CN217782070U - A shaped steel joist structure that is used for many splays of shaped steel support end to prop department - Google Patents
A shaped steel joist structure that is used for many splays of shaped steel support end to prop department Download PDFInfo
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- CN217782070U CN217782070U CN202221047512.XU CN202221047512U CN217782070U CN 217782070 U CN217782070 U CN 217782070U CN 202221047512 U CN202221047512 U CN 202221047512U CN 217782070 U CN217782070 U CN 217782070U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 157
- 239000010959 steel Substances 0.000 title claims abstract description 157
- 239000004567 concrete Substances 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000011378 shotcrete Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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Abstract
The utility model discloses a section steel joist structure for section steel supporting end multi-splayed support, which comprises a foundation pit inner support system consisting of a steel support (11), a splayed support (12), a section steel supporting enclosing purlin (13) and a concrete support (14), and further comprises a first upright post (2), a first joist (3) and a second joist (4); the first upright posts (2) are vertically arranged in the foundation pit, and the pair of first upright posts (2) are symmetrically positioned at two sides of one end of the steel support (11); the two ends of the first joist (3) are respectively lapped on the pair of first upright posts (2), one ends of the pair of second joists (4) are respectively lapped on the pair of first upright posts (2) correspondingly, and the other ends of the pair of second joists (4) are respectively lapped on the inner wall of the profile steel supporting enclosing purlin (13) through the connecting piece (5). The utility model discloses can support through joist with load transmission to stand and concrete, make the interior support system of whole foundation ditch have great bearing capacity.
Description
Technical Field
The utility model relates to a support the structure in the foundation ditch, especially relate to a shaped steel joist structure that is used for many eight characters of shaped steel support end to prop department.
Background
Along with the higher and higher requirements of low carbon and environmental protection in the building industry, the green, energy-saving and environmental protection of building materials is a necessary trend. The support adopts the steel shotcrete to be a green's construction technology in the excavation supporting, and the steel shotcrete includes that shaped steel supports and circular steel tube support, and the shaped steel supports and is superior to the circular steel tube support in aspects such as material transportation, storage, life, develops the assembled combination shaped steel support of multiform in recent years.
At present, the inner support of a foundation pit is mostly supported by profile steel, a profile steel upright is adopted as an upright, a bracket is arranged on the upright, a joist is arranged on the upright, and the joist is used as an installation support of the steel support. The arrangement of the joists and the vertical columns affects the efficiency and cost of construction, and the arrangement of the vertical columns and the joists is reduced under the condition of ensuring the bearing capacity and deformation requirements, so that the cost reduction and the efficiency improvement of engineering are facilitated. Therefore, in order to enlarge the coverage of the supports, a plurality of splayed supports can be arranged at the support ends during construction, the number of the supports is large, the weight is large, the number of the columns and the number of the joists which need to be arranged are also greatly increased, the construction efficiency is low, the earthwork excavation is inconvenient, and the cost is increased.
Disclosure of Invention
An object of the utility model is to provide a shaped steel joist structure that is used for many eight characters of shaped steel support end to prop department can transmit the load to stand and concrete through the joist and support, makes the interior support system of whole foundation ditch have great bearing capacity.
The utility model discloses a realize like this:
a profile steel joist structure for a multi-splayed-strut position at the end of a profile steel strut comprises a foundation pit inner support system consisting of a steel strut, splayed struts, a profile steel strut enclosing purlin and a concrete strut, wherein the concrete strut is circumferentially enclosed in the foundation pit, the profile steel strut enclosing purlin is fixedly arranged on the inner wall of the concrete strut, and two ends of the steel strut are respectively fixed on the inner wall of the profile steel strut enclosing purlin through the plurality of splayed struts;
the section steel joist structure further comprises a first upright post, a first joist and a second joist; the first upright columns are vertically arranged in the foundation pit, and the pair of first upright columns are symmetrically positioned on two sides of one end of the steel support; the two ends of the first joist are respectively lapped on the pair of first upright posts, one ends of the pair of second joists are respectively correspondingly lapped on the pair of first upright posts, and the other ends of the pair of second joists are respectively lapped on the inner wall of the profile steel supporting enclosing purlin through the connecting piece.
The first stand on fixed mounting have first bracket, the one end fixed mounting of first joist makes first joist and the perpendicular overlap joint of first stand on the first bracket, the one end fixed mounting of second joist makes second joist and the perpendicular overlap joint of first stand on the first bracket.
