged must a kind of steel beam structure of development and Design guarantee the stability between the shaped steel, and then guarantee the safety of construction.
The utility model content
Technical problem to be solved in the utility model is, overcomes the problem that exists in the existing pattern foundation pit supporting structure Shaped Steel braced structures stability, and a kind of structure that improves foundation ditch steel support stiffness and stability is provided.
In order to address the above problem, the technical solution of the utility model is such:
A kind of structure that improves foundation ditch steel support stiffness and stability is provided with a plurality of fish belly sills around the foundation ditch and encloses purlin, and the foundation ditch middle part is provided with and connects shaped steel that fish belly sill encloses purlin to support, and the foundation ditch corner is provided with and connects the shape steel diagonal supporting that fish belly sill encloses purlin; Shaped steel is made of many shaped steel side by side to support or shape steel diagonal supporting, bolt connects on the shaped steel length direction, it is characterized in that, be provided with horizontal and oblique fixed head on the shaped steel width side by side, fixed head is bolted on shaped steel, and horizontal fixed head and oblique fixed head and shaped steel form the triangle rock-steady structure.
Described support or angle brace bottom are provided with some bracing frames, support frame as described above comprises carrying to the brace summer of support or angle brace, and the brace summer two ends arrange column, are provided with the bridging of intersection between the column at brace summer two ends.
Described support or angle brace are bolted on the top of brace summer.
The brace summer two ends connect column by bracket spare, and bracket spare side is fixedly connected with column by bolt, and bracket spare surface is fixedly connected with brace summer underrun bolt.
Adjacent brace summer bottom is provided with secondary beam, and the secondary beam two ends connect column by bracket spare, and bracket spare side is fixedly connected with column by bolt, and bracket spare surface is fixedly connected with secondary beam underrun bolt.
The bottom surface of brace summer or secondary beam and column intersection is provided with inclined support bar.
Described column two bottom sides is provided with most advanced and sophisticated triangle part down, and triangle part inserts in the soil body with column.
Beneficial effect, pattern foundation pit supporting structure steel beam structure described in the utility model, the advantages such as support stiffness is large, span is large, distortion can control, easy construction, reusing have reached the reduction of erection time, have reduced the purpose of construction costs.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is pattern foundation pit supporting structure described in the utility model steel beam structure floor map.
Fig. 2 is described in the utility model to the support structure schematic diagram.
Fig. 3 is inclined support structure schematic diagram described in the utility model.
Fig. 4 is bracing frame schematic diagram described in the utility model.
Fig. 5 is column bracket structural representation described in the utility model.
Fig. 6 is another kind of column bracket structural representation described in the utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, foundation ditch adopts inner supporting structure in the present embodiment, is provided with a plurality of fish belly sills around the foundation ditch and encloses purlin 1, and the foundation ditch middle part is provided with and connects shaped steel that fish belly sill encloses purlin to supportting 2, and the foundation ditch corner is provided with and connects the shape steel diagonal supporting 3 that fish belly sill encloses purlin; Shaped steel to support 2 or shape steel diagonal supporting 3 consisted of side by side by the shaped steel more than two, bolt connects on the shaped steel length direction, be provided with horizontal and oblique fixed head on the shaped steel width side by side, fixed head is bolted on shaped steel, horizontal fixed head and oblique fixed head is end to end and form the triangle rock-steady structure with shaped steel.Be that four shaped steel support side by side in the present embodiment, shaped steel is chosen according to the actual loading situation the shaped steel radical that supports or shape steel diagonal supporting includes.
Referring to Fig. 2, four shaped steel are arranged side by side to form and are provided with the gap to supportting between 2, four shaped steel, and shaped steel is bolted prolongation on the length direction.Shaped steel docking point place on the length direction, be provided with horizontal fixed head 21, laterally fixed head is bolted shaped steel, in two adjacent horizontal fixed head 21 scopes, be provided with an oblique fixed head 22, oblique fixed head 22 is diagonal way and connects, oblique fixed head is bolted shaped steel, and laterally the shaped steel on fixed head 21 oblique fixed heads 22 and the length direction consists of a leg-of-mutton rock-steady structure, so that 2 integral rigidity are good to supportting, intensity is high.Laterally fixed head 21, oblique fixed head 22 are section steel material.To supportting 2 shaped steel number according to the actual loading situation, can suitably increase or reduce.
