CN105239587A - Splayed diagonal bracing type steel bracing system of foundation pit enclosure wall - Google Patents
Splayed diagonal bracing type steel bracing system of foundation pit enclosure wall Download PDFInfo
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- CN105239587A CN105239587A CN201510786787.3A CN201510786787A CN105239587A CN 105239587 A CN105239587 A CN 105239587A CN 201510786787 A CN201510786787 A CN 201510786787A CN 105239587 A CN105239587 A CN 105239587A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000006073 displacement reaction Methods 0.000 claims description 34
- 230000000694 effects Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a splayed diagonal bracing type steel bracing system of a foundation pit enclosure wall. The steel bracing system comprises an enclosing purlin, an opposite-side brace, angle braces, I-shaped members and triangular members, wherein first bolt holes for being connected with bolts of the opposite-side brace and bolts of the triangular members are formed in the peripheral sides of each I-shaped member; two clamping and inserting slots are respectively formed in a pair of opposite side parts of each I-shaped member; the triangular members are respectively clamped and inserted in the clamping slots; one end of each angle brace is connected to one side of the corresponding triangular member, and the other end of the angle brace is connected with the enclosing purlin; two ends of the opposite-side brace are connected to the enclosing purlin; the other pair of opposite sides of each I-shaped member are connected in series in the opposite-side brace. Through the adoption of the steel bracing system disclosed by the invention, the bracing span of the opposite-side brace can be enlarged.
Description
Technical field
The present invention relates to building implements field, particularly relate to the foundation ditch enclosing Eight characters to support type steel support system.
Background technology
At building field, in order to ensure the firm of bracing of foundation pit wall (foundation ditch enclosing), existing a kind of fish-bellied type equalizer bar support system, namely with different size model shaped steel for material makes fish belly sill, to support, diagonal brace and live end; By the steel strand on fish belly sill and to the jack Shi Hanzhang on support, diagonal brace, control the displacement of bracing of foundation pit wall.
But, for the foundation ditch that span is larger, even if the corresponding length increased support, also be difficult to keep the enough intensity supportted and corresponding equilibrant force is provided, if set up angle brace, be difficult to again angle brace to be directly installed on to support and enclose between purlin, finally causing existing foundation ditch enclosing can only be applied to the less foundation ditch of span.
Such as, existing type steel support only has triangular pieces for connecting support and angle brace, and causing can only be each to support connection one group of angle brace when enclosing in purlin and connecting and implement Eight characters support, though its structure is simple, but reinforce stabilization is limited, the actual maximum span of support system is at 18m; This limited span result in the increase to support quantity, and then causes the waste of material.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide the foundation ditch enclosing Eight characters to support type steel support system, can make to support larger span to support.
Object of the present invention realizes by the following technical solutions:
The foundation ditch enclosing Eight characters is to support type steel support system, comprise and enclose purlin, to support, angle brace, I-shaped and triangular pieces, the outer circumferential side of I-shaped be provided with for to supportting, bolted first bolt hole of triangular pieces, this I-shaped wherein a pair relative both sides there is card plug, triangular pieces is blocked respectively and is inserted in two card plugs, the side of triangular pieces is connected with one end of angle brace, the other end of angle brace with enclose purlin and be connected, the two ends of support are connected to and enclose purlin, I-shaped another relative both sides are serially connected with in support.
Preferably, I-shaped comprises multiple cross bar and multiple montant, cross bar and montant crisscross, the cross bar and the montant that are positioned at outside all have bolt hole, described card plug is divided into two montants being positioned at outside, support is provided with to breach and forms two opening ends, and two opening ends are connected to cross bar by bolt hole, and triangular pieces is connected to montant by bolt hole.
Preferably, the position of montant and the position one_to_one corresponding to the rod member supportted.
Preferably, described breach is multiple, and I-shaped to be set to breach respective amount multiple, and I-shaped correspondence is embedded in each breach, triangular pieces correspondence is connected to the relative both sides of each I-shaped a pair, and angle brace correspondence is connected to triangular pieces and encloses between purlin.
Preferably, each angle brace is about symmetrical to support, and every two relative angle brace composition Eight characters supports, each group Eight characters support ecto-entad reduces.
Preferably, angle brace the other end by triangular pieces with enclose purlin and be connected.