The corner of first bracket be equipped with first stiffening rib.
The pair of second joists are arranged in parallel, the second joists are perpendicular to the first joists, the first joists and the section steel supporting enclosing purlins are arranged in parallel, and therefore the first joists, the pair of second joists and the section steel supporting enclosing purlins are provided with a supporting system in a rectangular structure in an enclosing mode.
One end of the second joist is positioned outside a connecting node of one end of the splayed support and the steel support, the other end of the second joist is positioned inside a connecting node of the other end of the splayed support and the profile steel support enclosing purlin, and the middle part of the second joist is lapped with the splayed support.
The splayed strut is equipped with the node converting piece with the connected node that shaped steel supported and encloses the purlin, the one end and the splayed strut fixed connection of node converting piece, the other end and the shaped steel support of node converting piece enclose purlin fixed connection.
The connecting piece is an H-shaped steel component with end plates welded at two ends respectively, the flange of the H-shaped steel component is fixedly installed on the section steel supporting enclosing purlin, and the end plates are fixedly installed on the second joist.
The steel bracing in be equipped with a pair of second stand, a pair of second stand symmetry is located the both sides portion of steel bracing, and sets up the third joist between a pair of second stand, the both ends of third joist overlap joint with the both sides of steel bracing respectively.
The pair of second upright posts are fixedly provided with second brackets, and the end part of the third supporting beam is fixedly arranged on the second brackets; and a second stiffening rib is arranged at the corner of the second bracket.
The third bracket is arranged at the joint of the bottom of the profile steel supporting enclosing purlin, the bottom of the steel support and the concrete support, one end of the profile steel supporting enclosing purlin is fixedly connected with the steel support through the third bracket through a high-strength bolt, and the other end of the profile steel supporting enclosing purlin and the third bracket are fixed on the concrete support through embedded parts.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses owing to be equipped with first stand, first joist and second joist, first joist transmits the load to first stand, utilizes first joist to undertake the load of steel shotcrete, and the second joist transmits the load to first stand and shaped steel support enclosing purlin, utilizes a pair of second joist to undertake the load that the eight characters propped to satisfy the load support demand that the eight characters propped department weight is big, the deformation requirement is high, has promoted the bearing capacity of the interior support system of foundation ditch.
2. The utility model discloses owing to be equipped with first stand, first joist and second joist, first stand, first joist and second joist and shaped steel support enclose the purlin and enclose and establish the support system that is the rectangle structure, have disperseed the setting of stand and joist, have avoided a plurality of eight characters to prop the problem that the department arranged more joist and stand, reduce structure weight and construction cost, improve the efficiency of construction.
3. The utility model discloses owing to be equipped with second stand and third joist, the third joist transmits the load to the second stand, utilizes first joist and third joist to undertake the load that the steel supported, has further promoted the bearing performance of support system in the foundation ditch, on the basis of guaranteeing bearing capacity and deformation, reduces arranging of stand and joist, helps the cost reduction of engineering to improve.
Drawings
FIG. 1 is a plan view of a section steel joist structure for supporting a splayed brace at an end of a section steel according to the present invention;
FIG. 2 is an elevation view of the sectional steel joist structure for the splayed brace of the sectional steel support end of the present invention;
FIG. 3 is a schematic view showing the connection between a first column and a first joist in the section steel joist structure for the splayed bracing of the section steel supporting end of the present invention;
FIG. 4 is a schematic view showing the connection between a second column and a second joist in the structure of the section steel joist for the splay brace at the section steel supporting end of the present invention;
fig. 5 is a connection schematic diagram of the medium-sized steel support enclosing purlin and the concrete support of the shaped steel joist structure for the multi-splayed support of the shaped steel support end.