Referring to Fig. 3, three shaped steel are arranged side by side to form between 3, three shaped steel of angle brace and are provided with the gap, and shaped steel is bolted prolongation on the length direction.Shaped steel docking point place on the length direction, be provided with horizontal fixed head 31, laterally fixed head is bolted shaped steel, in two adjacent horizontal fixed head 31 scopes, be provided with an oblique fixed head 32, oblique fixed head 32 is diagonal way and connects, oblique fixed head is bolted shaped steel, and laterally the shaped steel on fixed head 31 oblique fixed heads 32 and the length direction consists of a leg-of-mutton rock-steady structure, so that diagonal brace 3 integral rigidity are good, intensity is high.Laterally fixed head 31, oblique fixed head 32 are section steel material.The shaped steel number of diagonal brace 3 can suitably increase or reduce according to the actual loading situation.
Referring to Fig. 4, to support 2 or angle brace 3 under be provided with some bracing frames 4, bracing frame 4 has a brace summer 41, brace summer 41 two ends are provided with column 42, are provided with bracket spare 43 on the column 42, brace summer 41 connects columns 42 by bracket 43.To support 2 or angle brace 3 be arranged on brace summer top and connect with bolt.Be provided with the bridging 44 of intersection between two adjacent columns, arranging of bridging 44 can be answered the stability that strengthens column.Bridging 44 not only can be used on the same bracing frame, also bridging 44 can be set on the adjacent upright posts 42 of different bracing frames.
Referring to Fig. 5, bracket spare 43 is shaped steel, bracket spare 43 sides are bolted column 42, brace summer 41 ends connect bracket spare 43, brace summer 41 bottom surfaces also are bolted bracket spare 43, to support 2 or angle brace 3 be arranged on brace summer 41 upper surfaces, brace summer 41 is bolted supportting 2 or the bottom surface of angle brace 3.Such bracket one column arranges a brace summer, is mainly used in A place such as the A place of Fig. 2 and Fig. 3 and carries out bearing support to supportting 2 or angle brace 3.
Referring to Fig. 6, when to supportting 2 or certain position of angle brace 3 when needing two brace summers 41 to support, two brace summers can be adopted a column 42 carryings, this to support 2 or angle brace 3 bottoms two parallel brace summers 41 are set, the bottom surface of brace summer 41 ends arranges secondary beam 44, and secondary beam 44 is arranged on the bracket spare 43 and with bolt and fixes.In order to increase firm stable, secondary beam 44 is provided with inclined support bar 45 with the bottom surface of column 42 intersections.Such bracket structure is arranged on B place as shown in Figure 2 usually, and the brace summer of two places carrying adopts a column 42, can save column, and economical with materials makes things convenient for excavation of foundation pit simultaneously.
Again referring to Fig. 1, connect a shaped steel triangle part 222 to supportting 2 end, connecting Eight characters support 223 by shaped steel triangle part 222, the bipod of Eight characters support 223 is connected to fish belly sill and encloses on the purlin.Described shaped steel triangle part 222 is an isosceles right-angled triangle, and two right-angle sides of isosceles right triangle connect two legs of shaped steel Eight characters support 223, and the hypotenuse of isosceles right triangle connects supportting 2.Described Eight characters support 223 is pressed in the end that fish belly sill encloses purlin lower-cord beam and the joint of the muscle that winds up.When the size span of Eight characters support 223 is larger, innerly under 223 hips enclose the purlin distortion in order to prevent that the Eight characters from supportting, support 223 centre positions at the Eight characters, a type steel support 224 is set.
Be provided with fish belly sill in the both sides of two legs that enclose the support of the Eight characters on the purlin 223 and enclose purlin 1, fish belly sill encloses purlin 1 and comprises a lower-cord beam 11, steel strand 12, web member 13.
Its lower-cord beam 11 is assembled by section steel material; Its steel strand 12 are comprised of many high-strength underrelaxation steel wires, adopt the plastic cement pipe box to play and fill with grease protection and isolation between the every steel strand.
Its web member 13 assembles wooden font or yi word pattern by section steel material; Web member 13 arranges on the string beam 11, and the two ends of steel strand 12 connect lower-cord beam 11 two ends, and the middle part of steel strand 12 is supported by web member 13 and is the fish belly shape.Shaped steel and steel strand are assembled into the purlin that encloses of a fish belly shape structure, steel strand are applied prestressing force, this encloses the purlin span to reach increase, increases to enclose purlin rigidity the purpose of the horizontal distortion of control foundation ditch.
