CN109457864A - A kind of prestressed truss structure - Google Patents
A kind of prestressed truss structure Download PDFInfo
- Publication number
- CN109457864A CN109457864A CN201811631348.5A CN201811631348A CN109457864A CN 109457864 A CN109457864 A CN 109457864A CN 201811631348 A CN201811631348 A CN 201811631348A CN 109457864 A CN109457864 A CN 109457864A
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- China
- Prior art keywords
- truss
- lower edge
- line
- pin
- arch
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention belongs to building structure fields, and in particular to a kind of prestressed truss structure, including two Pin wind up truss, and two Pin, which wind up between truss, several Pin jack truss, and several pairs of struts and a pair of of lower edge drag-line are arranged at the truss lower part of winding up every Pin, and lower edge drag-line is in convex-shaped formula；It winds up truss and respectively there is a Pin triangular concrete batter post in jack truss two sides, there are several pairs of suspension cables between concrete batter post and the truss that winds up, lower edge drag-line is connected by anchorage with arch truss, suspension cable is connected by anchorage with arch truss with concrete batter post, and strut upper and lower side is separately connected top arch truss and lower edge drag-line.The present invention can prevent occurring the failure of lower edge drag-line under high wind conditions, and the rigidity of structure will not die-off, and be not in that deformation is excessive, or even there is a situation where destroy；And the rigidity of structure can be increased, structural span is greatly increased, the space requirement of the more bucket wheel machines in coal scaffold field operation is met.
Description
Technical field
The invention belongs to building structure fields, and in particular to a kind of prestressed truss structure.
Background technique
According to national technical ability environmental requirement, closing transformation need to be carried out for newly-built and a large amount of built coal yards, to avoid coal
Suffer a loss in inclement weather and environmental pollution, the quantity and job requirements of bucket wheel machine determine it is newly-built and transformation awning across
Degree, super-span prestressing force slant-pull structure form meet space requirement when several bucket wheel machines work together just.
Existing truss string structure, including a Pin wind up truss, several pairs of struts and a pair of of last quarter rope, lead between the truss that winds up
Jack truss to be crossed to be connected, the prestressing force of downhaul makes truss generation allowance for camber of winding up, can reduce in the final amount of deflection of load flowering structure,
And by the stretching force of last quarter rope, strut is made to generate upward component, lead to wind up truss generation and the lower phase of external load effect
Anti- internal force and deformation, to form entire truss-string-structure and improve the rigidity of structure, strut provides elasticity branch to the truss that winds up
Support improves the stress performance for the truss that winds up.It can be seen that truss-string-structure can give full play to the strong tensile property of last quarter rope,
Be conducive to improve overall structure stress performance, the truss that makes to wind up is learnt from other's strong points to offset one's weaknesses by curved rigid member and last quarter rope tension member, is assisted
With work, the effect of every kind of structural material is given full play to.
Prestressing force truss-string-structure is from heavy and light and has good stress performance, thus in recent years, the structure greatly across
It is more and more applied in degree coal booth structure.But with the expansion of coal yard scale, the span of dry coal booth structure constantly adds
Greatly, winding up, to encircle truss be that rigidity needed for meeting its span need to be by increasing sagitta, increasing thickness or enlarging section specification
Mode, while last quarter rope power need to be increased, if being located under the harsher wind conditions such as Plain, coastal, not make last quarter rope exit work, structure
Overall stiffness reduce, malformation increase, or even destroy, also need to increase last quarter rope power again to resist wind suction, it is above several
The result of method can all bring the increase of steel using amount.
Summary of the invention
The purpose of the present invention is to provide a kind of prestressed truss structure, the space use for meeting super-span indoor coal storage yard is wanted
It asks, while solving wind suction flowering structure rigidity and not reducing, final the technical issues of reducing structural steel amount.
To achieve the above object, the technical solution that the present invention specifically provides are as follows: a kind of prestressed truss structure, including two Pin
Wind up truss, and two Pin, which wind up between truss, several Pin jack truss, every Pin wind up truss lower part have several pairs of struts and it is a pair of under
String drag-line, lower edge drag-line are in convex-shaped formula；
It winds up truss and respectively there is a Pin triangular concrete batter post in jack truss two sides, if having between concrete batter post and the truss that winds up
Dry to suspension cable, lower edge drag-line is connected by anchorage with arch truss, and suspension cable passes through anchorage and arch truss and concrete
Batter post is connected, and strut upper and lower side is separately connected top arch truss and lower edge drag-line.
This case compared with the existing technology, increases the application of two sides concrete batter post and suspension cable, and recessed last quarter rope changes
For convex form, by providing the vertical rigidity of structure span centre part after prestressed stretch-draw, two Pin's last quarter rope wind up truss
It is pulled on triangular concrete batter post by two sides suspension cable, can effectively limit the development of total internal force and deformation, triangle
Shape concrete batter post uses certain inclination angle, and the pulling force of oblique cord tensioning truss is resisted by own wt, effective to increase knot
Structure span；
For booth structure across coal greatly, roofing mostly uses light material, and is predominantly located in the harsher wind conditions such as Plain, coastal, wind
The case where load straight down that suction is self-possessed greater than roof structure and roof live load is composed, often occurs, and lower edge is convex
After the form of rope applies pretension, strut is made to generate upward component, also can effectively limiting structure internal force and deformation development.