In the figure, 11 steel supports, 12 splayed supports, 13 steel support purlins, 14 concrete supports, 15-node conversion parts, 16 third corbels, 17 embedded parts, 2 first columns, 21 first corbels, 22 first reinforcing ribs, 3 first joists, 4 second joists, 5 connecting parts, 51 end plates, 52 flanges, 6 second columns, 61 second corbels, 62 second reinforcing ribs and 7 third joists are arranged in a surrounding mode.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to the attached drawings 1 and 2, the profile steel joist structure for the multi-splayed-strut position of the profile steel supporting end comprises a foundation pit inner supporting system consisting of a steel strut 11, a splayed strut 12, a profile steel supporting surrounding purlin 13 and a concrete strut 14, wherein the concrete strut 14 is circumferentially arranged in the foundation pit, the profile steel supporting surrounding purlin 13 is fixedly arranged on the inner wall of the concrete strut 14, and two ends of the steel strut 11 are respectively fixed on the inner wall of the profile steel supporting surrounding purlin 13 through the plurality of splayed struts 12; the section steel joist structure further comprises a first upright 2, a first joist 3 and a second joist 4; the first upright columns 2 are vertically arranged in the foundation pit, and the pair of first upright columns 2 are symmetrically positioned at two sides of one end of the steel support 11; the two ends of the first joist 3 are respectively lapped on the pair of first upright posts 2, one ends of the pair of second joists 4 are respectively lapped on the pair of first upright posts 2 correspondingly, and the other ends of the pair of second joists 4 are respectively lapped on the inner wall of the profile steel supporting surrounding purlin 13 through the connecting piece 5. The foundation pit inner support system can be erected by adopting the existing construction process according to the construction design requirements, and the construction process is not repeated. Bear the load of 11 one ends of steel shotcrete and a plurality of eight characters of steel shotcrete 12 through first joist 3 and second joist 4, first stand 2, first joist 3 and second joist 4 are set up to the both ends of steel shotcrete 11 adoption same mode and structure, and no longer the repeated description here has promoted the bearing capacity of support system in the foundation ditch, has reduced the problem of arranging more joist and stand in a plurality of eight characters of installation regions who props 12 simultaneously.
Referring to fig. 3, a first bracket 21 is fixedly mounted on the first upright 2 through a high-strength bolt, one end of the first joist 3 is fixedly mounted on the first bracket 21 through a high-strength bolt, so that the first joist 3 is vertically overlapped with the first upright 2, and one end of the second joist 4 is fixedly mounted on the first bracket 21 through a high-strength bolt, so that the second joist 4 is vertically overlapped with the first upright 2. The first bracket 21 is convenient for the lap joint of the first upright post 2, the first joist 3 and the second joist 4 through high-strength bolts, the disassembly and the assembly are convenient and quick, and the bearing capacity at the lap joint position is strong.
Referring to fig. 3, the first stiffener 22 is disposed at the corner of the first bracket 21, so as to further improve the reliability of the joint between the first column 2 and the first and second joists 3 and 4.
Referring to fig. 2, the connecting member 5 is an H-shaped steel member with end plates 51 welded to both ends thereof, a flange 52 of the H-shaped steel member is fixedly mounted on the section steel supporting purlin 13 by high-strength bolts, and the end plates 51 are fixedly mounted on the second joist 4 by high-strength bolts. The H-shaped steel component is simple in structure and high in bearing capacity, bolt holes are formed in the end plate 51 and the flange 52, and the high-strength bolts are combined for reinforcing connection, so that the connection reliability between the steel support surrounding purlin 13 and the second joist 4 can be guaranteed, and the structural strength and load transmission are guaranteed.
Referring to fig. 1, the pair of second joists 4 are arranged in parallel, the second joists 4 are arranged perpendicular to the first joists 3, the first joists 3 are arranged in parallel to the profile steel supporting enclosing purlin 13, so that the first joists 3, the pair of second joists 4 and the profile steel supporting enclosing purlin 13 enclose a supporting system in a rectangular structure. Through enclosing of the supporting system of the rectangular structure, steel members such as stand columns and joists are distributed dispersedly, and the problem that more joists and stand columns are arranged at a plurality of splayed struts 12 is solved.
Referring to fig. 1, one end of the second joist 4 is located outside a connecting node between one end of the splayed strut 12 and the steel strut 11, the other end of the second joist 4 is located inside a connecting node between the other end of the splayed strut 12 and the profile steel supporting surrounding purlin 13, and the middle part of the second joist 4 is lapped with the splayed strut 12. The second joist 4 and the side connecting rods of the splayed strut 12 are arranged in a staggered mode, so that the dispersing effect of the second joist 4 on the load of the splayed strut 12 can be improved.
