CN105421640A - Truss with span larger than 150 m and construction method thereof - Google Patents
Truss with span larger than 150 m and construction method thereof Download PDFInfo
- Publication number
- CN105421640A CN105421640A CN201510811986.5A CN201510811986A CN105421640A CN 105421640 A CN105421640 A CN 105421640A CN 201510811986 A CN201510811986 A CN 201510811986A CN 105421640 A CN105421640 A CN 105421640A
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- truss
- cable wire
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- span
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/08—Vaulted roofs
-
- 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
- E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention disclose a truss with a span larger than 150 m and a construction method thereof, and belongs to the technical field of building construction. The truss comprises a foundation I, an arc-shaped huge truss body arranged on the foundation I and a roofing system arranged on a huge truss body surface layer, the top of the huge truss body is provided with a steel rope I used for stretching, the two ends of the steel rope I are connected with the huge truss body, the middle part of the steel rope I is connected with the top of the huge truss body through multiple steel brace rods which are arranged at intervals, and the bottom of the huge truss body is provided with a prestress structure. According to the truss with the span larger than 150 m and the construction method thereof, according to the characteristic of trapezoidal stacking, the multi-level prestress steel rope structure design is combined, the self weight of the huge truss can be further decreased, materials are saved, and the economical and applicable large-span truss structure is achieved.
Description
Technical field
The invention belongs to technical field of building construction, relate to truss and construction method thereof that a kind of span that a kind of trussed construction, particularly huge truss and multi-level prestressed cable be combined into is greater than 150 meters.
Background technology
Stock yard, power plant, mining stockyard etc. have the industrial and mining enterprises of airborne dust side effect, by the face of stricter environmental requirement, add a cover closed airborne dust under needing not stopping production condition.Because material storage space is huge, generally triangular in shape or trapezoidal windrow, often needs the roof structure designing large span.
But, when closing this ladder stockpile field, generally adopt space grid structure more.Its space grid structure technology is ripe, and is extensively applied at home, but this space truss structure has the problems such as many, the on-the-spot amount of high-altitude operation of rod member are large, quality examination is difficult.It is generally acknowledged, when span is greater than 100m, the economic index of its space truss structure is not high.At this moment again huge truss structure is proposed, it belongs to plane stress system, roof load is concentrated by purlin system and is passed in huge truss structure, the bearing capacity of huge truss is fully played, there is self component characteristics of compact layout, bearing capacity is large, negligible amounts, and post is apart from the advantage reaching more than 20m.But, along with the further increase of windrow span, the physical dimension of huge truss will certainly be increased, not only cause its deadweight very heavy, and consume a large amount of steel.
Therefore, be necessary the feature for trapezoidal windrow, propose the large-span truss structure be suitable for more economically.
Summary of the invention
In view of this, a kind of span is the object of the present invention is to provide to be greater than the truss of 150 meters, for the feature for trapezoidal windrow, and in conjunction with multi-level prestressed cable structure design, huge truss deadweight can be reduced further, economize on material, to realize the large-span truss structure be suitable for more economically.Meanwhile, the present invention also provides a kind of span to be greater than the construction method of 150 meters of truss.
For achieving the above object, the present invention is achieved through the following technical solutions:
The invention provides the truss that a kind of span is greater than 150 meters, comprise basis I, be located at the arc huge truss on basis I and be located at the Roof system on huge truss top layer, the top of described huge truss is provided with the cable wire I for stretch-draw, the two ends of described cable wire I are connected with huge truss respectively, between intermediate portion and the top of huge truss by several, spaced apart steel strut is connected, the bottom of described huge truss is provided with prestressed structure.
Further, described prestressed structure comprises and to be symmetrically arranged and for the cable wire II of stretch-draw, one end of arbitrary described cable wire II is connected with huge truss, and its other end is connected with basis II.
Further, the distance between described basic I and basis II can be determined according to the span of the stretching force size of cable wire II and huge truss.
Further, described prestressed structure comprises the cable wire II for stretch-draw, and the two ends of described cable wire II are connected with huge truss respectively, and intermediate portion is provided with several, spaced apart basic II, described basic II for supporting this cable wire II.