The form of the convex rope of lower edge increases the headroom of inside configuration.
The arch truss is to guarantee that the space overall stiffness across beam-string structure uses space inverted triangle truss or space greatly
Inverted trapezoidal truss.
The strut is round tube or rectangular tube, and the connection of arch truss and top wind resistance rope or lower edge drag-line is hinge
It connects.
Preferably, the overall stiffness and economy for encircleing the thickness effect of the truss system, can choose 1/35-the 1/ of span
40。
Preferably, the rise of the convex rope of lower edge influences the overall stiffness and wind resistance energy-absorbing power of the system, optional to take last quarter rope
1/45-the 1/50 of span.
Preferably, the angle of oblique cord influences the overall stiffness of the system and the height of concrete batter post, the optional water intaking straight angle
15 ° -20 ° of degree.
Preferably, the inclination effect of the concrete batter post low counter-force of system concrete column and economy, can choose vertical angle
30 ° -40 ° of degree.
It is suitable for the closed prestressing force slant-pull structure body of super-span coal yard the invention has the advantages that: proposed by the present invention
System, relative to existing structure, increases the use of concrete batter post and suspension cable, considerably increases span scope, big
In the case of wind, due to the relationship of the convex rope of lower edge, the rigidity of structure will not die-off, and be not in that deformation is excessive, or even occurs
The case where destruction；The system also has many advantages, such as that structure height is small simultaneously, and progressive collapse-resisting ability is strong and good economy performance.
Detailed description of the invention
Fig. 1 is existing super-span prestressing force oblique-pulling truss structural schematic diagram；
Fig. 2 is a kind of suitable for the closed prestressing force slant-pull structure axonometric drawing of super-span coal yard；
Fig. 3 is a kind of suitable for the closed prestressing force slant-pull structure top view of super-span coal yard；
Fig. 4 is a kind of suitable for the closed prestressing force slant-pull structure elevation of super-span coal yard.
Figure label: 1. arch trusses；2. last quarter rope；3. last quarter rope strut；4. concrete batter post；5. suspension cable；6.
Jack truss.
Specific embodiment
Embodiment 1
Fig. 1 shows the schematic diagram of existing arch truss-string-structure, and existing arch truss-string-structure includes arched girder
Frame 1, last quarter rope 2, lower edge strut 3, from fig. 1, it can be seen that existing arch truss string structure only has a last quarter rope, the two of last quarter rope 2
End is fixed with arch truss 1, and the upper end of last quarter rope strut 3 is connect with arch truss 1, the lower end of last quarter rope strut 3 and last quarter rope 2
Connection.
Shown in Fig. 2 ~ 4, a kind of prestressed truss structure, including arch truss 1, last quarter rope 2, last quarter rope strut 3, concrete
Batter post 4, suspension cable 5, jack truss 6, from Fig. 2 ~ 4 it is found that the program, the both ends of last quarter rope 2 and arch truss 1 are fixed, last quarter rope
The upper end of strut 3 is connect with arch truss 1, and the lower end of last quarter rope strut 3 is connect with last quarter rope 2.The both ends of suspension cable 5 respectively with
Arch truss 1 and concrete batter post 4 are fixed.
Arch truss is space inverted triangle or rectangle truss in the present embodiment, and last quarter rope strut 3 is round tube and arch truss
1, the connection of lower edge drag-line 2 is hinged.
Existing structure is continued to increase with span, wind up encircle truss be meet its span require need to by increase sagitta, increase
It adds thickness or the mode of enlarging section specification, while last quarter rope power need to be increased, if being located under the harsher wind conditions such as Plain, coastal,
Not make last quarter rope exit work, the overall stiffness of structure reduces, and malformation increases, or even destroys, and also needs to increase lower edge again
Suo Lilai resists wind suction, and the result of the above several method can all bring the increase of steel using amount.New structure in this case
Truss two sides are disposed with concrete batter post and suspension cable, effectively improve structure tension performance, without increasing truss sagitta, thickness
And section, convex rope is disposed on the downside of truss, the overall stiffness that wind inhales flowering structure will not reduce, without by increase pretension come
It resists wind to inhale, can effectively control steel using amount.
Claims (7)
1. a kind of prestressed truss structure, it is characterised in that: wind up truss including two Pin, two Pin, which wind up between truss, several Pin
Several pairs of struts and a pair of of lower edge drag-line are arranged at jack truss, the truss lower part of winding up every Pin, and lower edge drag-line is in convex-shaped formula；Wind up truss
Respectively there is a Pin triangular concrete batter post with jack truss two sides, there are several pairs of suspension cables between concrete batter post and the truss that winds up,
Lower edge drag-line is connected by anchorage with arch truss, and suspension cable is connected by anchorage with arch truss with concrete batter post,
Strut upper and lower side is separately connected top arch truss and lower edge drag-line.