Referring to fig. 1, a node conversion piece 15 is arranged at a connection node of the splayed strut 12 and the profile steel supporting enclosing purlin 13, one end of the node conversion piece 15 is fixedly connected with a rod piece of the splayed strut 12 through a high-strength bolt, and the other end of the node conversion piece 15 is fixedly connected with the profile steel supporting enclosing purlin 13 through a high-strength bolt. The node conversion piece 15 can adopt the same structural form as the connecting piece 5, and can also adopt other conventional node conversion pieces, and the reliable connection and the load transmission of the splayed strut 12 and the profile steel supporting purlin 13 are ensured through the node conversion piece 15.
Referring to fig. 1, a pair of second upright posts 6 is arranged in the steel support 11, the pair of second upright posts 6 are symmetrically located at two side portions of the steel support 11, a third joist 7 is erected between the pair of second upright posts 6, and two ends of the third joist 7 are respectively lapped with two sides of the steel support 11. The load of the steel support 11 is further dispersed through the third joist 7, the load is transmitted to the pair of second upright posts 6, and the structural stability of the steel support 11 is improved.
Referring to fig. 4, the second brackets 61 are fixedly mounted on the pair of second columns 6 through high-strength bolts, and the end portions of the third joists 7 are fixedly mounted on the second brackets 61 through high-strength bolts. The second bracket 61 is convenient for the lap joint of the second upright post 6 and the third joist 7 through high-strength bolts, the disassembly and the assembly are convenient and quick, and the bearing capacity at the lap joint position is strong.
Referring to fig. 4, the second stiffening rib 62 is disposed at the corner of the second bracket 61, so as to further improve the reliability of the lap joint between the second column 6 and the third joist 7.
Referring to the attached drawing 5, a third bracket 16 is arranged at the joint of the bottom of the profile steel supporting enclosing purlin 13, the bottom of the steel support 11 and the concrete support 14, one end of the profile steel supporting enclosing purlin 13 is fixedly connected with the steel support 11 through the third bracket 16 by a high-strength bolt, and the other end of the profile steel supporting enclosing purlin 13 and the third bracket 16 are both fixed on the concrete support 14 through an embedded part 17. The third bracket 16 transmits the load of the steel support 11 to the concrete support 14 through the steel support surrounding purlin 13, so that the stability of the structure and the load transmission are ensured.
Referring to fig. 1 to 4, the working principle of the present invention is:
a first joist 3 and a pair of second joists 4 are erected by a pair of first uprights 2, and a third joist 7 is erected by a pair of second uprights 6. The first joist 3 transmits the load to the first upright 2, the third joist 7 transmits the load to the second upright 6, and the first joist 3 and the third joist 7 are used for bearing the load of the steel support 11; second joist 4 supports purlin 13 with load transmission to first stand 2 and shaped steel, utilizes a pair of second joist 4 to undertake the load that the splayed propped 12 to satisfy the splayed and propped 12 department heavy in weight, the high load of deformation requirement supports the demand. Splayed strut 12 and second joist 4 enclose purlin 13 with the load transmission to the shaped steel support to enclose purlin 13 through the shaped steel support and transmit the load to concrete support 14, guaranteed that the support system has great bearing capacity in the whole foundation ditch.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A profile steel joist structure for a multi-splayed-strut position at the end of a profile steel support comprises a foundation pit inner support system consisting of a steel support (11), splayed struts (12), a profile steel support enclosing purlin (13) and a concrete support (14), wherein the concrete support (14) is circumferentially enclosed in the foundation pit, the profile steel support enclosing purlin (13) is fixedly arranged on the inner wall of the concrete support (14), and two ends of the steel support (11) are respectively fixed on the inner wall of the profile steel support enclosing purlin (13) through the plurality of splayed struts (12);
the method is characterized in that: the section steel joist structure further comprises a first upright post (2), a first joist (3) and a second joist (4); the first upright columns (2) are vertically arranged in the foundation pit, and the pair of first upright columns (2) are symmetrically positioned at two sides of one end of the steel support (11); the two ends of the first joist (3) are respectively lapped on the pair of first upright posts (2), one ends of the pair of second joists (4) are respectively lapped on the pair of first upright posts (2) correspondingly, and the other ends of the pair of second joists (4) are respectively lapped on the inner wall of the profile steel supporting enclosing purlin (13) through the connecting piece (5).