The two ends of enclosing purlin 1 at this fish belly sill arrange the strong point.223 liang of legs of Eight characters support are arranged on this strong point.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not subjected to the restriction of above-mentioned example; that describes in above-mentioned example and the manual just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. a structure that improves foundation ditch steel support stiffness and stability is provided with a plurality of fish belly sills around the foundation ditch and encloses purlin, and the foundation ditch middle part is provided with and connects shaped steel that fish belly sill encloses purlin to support, and the foundation ditch corner is provided with and connects the shape steel diagonal supporting that fish belly sill encloses purlin; Shaped steel is made of many shaped steel side by side to support or shape steel diagonal supporting, bolt connects on the shaped steel length direction, it is characterized in that, be provided with horizontal and oblique fixed head on the shaped steel width side by side, fixed head is bolted on shaped steel, and horizontal fixed head and oblique fixed head and shaped steel form the triangle rock-steady structure.
According to claim 1 a kind of improve foundation ditch steel support stiffness and stability structure, it is characterized in that, described support or angle brace bottom are provided with some bracing frames, support frame as described above comprises that carrying is to the brace summer of support or angle brace, the brace summer two ends arrange column, are provided with the bridging of intersection between the column at brace summer two ends.
3. a kind of structure that improves foundation ditch steel support stiffness and stability according to claim 2 is characterized in that, described support or angle brace is bolted on the top of brace summer.
According to claim 3 a kind of improve foundation ditch steel support stiffness and stability structure, it is characterized in that, the brace summer two ends connect column by bracket spare, and bracket spare side is fixedly connected with column by bolt, and bracket spare surface is fixedly connected with brace summer underrun bolt.
According to claim 3 a kind of improve foundation ditch steel support stiffness and stability structure, it is characterized in that, adjacent brace summer bottom is provided with secondary beam, the secondary beam two ends connect column by bracket spare, bracket spare side is fixedly connected with column by bolt, and bracket spare surface is fixedly connected with secondary beam underrun bolt.
6. a kind of structure that improves foundation ditch steel support stiffness and stability according to claim 5 is characterized in that the bottom surface of brace summer or secondary beam and column intersection is provided with inclined support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496803 CN202755370U (en) | 2012-09-26 | 2012-09-26 | Structure for improving rigidity and stability of foundation pit steel support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496803 CN202755370U (en) | 2012-09-26 | 2012-09-26 | Structure for improving rigidity and stability of foundation pit steel support |
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| Publication Number | Publication Date |
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| CN202755370U true CN202755370U (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220496803 Expired - Lifetime CN202755370U (en) | 2012-09-26 | 2012-09-26 | Structure for improving rigidity and stability of foundation pit steel support |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839678A (en) * | 2012-09-26 | 2012-12-26 | 上海新强劲工程技术有限公司 | Structure for improving rigidity and stability of foundation pit steel support |
| CN103967022A (en) * | 2014-05-28 | 2014-08-06 | 德清鑫德机械有限公司 | Support unit for long sides of strip rectangular foundation ditch |
| CN104032750A (en) * | 2014-05-28 | 2014-09-10 | 德清鑫德机械有限公司 | Supporting structure for short edge of long rectangular foundation pit |
| CN105431593A (en) * | 2013-07-19 | 2016-03-23 | 斯博泰科有限公司 | Strut connection structure for constructing temporary earth retaining structure |
| CN105431594A (en) * | 2013-07-19 | 2016-03-23 | 斯博泰科有限公司 | Anti-bending strut for use in construction of temporary earth retaining structure |
-
2012
- 2012-09-26 CN CN 201220496803 patent/CN202755370U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839678A (en) * | 2012-09-26 | 2012-12-26 | 上海新强劲工程技术有限公司 | Structure for improving rigidity and stability of foundation pit steel support |
| CN105431593A (en) * | 2013-07-19 | 2016-03-23 | 斯博泰科有限公司 | Strut connection structure for constructing temporary earth retaining structure |
| CN105431594A (en) * | 2013-07-19 | 2016-03-23 | 斯博泰科有限公司 | Anti-bending strut for use in construction of temporary earth retaining structure |
| CN103967022A (en) * | 2014-05-28 | 2014-08-06 | 德清鑫德机械有限公司 | Support unit for long sides of strip rectangular foundation ditch |
| CN104032750A (en) * | 2014-05-28 | 2014-09-10 | 德清鑫德机械有限公司 | Supporting structure for short edge of long rectangular foundation pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
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| CX01 | Expiry of patent term |