CN113389318A - Novel assembly type steel truss purline system - Google Patents
Novel assembly type steel truss purline system Download PDFInfo
- Publication number
- CN113389318A CN113389318A CN202110397875.XA CN202110397875A CN113389318A CN 113389318 A CN113389318 A CN 113389318A CN 202110397875 A CN202110397875 A CN 202110397875A CN 113389318 A CN113389318 A CN 113389318A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 55
- 239000010959 steel Substances 0.000 title claims abstract description 55
- 238000005452 bending Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0447—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section circular- or oval-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0486—Truss like structures composed of separate truss elements
- E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention provides a novel assembly type steel truss purline system, which comprises chord members, web members and vertical members; the chord comprises an upper chord and a lower chord, the upper chord is connected with the lower chord through a web member and a vertical rod to form a planar truss in the same vertical plane, the vertical rods are arranged at the left end and the right end of the chord, the upper end and the lower end of the vertical rod arranged at each end are respectively fixed with the upper chord and the lower chord, and connecting plates are transversely arranged on the upper chord and the lower chord; the upper end and the lower end of the web member are respectively connected with the upper chord member and the lower chord member through high-strength bolts through connecting plates, the left end and the right end of the upper chord member are respectively provided with a support, and the supports are connected with a steel structure main beam of a building. The novel assembly type steel truss purline system is used for industrial factory building roof spans of 12-24 m, has wide application range, can meet different selection requirements of users on roof structure types, and can achieve the use live load of 1.0-2.0 KN/m2The device is easy to transport and simple and rapid to assemble on site.
Description
Technical Field
The invention belongs to the technical field of integrated buildings, and particularly relates to a novel assembly type steel truss purline system.
Background
According to statistics of large-column-network industrial plants built for many years, the most common column spacing of a common industrial plant is 12-24 m. The large-column net industrial factory building mainly adopts the structural forms of a space steel net rack, a bolt ball or a welding ball, and has single structural form and higher manufacturing cost. When no suspension load exists, a light steel structure, namely a mode of combining a portal steel frame and a joist is adopted, but the steel consumption is large, and the different selection requirements of users on the structural style of the roof can not be met.
The industrial building factory building roof is a large number of profiled steel plates or light plate roofs. The span generally is 6m when the steel roof truss factory building adopts the roofing purlin, and light steel construction door-type steelframe roofing purlin span generally is 6.0 ~ 9.0m, and the industry factory building is because of technology operation requirement 12 ~ 24m column pitch, therefore the solid cold bending thin wall purlin of traditional can not satisfy the user to the diversified demand of roofing purlin pattern of structure.
Disclosure of Invention
The invention aims to provide a novel assembly type steel truss purline system suitable for a large-column-net industrial factory building, and aims to solve the problem that the span of a light steel structure door type steel frame roof purline does not meet the use requirement of a process factory building. Has the advantages of industrial assembly and economy, and is beautiful and elegant.
The purpose of the invention is realized by the following technical scheme:
a novel assembly type steel truss purline system comprises chord members, web members and vertical members;
the chord members comprise an upper chord member and a lower chord member, the upper chord member is connected with the lower chord member through a web member and a vertical rod, and the upper chord member, the lower chord member, the web member and the vertical rod form a plane truss in the same vertical plane;
the vertical rods are arranged at the left end and the right end of the chord, the upper end and the lower end of each vertical rod arranged at each end are respectively fixed with the upper chord and the lower chord, and the upper chord and the lower chord are respectively and transversely provided with a connecting plate; the upper end and the lower end of the web member are respectively connected with the upper chord member and the lower chord member through connecting plates by high-strength bolts; and supports are respectively arranged at the left end and the right end of the upper chord and are connected with a steel structure main beam of a building.
Furthermore, the chord member is made of square steel tubes through one-step forming.
Furthermore, the web members are made of round steel tubes which are formed in one step, and the ends of the two ends of each round tube are flattened.
Further, the web members are divided into a main web member and an end web member, and the web members are connected with the connecting plate through two high-strength bolts.
Furthermore, main web member comprises a plurality of continuous V font web members, and the connecting portion of two adjacent V font web members are main web member and upper chord fixed connection's node, and the point portion of V font is main web member and lower chord fixed connection's node.
Furthermore, the upper end of the main web member is connected with the connecting plate of the upper chord member through two high-strength bolts, and the lower end of the main web member is connected with the connecting plate of the lower chord member through two high-strength bolts.