2. a kind of prestressed truss structure according to claim 1, it is characterised in that: the arch truss be guarantee greatly across
The space overall stiffness of beam string structure uses space inverted triangle truss or space inverted trapezoidal truss.
3. a kind of prestressed truss structure according to claim 1, it is characterised in that: the strut is round tube or rectangle
Pipe, and the connection of arch truss and top wind resistance rope or lower edge drag-line is hinged.
4. a kind of prestressed truss structure according to claim 1, it is characterised in that: the arch truss can choose span
1/35—1/40。
5. a kind of prestressed truss structure according to claim 1, it is characterised in that: the 1/ of the lower edge drag-line span
45—1/50。
6. a kind of prestressed truss structure according to claim 1, it is characterised in that: 15 ° of the suspension cable straight angle degree-
20°。
7. a kind of prestressed truss structure according to claim 1, it is characterised in that: the concrete batter post vertical angle
30°—40°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631348.5A CN109457864A (en) | 2018-12-29 | 2018-12-29 | A kind of prestressed truss structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631348.5A CN109457864A (en) | 2018-12-29 | 2018-12-29 | A kind of prestressed truss structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109457864A true CN109457864A (en) | 2019-03-12 |
Family
ID=65615400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811631348.5A Pending CN109457864A (en) | 2018-12-29 | 2018-12-29 | A kind of prestressed truss structure |
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| Country | Link |
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| CN (1) | CN109457864A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042540A (en) * | 2019-12-18 | 2020-04-21 | 徐州中煤百甲重钢科技股份有限公司 | Construction method for aerial butt joint of ground suspension cables of super-large-span prestressed pipe truss |
| CN112502341A (en) * | 2021-02-02 | 2021-03-16 | 北京市建筑工程研究院有限责任公司 | Construction method of overlength upward convex type stretching chord hybrid arched shell opening and closing roof structure |
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|---|---|---|---|---|
| CN201106226Y (en) * | 2007-11-16 | 2008-08-27 | 中国京冶工程技术有限公司 | Suspended cable hinge structure |
| CN202023255U (en) * | 2011-03-18 | 2011-11-02 | 中国民航大学 | Steel-wood mixed truss string structure |
| CN202543782U (en) * | 2012-04-09 | 2012-11-21 | 浙江东南网架股份有限公司 | Novel grounded cable arch structure |
| CN103321416A (en) * | 2013-05-29 | 2013-09-25 | 浙江东南网架股份有限公司 | Construction method for prestress of cable-stayed grid structure |
| 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 |
| CN105926850A (en) * | 2016-07-03 | 2016-09-07 | 山东建筑大学 | Circular cross cable truss structure |
| CN106978849A (en) * | 2017-05-27 | 2017-07-25 | 山东建筑大学 | A kind of cable arch structure |
-
2018
- 2018-12-29 CN CN201811631348.5A patent/CN109457864A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106226Y (en) * | 2007-11-16 | 2008-08-27 | 中国京冶工程技术有限公司 | Suspended cable hinge structure |
| CN202023255U (en) * | 2011-03-18 | 2011-11-02 | 中国民航大学 | Steel-wood mixed truss string structure |
| CN202543782U (en) * | 2012-04-09 | 2012-11-21 | 浙江东南网架股份有限公司 | Novel grounded cable arch structure |
| CN103321416A (en) * | 2013-05-29 | 2013-09-25 | 浙江东南网架股份有限公司 | Construction method for prestress of cable-stayed grid structure |
| 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 |
| CN105926850A (en) * | 2016-07-03 | 2016-09-07 | 山东建筑大学 | Circular cross cable truss structure |
| CN106978849A (en) * | 2017-05-27 | 2017-07-25 | 山东建筑大学 | A kind of cable arch structure |
Non-Patent Citations (1)
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| 吴鸣: "《桥梁工程》", 30 November 2009, 武汉：武汉大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042540A (en) * | 2019-12-18 | 2020-04-21 | 徐州中煤百甲重钢科技股份有限公司 | Construction method for aerial butt joint of ground suspension cables of super-large-span prestressed pipe truss |
| CN112502341A (en) * | 2021-02-02 | 2021-03-16 | 北京市建筑工程研究院有限责任公司 | Construction method of overlength upward convex type stretching chord hybrid arched shell opening and closing roof structure |
| CN112502341B (en) * | 2021-02-02 | 2021-04-20 | 北京市建筑工程研究院有限责任公司 | Construction method of overlength upward convex type stretching chord hybrid arched shell opening and closing roof structure |
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Application publication date: 20190312 |
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| RJ01 | Rejection of invention patent application after publication |