Preferably, one end of angle brace is bolted in the triangular pieces of draw-in groove at I-shaped, and the other end of angle brace is bolted in being connected to the triangular pieces of enclosing purlin.
Preferably, triangular pieces is protruding with projection, and this projection card inserts in card plug.
Preferably, this foundation ditch enclosing Eight characters also comprises displacement control system to support type steel support system, multiple with to support one to one displacement monitor and multiple with to supportting position adjustments assembly one to one, position adjustments assembly comprises and sets firmly part, movable part and jack, movable part is fixedly arranged on the one end to support, set firmly part and be fixedly installed in the inside of enclosing purlin, and movable part is positioned at the side setting firmly part also can relative to setting firmly part activity, this jack is used for movable part relative to setting firmly part along movable to the length direction of support, this displacement monitor is used for detected activity part relative to the displacement setting firmly part activity, this displacement control system is used for the duty controlling jack according to the testing result of displacement monitor.
Compared to existing technology, beneficial effect of the present invention is:
The combination of I-shaped of the present invention and triangular pieces, both the connection of angle brace had been facilitated, also be beneficial to the lifting to support intensity simultaneously, can make support span larger, improve the utilization rate to support, too increase low construction space, wherein, when a pair is provided with the combination of multiple I-shaped and triangular pieces to support, multiple combination can be carried out many group Eight characters in support and support, and increases a pair further to supportting the span that can support.
Accompanying drawing explanation
Fig. 1 schematic diagram that to be the foundation ditch enclosing Eight characters of the present invention splice and combine I-shaped and triangular pieces in support type steel support system;
Fig. 2 is the structural representation of I-shaped of the foundation ditch enclosing Eight characters of the present invention to support type steel support system;
Fig. 3 is the structural representation of the foundation ditch enclosing Eight characters of the present invention to support type steel support system;
Fig. 4 is I-shaped of the present invention, connection diagram to support, triangular pieces, angle brace;
Fig. 5 is that the foundation ditch enclosing Eight characters of the present invention sets up the schematic diagram of displacement control system, displacement monitor, position adjustments assembly to support type steel support system;
Fig. 6 is that the foundation ditch enclosing Eight characters of the present invention is to support type steel support system force analysis arrangement diagram;
Fig. 7 is that the present invention encloses purlin elementary section L
5mechanical analysis schematic diagram;
Fig. 8 is the schematic diagram of the present invention to tie distance;
Fig. 9 is the schematic diagram of the present invention's many groups Eight characters support;
Figure 10 is the structural representation that the present invention encloses purlin.
In figure: 1, enclose purlin; 101, shaped steel encloses purlin; 102, steel plate encloses purlin; 2, to support; 3, angle brace; 4, I-shaped; 41, card plug; 42, cross bar; 43, montant; 44, bolt hole; 5, triangular pieces; 51, projection; 6, Eight characters support; 100, displacement control system; 110, displacement monitor; 120, position adjustments assembly; 121, part is set firmly; 122, movable part; 123, jack.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, the present invention is described further:
The foundation ditch enclosing Eight characters is as Figure 1-4 to support type steel support system, comprise and enclose purlin 1, to support 2, angle brace 3, I-shaped 4 and triangular pieces 5, the outer circumferential side of I-shaped 4 be provided with for to support 2, bolted first bolt hole 44 of triangular pieces 5, this I-shaped 4 wherein a pair relative both sides there is card plug 41, triangular pieces 5 is blocked respectively and is inserted in two card plugs 41, the side of triangular pieces 5 is connected with one end of angle brace 3, the other end of angle brace 3 with enclose purlin 1 and be connected, the two ends of support 2 are connected to and enclose purlin 1, I-shaped 4 another relative both sides are serially connected with in support 2.
Closed by the card insert group of triangular pieces 5 with I-shaped 4, first make this combinative stability enough, intensity is good, combine again and the connection to support 2, angle brace 3, both the installation having facilitated angle brace 3 connects, and is beneficial to strengthen the resistance of enclosing purlin 1 pair of soil body, can increases again the span to support 2, avoid support 2 intensity excessively weak, be very suitable for the foundation ditch situation that span is larger.