Furthermore, the upper end of the main web member is connected with two adjacent connecting plates of the upper chord member through two high-strength bolts, and the lower end of the main web member is connected with two adjacent connecting plates of the lower chord member through two high-strength bolts.
Furthermore, the end web members are respectively arranged at the left end and the right end of the main web member and positioned outside the vertical rod, the upper part of the end web member arranged at each end is connected with the connecting plate of the upper chord member through a high-strength bolt, and the lower part of the end web member is fixedly connected with the lower chord member.
Further, the vertical rod is connected with the upper chord and the lower chord through high-strength bolts.
Compared with the prior art, the invention has the beneficial effects that:
1. the novel assembly type steel truss purline system has good economical efficiency and applicability, can be used for industrial factory building roof spans of 12-24 m, can be used in cooperation with roof steel beams or steel trusses and color plates or light roof plates, has wide application range, can meet different selection requirements of users on roof structure types, and can achieve the use live load of 1.0-2.0 KN/m2；
2. The steel consumption can be reduced, the cost is saved, the design quality and the working efficiency are improved, the energy is saved, the environment is protected, the national requirements on the planning target of the development of the fabricated building are met, and the green building is realized;
3. the fully-assembled type can realize standardization, is convenient for factory processing and manufacturing, is suitable for transportation, and is simple and rapid to assemble on site;
4. the upper and lower chords of the assembled truss purline adopt square steel pipes, so that the transportation and the stability are facilitated, and the nodes are connected by adopting high-strength bolts, so that the site assembly is simple and rapid;
5. the traditional connecting plates are longitudinally arranged along the chord members, the connecting plates are transversely arranged, the end parts of the web members are flattened, and the connecting and the use are convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a novel assembly type steel truss purline system;
FIGS. 2-3 are schematic diagrams of intermediate nodes;
4-5 end node schematic diagrams;
FIG. 6 is a schematic view of a stent.
In the figure, 1, an upper chord 2, a lower chord 3, web members 4, vertical rods 5, connecting plates 6, positions 7 of supports among purlins, high-strength bolts 8, supports 31, main web members 32 and end web members are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance. Example (b):
as shown in fig. 1-6, the fabricated steel truss purlin system of the present invention includes chords, web members 3, and vertical members 4.
The chord member includes top chord 1 and lower chord 2, top chord 1 links to each other with lower chord 1 through web member 3 and montant 4, and top chord 1, lower chord 2, web member 3 and montant 4 constitute the plane truss in same vertical plane, and the atress is reasonable, and the node simple structure, construction convenience, economy is suitable for.
The vertical rods 4 are arranged at the left end and the right end of the chord, and the upper end and the lower end of each vertical rod 4 at each end are fixed with the upper chord 1 and the lower chord 2 through high-strength bolts 7. And the upper chord 1 and the lower chord 2 are both transversely provided with connecting plates 5. The upper end and the lower end of the web member 3 are respectively connected with the upper chord 1 and the lower chord 2 through connecting plates 5 by high-strength bolts 7; and the left end and the right end of the upper chord 1 are respectively provided with a support 8, and the supports 8 are connected with a steel structure main beam of a building.
According to the invention, the chord members are made of square steel tubes through one-step forming, so that the lateral rigidity and the stability are increased, and the transportation is facilitated.
The web members 3 are made of round steel tubes which are formed in one step, and the two ends of each round tube are flattened continuously so as to be convenient for connection. The web member 3 is divided into a main web member 31 and an end web member 32, the web member 3 is connected with the connecting plate 5 through the high-strength bolt 7, and the field assembly is simple and rapid. The main web member 31 is composed of a plurality of continuous V-shaped web members, the connecting parts of two adjacent V-shaped web members are the nodes of the main web member 31 and the upper chord 1, and the tip parts of the V-shaped web members are the nodes of the main web member 31 and the lower chord 2. The end web members 32 are respectively arranged at the left end and the right end of the main web member 32 and located outside the vertical rod 4, the upper part of the end web member 32 arranged at each end is connected with the connecting plate 5 of the upper chord 1 through a high-strength bolt 7, and the lower part of the end web member is fixedly connected with the lower chord 2.