Further, the described quantity and spacing of basic II can be determined according to the span of huge truss.
Further, described cable wire II is provided with protection tube, and this protection tube is steel pipe, and its inside is filled with anticorrosion butter.
Span is greater than a construction method for 150 meters of truss, comprises the steps:
Step 1) construction basis I and II;
Step 2) huge truss is arranged on basis I, form an arcuate structure;
Step 3) cable wire I is connected with huge truss with steel strut, cable wire II is connected with huge truss and basis II;
Step 4) cable wire II is carried out stretch-draw in the position near basis I;
Step 5) cable wire I is carried out stretch-draw;
Step 6) alternately repeat step 4) and step 5), until huge truss adjustment is complete;
Step 7) Roof system and other roof building accessories are installed.
Span is greater than a construction method for 150 meters of truss, comprises the steps:
Step 1) construction basis I and II;
Step 2) huge truss is arranged on basis I, form an arcuate structure;
Step 3) cable wire I is connected with huge truss with steel strut, the two ends of cable wire II are connected with huge truss respectively, in the middle part of it, are provided with the basis II supporting it;
Step 4) cable wire II is carried out stretch-draw in the position near basis I;
Step 5) cable wire I is carried out stretch-draw;
Step 6) alternately repeat step 4) and step 5), until huge truss adjustment is complete;
Step 7) Roof system and other roof building accessories are installed;
Further, described step 6) in alternately repeat step 4), 5) order and number of times be adjustable.
Further, described cable wire II is provided with protection tube, and this protection tube is steel pipe, and its inside is filled with anticorrosion butter.
The invention has the beneficial effects as follows: one is that the present invention adopts huge truss structure, there is post apart from large, bearing capacity is high, its roof load is concentrated by purlin system and is passed in huge truss structure, the bearing capacity of huge truss is fully played, and for the feature of trapezoidal windrow, in conjunction with multi-level prestressed cable structure design, huge truss deadweight can be reduced further, economize on material, to realize the large-span truss structure be suitable for more economically; Two is curved outline shapes that the present invention adopts, and can make itself and indoor windrow profile similarity by multi-level prestress steel Cable Structure, improves interior space utilization rate; Three is stretch-draw effects that the present invention passes through prestressed cable in batches, and the steel work intensity of huge truss can be fully utilized, and Roof stiffness is large, is out of shape little, can obtains good economy.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized by manual below and obtain.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is the schematic diagram of truss embodiment one of the present invention;
Fig. 2 is the schematic diagram of truss embodiment two of the present invention;
Reference numeral: huge truss-1, basis I-2, cable wire I-3, cable wire II-4, steel strut-5, Roof system-6, basis II-7, windrow-8.
Detailed description of the invention
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail; Should be appreciated that preferred embodiment only in order to the present invention is described, instead of in order to limit the scope of the invention.
Embodiment one:
As shown in Figure 1, the truss that a kind of span is greater than 150 meters, comprise basis I 2, be located at the arc huge truss 1 on basis I 2 and be located at the Roof system 6 on huge truss 1 top layer, the top of described huge truss 1 is provided with the cable wire I 3 for stretch-draw, the two ends of described cable wire I 3 are connected with huge truss 1 respectively, between intermediate portion and the top of huge truss 1 by several, spaced apart steel strut 5 is connected, the quantity and spacing of described steel strut 5 can be determined according to the span of the stretching force size of cable wire I 3 and huge truss 1; The bottom of described huge truss 1 is provided with prestressed structure, described prestressed structure comprises and to be symmetrically arranged and for the cable wire II 4 of stretch-draw, one end of arbitrary described cable wire II 4 is connected with huge truss 1, its other end is connected with basis II 7, by the prestressed stretch-draw effect of cable wire I 3 and cable wire II 4, form arc longspan structure system, its construction method comprises following operating procedure:
Step 1) the good basis I 2 of construction and basic II 7; Basis 2 is provided with the stone bolt be connected with huge truss 1;
Step 2) huge truss 1 is arranged on basis I 2 by stone bolt, form an arcuate structure system; According to the span of structure, huge truss 1 can be resolved into the sections of convenient transport and lifting.The length of every sections is 25m ~ 60m, adopts the splicing of high-strength bolt scene between sections and sections;
Step 3) cable wire I 3 is connected with huge truss 1 with steel strut 5, cable wire II 4 is connected with huge truss 1 and basis II 7; Namely one end of cable wire II 4 is connected with the bearing (unmarked) of huge truss 1, the other end be embedded in the basis II 7 of factory building inside or windrow 8 Reinforced Concrete Retaining Walls (unmarked) in;
Step 4) cable wire II 4 is carried out stretch-draw in the position near basis I 2; After cable wire II 4 prestressed stretch-draw, the span of huge truss 1 will reduce, and the distortion under effectively reducing Gravitative Loads;
Step 5) cable wire I 3 is carried out stretch-draw;
Step 6) alternately repeat step 4) and step 5), until huge truss 1 adjusts complete;
Step 7) Roof system 6 and other roof building accessories are installed on the top layer of huge truss 1.