Exemplarily, I-shaped 4 of this example comprises multiple cross bar 42 and multiple montant 43, cross bar 42 and montant 43 crisscross, the cross bar 42 and the montant 43 that are positioned at outside all have bolt hole 44, described card plug 41 is divided into two montants 43 being positioned at outside, be provided with breach to support 2 and form two opening ends, two opening ends are connected to cross bar 42 by bolt hole 44, and triangular pieces 5 is connected to montant 43 by bolt hole 44.The setting of cross bar 42 and montant 43, provides sufficient intensity to I-shaped 4, and card plug 41 is opened in montant 43, the position of montant 43 and the position one_to_one corresponding to the rod member of support 2, then will be more balanced to the stressed of support 2.
Exemplarily, described breach is multiple, and what be set to breach respective amount for I-shaped 4 is multiple, and I-shaped 4 correspondences are embedded in each breach, triangular pieces 5 correspondence is connected to the relative both sides of each I-shaped 4 a pair, and angle brace 3 correspondence is connected to triangular pieces 5 and encloses between purlin 1.Therefore, can be set to multiple to one easily to the passive angle brace of support 23, to make possessing enough enabling capabilities to support 2, extend the span that can support support 2 further.Stressed more balanced for what make support 2, each angle brace 3 is about symmetrical to support 2, every two relative angle braces 3 form Eight characters support 6, the each group of Eight characters supports 6 ecto-entads and reduces, form braced structures step by step, as preferred mode, the angle brace 3 being positioned at triangular pieces 5 the same side is parallel to each other, to form balanced support force.
In addition, for making structural strength more stable, triangular pieces 5 is protruding with projection 51, and this projection 51 card inserts in card plug 41, and making I-shaped 4 and two triangular pieces 5 be easier to splicing becomes black box, for being embedded in described breach.
For forming more stable support further, the other end of angle brace 3 by triangular pieces 5 with enclose purlin and be connected.Wherein, one end of angle brace 3 is bolted in the triangular pieces 5 of draw-in groove at I-shaped 5, and the other end of angle brace 3 is bolted in being connected to the triangular pieces 5 of enclosing purlin 1, to facilitate connection.
As shown in Figure 5, the foundation ditch enclosing Eight characters of this example also comprises displacement control system 100 to support type steel support system, multiple with to support 2 one to one displacement monitor 110 and multiple with to support 2 position adjustments assembly 120 one to one, position adjustments assembly 120 comprises and sets firmly part 121, movable part 122 and jack 123, movable part 122 is fixedly arranged on the one end to support 2, set firmly part 121 and be fixedly installed in the inside of enclosing purlin 1, and movable part 122 is positioned at the side setting firmly part 121 also can be movable relative to setting firmly part 121, this jack 123 for movable part 122 relative to setting firmly part 121 along movable to the length direction of support 2, this displacement monitor 110 for detected activity part 122 relative to the displacement setting firmly part 121 activity, this displacement control system 100 is for controlling the duty of jack 123 according to the testing result of displacement monitor 110.
Wherein, as shown in Figure 10, enclose purlin 1 to comprise shaped steel and enclose purlin 101 and be stacked at the shaped steel steel plate enclosed on purlin and enclose purlin 102.
Due to when variations in temperature, to the change in length that support 2 can produce, cause like this changing to the distance L enclosed between purlin 1 of support 2 both sides, thus to support type steel support system, additional force is created to the foundation ditch enclosing Eight characters, on the impact that its stability causes, therefore, displacement control system 100, multiple with to support 2 one to one displacement monitor 110 and multiple with to support 2 one to one position adjustments assembly 120 can solve the problem of this additional force.
Particularly, the pedestal of jack 123 is fixedly arranged on and sets firmly part 121, and the motion bar of jack 123 is fixedly arranged on movable part 122.
If temperature reduces, displacement monitor 110 can monitor displacement reduction signal, and displacement control system 100 extends jack 123 push rod according to this signal, compensates the contracted length to support 2, realizes remaining unchanged to the distance of enclosing between purlin 1 of support 2 both sides; When temperature raises, displacement monitor 110 can monitor incremental displacement value signal, and automatic control system shortens jack 123 push rod according to this signal, offsets the extended length to support 2, realizes remaining unchanged to the distance of enclosing between purlin assembly 10 of support 2 both sides; Like this, realizing controlling foundation ditch deeply mixing cement-soil pile is the object of zero.