The main web member 32 can be connected with the upper chord 1 and the lower chord 2 in two ways:
first, the upper end of the main web member 3 is connected with the connecting plate 5 of the upper chord 1 through a bolt 7, and the lower end is connected with the connecting plate 5 of the lower chord 2 through two high-strength bolts 7.
Secondly, the upper end of the main web member 31 is connected with two adjacent connecting plates 5 of the upper chord 1 through two high-strength bolts 7, and the lower end is connected with two adjacent connecting plates 5 of the lower chord 2 through two high-strength bolts 7.
The out-of-plane stability of the novel assembly type steel truss purline system is ensured by an out-of-plane support system, the span of the novel assembly type steel truss purline system is 12m, 18m, 21m or 24m, the distance is 1, the out-of-plane support system is 1.5m, and the novel assembly type steel truss purline system is used for a profiled steel sheet roof or is 3m and used for a light roof panel roof. The deflection is controlled to be L/200-L300, and is not less than L/400 when large suspension exists.
The upper chord member and the lower chord member of the light steel truss purline are made of Q235B grade steel or Q355B grade steel,
Q235B grade steel tensile, compression and bending strength design value f is 215N/mm2。
Q355B grade steel tensile, compression and bending strength design value f is 310N/mm2。
The web members 3 of the light steel truss purlines and the plane outer support are made of Q235B-grade steel, and the quality of the welding seam is of three grades. The welding rod adopts an E50xx model, and the quality grade of the welding seam is three grades. The design value f of tensile strength, compression strength and bending strength is 215N/mm2。
The novel connecting joint is arranged, the connecting plates 5 are transversely arranged, the traditional connecting plates are longitudinally arranged along the chord members, the end parts of the web members are flattened, the connecting purpose is convenient, and the web members are connected by high-strength bolts.
The assembled truss purline is used for the roof span of an industrial factory building and can reach 12-24 m, and can be used in a way that a roof steel beam or a steel truss and a color plate or a light roof plate are matched. The live load of the assembled truss purline can reach 1.0-2.0 KN/m 2. It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. The utility model provides a novel assembled steel truss purlin system which characterized in that: comprises a chord member, a web member (3) and a vertical rod (4);
the chord members comprise upper chord members (1) and lower chord members (2), the upper chord members (1) are connected with the lower chord members (2) through web members (3) and vertical rods (4), and the upper chord members (1), the lower chord members (2), the web members (3) and the vertical rods (4) form a plane truss in the same vertical plane;
the vertical rods (4) are arranged at the left end and the right end of the chord, the upper end and the lower end of each vertical rod (4) arranged at each end are respectively fixed with the upper chord (1) and the lower chord (2), and the upper chord (1) and the lower chord (2) are respectively and transversely provided with a connecting plate (5); the upper end and the lower end of the web member (3) are respectively connected with the upper chord member (1) and the lower chord member (2) through connecting plates (5) by high-strength bolts; and the left end and the right end of the upper chord (1) are respectively provided with a support (8), and the supports (8) are connected with a steel structure main beam of a building.
2. The novel assembled steel truss purline system of claim 1, wherein: the chord member is made of square steel tubes through one-step forming.
3. The novel assembled steel truss purline system of claim 1, wherein: the web members (3) are made of round steel tubes which are formed in one step, and the ends of the two ends of each round tube are flattened.
4. The novel assembled steel truss purline system of claim 1, wherein: the web members (3) are divided into main web members (31) and end web members (32), and the web members (3) are connected with the connecting plate (5) through high-strength bolts (7).
5. The novel assembled steel truss purlin system of claim 4, wherein: main web member (31) comprise a plurality of continuous V font web members, and the connecting portion of two adjacent V font web members do main web member (31) and upper chord (1) fixed connection's node, the point portion of V font does main web member (31) and lower chord (2) fixed connection's node.
6. The novel assembled steel truss purlin system of claim 5, wherein: the upper end of the main web member (31) is connected with the connecting plate (5) of the upper chord member (1) through a bolt (7), and the lower end of the main web member is connected with the connecting plate (5) of the lower chord member (2) through a group of high-strength bolts (7).
7. The novel assembled steel truss purlin system of claim 5, wherein: the upper end of the main web member (31) is connected with two adjacent connecting plates (5) of the upper chord (1) through two high-strength bolts (7), and the lower end of the main web member is connected with two adjacent connecting plates (5) of the lower chord (2) through two high-strength bolts (7).