In the present embodiment, in described step 1) in, the distance between its basis I 2 and basis II 7 can be determined according to the span of the stretching force size of cable wire II 4 and huge truss 1.
In the present embodiment, in described step 3) in, its cable wire II 4 is provided with protection tube, and this protection tube is steel pipe, and its inside is filled with anticorrosion butter, and is embedded in the equipment Foundations of factory building inside, is conducive to the application life extending cable wire II 4 like this.
In the present embodiment, described step 6) in, it alternately repeats step 4), 5) order and number of times be adjustable, by the different order of cable wire I 3 and cable wire II 4 and multi-time prestressed stretch-draw effect, change the span, component internal force distribution again etc. of huge truss; And under normal circumstances, prestressed steel structure can saving steel 10-20% when non-prestressed steel work adopts single stretch-draw on year-on-year basis; 20-40% can be reached during repeatedly stretching.
Embodiment two:
The present embodiment and the difference of embodiment one are that the two ends of described cable wire II 4 are all connected with huge truss 1, factory building inside being provided with several, all having spaced apart basic II 7 for supporting cable wire II 4, avoid cable wire II 4 long and produce excessive downward amount of deflection, and the described quantity and spacing of basic II 7 can be determined according to the span of huge truss 1.Its construction method and embodiment one similar, just do not repeating.
The present invention adopts huge truss structure, and have post apart from large, bearing capacity is high, and its roof load is concentrated by purlin system and is passed in huge truss structure, and the bearing capacity of huge truss is fully played.Meanwhile, the curved outline shape of this huge truss, makes itself and indoor windrow profile similarity by multi-level prestressed stretch-draw effect, improves the utilization rate of the interior space.In addition, also by Multi-stage prestress cable wire I and II, the steel work intensity of huge truss can be fully utilized, Roof stiffness is large, is out of shape little, can obtains good economy.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. the span truss that is greater than 150 meters, comprise basis I, be located at the arc huge truss on basis I and be located at the Roof system on huge truss top layer, it is characterized in that: the top of described huge truss is provided with the cable wire I for stretch-draw, the two ends of described cable wire I are connected with huge truss respectively, between intermediate portion and the top of huge truss by several, spaced apart steel strut is connected, the bottom of described huge truss is provided with prestressed structure.
2. the span truss that is greater than 150 meters according to claim 1, is characterized in that: described prestressed structure comprises and to be symmetrically arranged and for the cable wire II of stretch-draw, one end of arbitrary described cable wire II is connected with huge truss, and its other end is connected with basis II.
3. the span truss that is greater than 150 meters according to claim 2, is characterized in that: the distance between described basic I and basis II can be determined according to the span of the stretching force size of cable wire II and huge truss.
4. the span truss that is greater than 150 meters according to claim 1, it is characterized in that: described prestressed structure comprises the cable wire II for stretch-draw, the two ends of described cable wire II are connected with huge truss respectively, intermediate portion is provided with several, spaced apart basic II, described basic II for supporting this cable wire II.