Further, this displacement control system 100, displacement monitor 110 and position adjustments assembly 120 also can be arranged on one end of angle brace 3, the principle that displacement regulates is consistent with situation about being arranged on the end of support 2, the change in length that angle brace 3 produces when variations in temperature can be overcome like this, cause two the distance L enclosed between purlin 1 forming angle to change, realizing further controlling foundation ditch deeply mixing cement-soil pile is the object of zero.
Above-mentioned a pair Eight characters support 6, is enclosed purlin 1 to support 2 and one and purlin elementary section is enclosed in composition one group of Eight characters support, and can being determined by following mechanical analysis of the maximum span that can realize of purlin elementary section is enclosed in the support of this Eight characters:
The mechanical analysis that Eight characters support supports as shown in Figure 6; In figure, q is soil pressure, L
1the bond length of foundation ditch, L
2the long edge lengths of foundation ditch, L
3be foundation ditch to the spacing between support, maximum span mainly encloses purlin elementary section L
5determine, the mechanical analysis of this section as shown in Figure 7.
Enclose purlin elementary section L
5demand fulfillment:
Wherein:
In above formula, A is the area that assembling shaped steel encloses purlin; W
xit is the moment of inertia that assembling shaped steel encloses purlin horizontal direction; W
yit is the moment of inertia that assembling shaped steel encloses purlin vertical direction;
Current actual engineering design experience is:
L
5≤8m(2)
As shown in Figure 8, to the determination of the spacing of support 2:
By above-mentioned conditional (1) and conditional (2) can obtain in the ordinary course of things foundation ditch to the spacing between support 2:
L
3＝3L
5≤24m
For possessing the situation organizing the span of Eight characters support 6, as shown in Figure 9 more.
In order to solve current fish belly sill support system to the too small span problem of tie distance, native system achieves many group Eight characters support 6 by the connection of I-shaped 4 and triangular pieces 5, thus the spacing between adding support 2, the large span between achieving support 2.Save material usage, for Underground Construction provides a large amount of spaces.
For realizing being uniformly distributed enclosing the rigidity on purlin 1 direction, better control foundation ditch boundary displacement, the spacing between each group Eight characters support 6 is identical, and the rigidity of each group Eight characters support 6 should meet the following conditions:
K
1＝K
2＝K
3＝......＝K
N
Namely
Wherein K
ii-th group of Eight characters support 6 perpendicular to the rigidity of enclosing on purlin 1 direction; A
iit is the section area of i-th group of Eight characters support 6.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the claims in the present invention.
Claims (9)
1. the foundation ditch enclosing Eight characters is to support type steel support system, it is characterized in that, comprise and enclose purlin, to support, angle brace, I-shaped and triangular pieces, the outer circumferential side of I-shaped be provided with for to supportting, bolted first bolt hole of triangular pieces, this I-shaped wherein a pair relative both sides there is card plug, triangular pieces is blocked respectively and is inserted in two card plugs, the side of triangular pieces is connected with one end of angle brace, the other end of angle brace with enclose purlin and be connected, the two ends of support are connected to and enclose purlin, I-shaped another relative both sides are serially connected with in support.
2. the foundation ditch enclosing Eight characters according to claim 1 is to support type steel support system, it is characterized in that, I-shaped comprises multiple cross bar and multiple montant, cross bar and montant crisscross, the cross bar and the montant that are positioned at outside all have bolt hole, and described card plug is divided into two montants being positioned at outside, and support is provided with to breach and forms two opening ends, two opening ends are connected to cross bar by bolt hole, and triangular pieces is connected to montant by bolt hole.
3. the foundation ditch enclosing Eight characters according to claim 2 is to support type steel support system, it is characterized in that, the position of montant and the position one_to_one corresponding to the rod member supportted.
4. the foundation ditch enclosing Eight characters according to claim 2 is to support type steel support system, it is characterized in that, described breach is multiple, I-shaped to be set to breach respective amount multiple, I-shaped correspondence is embedded in each breach, triangular pieces correspondence is connected to the relative both sides of each I-shaped a pair, and angle brace correspondence is connected to triangular pieces and encloses between purlin.
5. the foundation ditch enclosing Eight characters according to claim 4 is to support type steel support system, it is characterized in that, each angle brace is about symmetrical to support, and every two relative angle brace composition Eight characters supports, each group Eight characters support ecto-entad reduces.