2. The section steel joist structure for a splayed section steel supporting end according to claim 1, wherein: first stand (2) on fixed mounting have first bracket (21), the one end fixed mounting of first joist (3) makes first joist (3) and first stand (2) perpendicular overlap joint on first bracket (21), the one end fixed mounting of second joist (4) makes second joist (4) and first stand (2) perpendicular overlap joint on first bracket (21).
3. The section steel joist structure for a splayed section steel supporting end according to claim 2, wherein: and a first stiffening rib (22) is arranged at the corner of the first bracket (21).
4. A section steel joist construction for a splayed section steel support end according to claim 1 or 2 characterised in that: the pair of second joists (4) are arranged in parallel, the second joists (4) are perpendicular to the first joists (3), the first joists (3) and the section steel support enclosing purlins (13) are arranged in parallel, and therefore the first joists (3), the pair of second joists (4) and the section steel support enclosing purlins (13) enclose a supporting system in a rectangular structure.
5. The section steel joist structure for a splayed section steel supporting end according to claim 4, wherein: one end of the second joist (4) is positioned at the outer side of a connecting node of one end of the splayed support (12) and the steel support (11), the other end of the second joist (4) is positioned at the inner side of a connecting node of the other end of the splayed support (12) and the profile steel support enclosing purlin (13), and the middle part of the second joist (4) is lapped with the splayed support (12).
6. A section steel joist construction for use at a splayed brace at a section steel support end as claimed in claim 1 or 5 wherein: a node conversion piece (15) is arranged at a connecting node of the splayed strut (12) and the section steel supporting enclosing purlin (13), one end of the node conversion piece (15) is fixedly connected with the splayed strut (12), and the other end of the node conversion piece (15) is fixedly connected with the section steel supporting enclosing purlin (13).
7. The section steel joist structure for a splayed section steel supporting end according to claim 1, wherein: the connecting piece (5) is an H-shaped steel member, two ends of the H-shaped steel member are respectively welded with an end plate (51), a flange (52) of the H-shaped steel member is fixedly installed on the section steel supporting enclosing purlin (13), and the end plate (51) is fixedly installed on the second joist (4).
8. A section steel joist construction for use at a splayed brace at a section steel support end as claimed in claim 1 or 5 wherein: the steel shotcrete device is characterized in that a pair of second stand columns (6) are arranged in the steel shotcrete (11), the pair of second stand columns (6) are symmetrically located at two side portions of the steel shotcrete (11), a third joist (7) is erected between the pair of second stand columns (6), and two ends of the third joist (7) are respectively in lap joint with two sides of the steel shotcrete (11).
9. The section steel joist structure for a splayed section steel supporting end according to claim 8, wherein: the pair of second upright posts (6) are fixedly provided with second brackets (61), and the end parts of the third joists (7) are fixedly arranged on the second brackets (61); and a second stiffening rib (62) is arranged at the corner of the second bracket (61).
10. The section steel joist structure for a splayed section steel supporting end according to claim 1, wherein: the joint of the bottom of the profile steel support enclosing purlin (13), the bottom of the steel support (11) and the concrete support (14) is provided with a third bracket (16), one end of the profile steel support enclosing purlin (13) is fixedly connected with the steel support (11) through the third bracket (16), and the other end of the profile steel support enclosing purlin (13) and the third bracket (16) are fixed on the concrete support (14) through embedded parts (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221047512.XU CN217782070U (en) | 2022-04-29 | 2022-04-29 | A shaped steel joist structure that is used for many splays of shaped steel support end to prop department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221047512.XU CN217782070U (en) | 2022-04-29 | 2022-04-29 | A shaped steel joist structure that is used for many splays of shaped steel support end to prop department |
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| CN217782070U true CN217782070U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221047512.XU Active CN217782070U (en) | 2022-04-29 | 2022-04-29 | A shaped steel joist structure that is used for many splays of shaped steel support end to prop department |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116695733A (en) * | 2023-06-26 | 2023-09-05 | 中铁四局集团有限公司 | Assembled bracket stiffening support structure and construction method thereof |
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2022
- 2022-04-29 CN CN202221047512.XU patent/CN217782070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116695733A (en) * | 2023-06-26 | 2023-09-05 | 中铁四局集团有限公司 | Assembled bracket stiffening support structure and construction method thereof |
| CN116695733B (en) * | 2023-06-26 | 2026-04-14 | 中铁四局集团有限公司 | Assembled bracket stiffening support structure and construction method thereof |
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