5. the span truss that is greater than 150 meters according to claim 4, is characterized in that: the described quantity and spacing of basic II can be determined according to the span of huge truss.
6. according to the truss that the arbitrary described span of claim 2-5 is greater than 150 meters, it is characterized in that: described cable wire II is provided with protection tube, this protection tube is steel pipe, and its inside is filled with anticorrosion butter.
7. as described in as arbitrary in Claims 2 or 3, span is greater than a construction method for 150 meters of truss, it is characterized in that comprising the steps:
Step 1) construction basis I and II;
Step 2) huge truss is arranged on basis I, form an arcuate structure;
Step 3) cable wire I is connected with huge truss with steel strut, cable wire II is connected with huge truss and basis II;
Step 4) cable wire II is carried out stretch-draw in the position near basis I;
Step 5) cable wire I is carried out stretch-draw;
Step 6) alternately repeat step 4) and step 5), until huge truss adjustment is complete;
Step 7) Roof system and other roof building accessories are installed.
8. as described in as arbitrary in claim 4 or 5, span is greater than a construction method for 150 meters of truss, it is characterized in that comprising the steps:
Step 1) construction basis I and II;
Step 2) huge truss is arranged on basis I, form an arcuate structure;
Step 3) cable wire I is connected with huge truss with steel strut, the two ends of cable wire II are connected with huge truss respectively, in the middle part of it, are provided with the basis II supporting it;
Step 4) cable wire II is carried out stretch-draw in the position near basis I;
Step 5) cable wire I is carried out stretch-draw;
Step 6) alternately repeat step 4) and step 5), until huge truss adjustment is complete;
Step 7) Roof system and other roof building accessories are installed.
9. be greater than the construction method of 150 meters of truss according to the arbitrary described span of claim 7 or 8, it is characterized in that: described step 6) in alternately repeat step 4), 5) order and number of times be adjustable.
10. be greater than the construction method of 150 meters of truss according to the arbitrary described span of claim 7 or 8, it is characterized in that: described cable wire II is provided with protection tube, this protection tube is steel pipe, and its inside is filled with anticorrosion butter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510811986.5A CN105421640A (en) | 2015-11-20 | 2015-11-20 | Truss with span larger than 150 m and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510811986.5A CN105421640A (en) | 2015-11-20 | 2015-11-20 | Truss with span larger than 150 m and construction method thereof |
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| Publication Number | Publication Date |
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| CN105421640A true CN105421640A (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510811986.5A Pending CN105421640A (en) | 2015-11-20 | 2015-11-20 | Truss with span larger than 150 m and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116378422A (en) * | 2023-05-18 | 2023-07-04 | 江苏沪武建设集团有限公司 | Large-span tensioning steel structure and construction method |
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| CN104110086A (en) * | 2014-05-23 | 2014-10-22 | 浙江东南网架股份有限公司 | Suspended dome and plane prestress combined structure, tensioning tool and construction method |
| CN104847017A (en) * | 2015-05-25 | 2015-08-19 | 中国航空规划建设发展有限公司 | Novel prestress industrial stockyard canopy structure and method for constructing same |
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| JP2597910B2 (en) * | 1989-05-16 | 1997-04-09 | 清水建設株式会社 | Top structure of dome frame |
| CN2095899U (en) * | 1991-07-18 | 1992-02-12 | 张玉珉 | Arched light steel tube room frame |
| JPH0835258A (en) * | 1994-07-21 | 1996-02-06 | Tomoe Corp | Stretch chord beam structure of roof structure |
| WO2003087486A1 (en) * | 2002-04-12 | 2003-10-23 | Strarch Industries Pty Ltd | Roof structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116378422A (en) * | 2023-05-18 | 2023-07-04 | 江苏沪武建设集团有限公司 | Large-span tensioning steel structure and construction method |
| CN116378422B (en) * | 2023-05-18 | 2024-02-02 | 江苏沪武建设集团有限公司 | Large-span tensioning steel structure and construction method |
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Application publication date: 20160323 |