6. the foundation ditch enclosing Eight characters according to claim 5 is to support type steel support system, it is characterized in that, the other end of angle brace by triangular pieces with enclose purlin and be connected.
7. the foundation ditch enclosing Eight characters according to claim 6 is to support type steel support system, it is characterized in that, one end of angle brace is bolted in the triangular pieces of draw-in groove at I-shaped, and the other end of angle brace is bolted in being connected to the triangular pieces of enclosing purlin.
8. the foundation ditch enclosing Eight characters according to any one of claim 1-5 is to support type steel support system, and it is characterized in that, triangular pieces is protruding with projection, and this projection card inserts in card plug.
9. the foundation ditch enclosing Eight characters according to claim 8 is to support type steel support system, it is characterized in that, this foundation ditch enclosing Eight characters also comprises displacement control system to support type steel support system, multiple with to support one to one displacement monitor and multiple with to supportting position adjustments assembly one to one, position adjustments assembly comprises and sets firmly part, movable part and jack, movable part is fixedly arranged on the one end to support, set firmly part and be fixedly installed in the inside of enclosing purlin, and movable part is positioned at the side setting firmly part also can relative to setting firmly part activity, this jack is used for movable part relative to setting firmly part along movable to the length direction of support, this displacement monitor is used for detected activity part relative to the displacement setting firmly part activity, this displacement control system is used for the duty controlling jack according to the testing result of displacement monitor.
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| CN201510786787.3A CN105239587B (en) | 2015-11-16 | 2015-11-16 | Eight word of foundation ditch enclosing is to supportting type steel support system |
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| CN201510786787.3A CN105239587B (en) | 2015-11-16 | 2015-11-16 | Eight word of foundation ditch enclosing is to supportting type steel support system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780824A (en) * | 2016-03-16 | 2016-07-20 | 东通岩土科技（杭州）有限公司 | Profile steel testing method for foundation pit profile steel inner support system |
| CN109440776A (en) * | 2018-11-02 | 2019-03-08 | 中国建筑第八工程局有限公司 | Axle power active control system and its axle power Active Control Method of the foundation pit to support structure |
| CN115045292A (en) * | 2022-06-28 | 2022-09-13 | 东通岩土科技股份有限公司 | Combined force transmission piece and building foundation pit supporting structure |
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| CN204112335U (en) * | 2014-08-13 | 2015-01-21 | 上海强劲地基工程股份有限公司 | A kind ofly reduce the puller system that foundation ditch encloses purlin horizontal component |
| CN205259192U (en) * | 2015-11-16 | 2016-05-25 | 戴向胜 | Foundation ditch encloses and keeps off eight characters to propping shaped steel braced system |
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2015
- 2015-11-16 CN CN201510786787.3A patent/CN105239587B/en active Active
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| JPH09264023A (en) * | 1996-03-29 | 1997-10-07 | Marufuji Shiitopairu Kk | Brace or angle brace receiving piece |
| KR100633796B1 (en) * | 2005-11-16 | 2006-10-16 | (주)써포텍 | Connecting structure of mid supporting beam for temporary soil sheathing work |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780824A (en) * | 2016-03-16 | 2016-07-20 | 东通岩土科技（杭州）有限公司 | Profile steel testing method for foundation pit profile steel inner support system |
| CN109440776A (en) * | 2018-11-02 | 2019-03-08 | 中国建筑第八工程局有限公司 | Axle power active control system and its axle power Active Control Method of the foundation pit to support structure |
| CN109440776B (en) * | 2018-11-02 | 2023-11-17 | 中国建筑第八工程局有限公司 | Shaft force active control system and shaft force active control method for foundation pit opposite supporting structure |
| CN115045292A (en) * | 2022-06-28 | 2022-09-13 | 东通岩土科技股份有限公司 | Combined force transmission piece and building foundation pit supporting structure |
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| CN105239587B (en) | 2017-04-05 |
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Effective date of registration: 20191204 Address after: 323000 room 505-2, floor 5, No. 60, Tongji street, Liandu Economic Development Zone, Lishui City, Zhejiang Province (Lijing National Industrial Park) Patentee after: Zhejiang mingsite Construction Support Technology Co., Ltd Address before: 200050 No. 900, Changning District, Shanghai, West Yan'an Road Patentee before: Dai Xiangsheng |