8. The novel assembled steel truss purlin system of claim 4, wherein: end web member (32) set up respectively the left and right both ends of main web member (31) are located the outside of montant (4), set up and link to each other through high strength bolt (7) and connecting plate (5) of last chord member (1) in end web member (32) top of every one end, below and lower chord member (2) fixed connection.
9. The novel assembled steel truss purline system of claim 1, wherein: the vertical rod (4) is connected with the upper chord (1) and the lower chord (2) through a high-strength bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110397875.XA CN113389318A (en) | 2021-04-14 | 2021-04-14 | Novel assembly type steel truss purline system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110397875.XA CN113389318A (en) | 2021-04-14 | 2021-04-14 | Novel assembly type steel truss purline system |
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| Publication Number | Publication Date |
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| CN113389318A true CN113389318A (en) | 2021-09-14 |
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| CN202110397875.XA Pending CN113389318A (en) | 2021-04-14 | 2021-04-14 | Novel assembly type steel truss purline system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116136115A (en) * | 2023-03-24 | 2023-05-19 | 中国核电工程有限公司 | Roof truss supporting system of steam turbine room and arrangement method thereof |
| US12116781B1 (en) | 2023-08-11 | 2024-10-15 | Nantong Ouben Construction Technology Co., Ltd. | Web member for truss with high sectional strength and assembled truss |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775876A (en) * | 2010-01-28 | 2010-07-14 | 中国瑞林工程技术有限公司 | Spacial steel roof truss |
| WO2014042695A1 (en) * | 2012-09-17 | 2014-03-20 | Bluescope Building North America, Inc. | Truss system |
| CN105350716A (en) * | 2015-11-24 | 2016-02-24 | 江苏华海钢结构有限公司 | Cold-formed thin-walled type steel combined truss purline |
| CN208502789U (en) * | 2018-07-23 | 2019-02-15 | 中铁四院集团西南勘察设计有限公司 | Connector and duct pieces of shield tunnel connection structure between duct pieces of shield tunnel |
| CN209799161U (en) * | 2019-04-09 | 2019-12-17 | 浙江正泰新能源开发有限公司 | Truss roof purline structure and system |
| CN211736046U (en) * | 2019-10-08 | 2020-10-23 | 长春建筑学院 | Novel assembled truss purline |
| CN112240054A (en) * | 2020-10-21 | 2021-01-19 | 王维奇 | Structural unit body with self-stress function, truss structure system and manufacturing method |
-
2021
- 2021-04-14 CN CN202110397875.XA patent/CN113389318A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775876A (en) * | 2010-01-28 | 2010-07-14 | 中国瑞林工程技术有限公司 | Spacial steel roof truss |
| WO2014042695A1 (en) * | 2012-09-17 | 2014-03-20 | Bluescope Building North America, Inc. | Truss system |
| CN105350716A (en) * | 2015-11-24 | 2016-02-24 | 江苏华海钢结构有限公司 | Cold-formed thin-walled type steel combined truss purline |
| CN208502789U (en) * | 2018-07-23 | 2019-02-15 | 中铁四院集团西南勘察设计有限公司 | Connector and duct pieces of shield tunnel connection structure between duct pieces of shield tunnel |
| CN209799161U (en) * | 2019-04-09 | 2019-12-17 | 浙江正泰新能源开发有限公司 | Truss roof purline structure and system |
| CN211736046U (en) * | 2019-10-08 | 2020-10-23 | 长春建筑学院 | Novel assembled truss purline |
| CN112240054A (en) * | 2020-10-21 | 2021-01-19 | 王维奇 | Structural unit body with self-stress function, truss structure system and manufacturing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116136115A (en) * | 2023-03-24 | 2023-05-19 | 中国核电工程有限公司 | Roof truss supporting system of steam turbine room and arrangement method thereof |
| US12116781B1 (en) | 2023-08-11 | 2024-10-15 | Nantong Ouben Construction Technology Co., Ltd. | Web member for truss with high sectional strength and assembled truss |
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Address after: No. 1958, Chuangye street, automobile economic and Technological Development Zone, Changchun City, Jilin Province Applicant after: The Ninth Design and Research Institute of Machinery Industry Co.,Ltd. Address before: No. 1958, Chuangye street, automobile economic and Technological Development Zone, Changchun City, Jilin Province Applicant before: Machinery Industry Ninth Design and Research Institute Co.,Ltd. |
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