CN111364774A - Assembly tensioning process of large-span cable net - Google Patents
Assembly tensioning process of large-span cable net Download PDFInfo
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- CN111364774A CN111364774A CN202010156914.2A CN202010156914A CN111364774A CN 111364774 A CN111364774 A CN 111364774A CN 202010156914 A CN202010156914 A CN 202010156914A CN 111364774 A CN111364774 A CN 111364774A
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- cable
- cables
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- tensioning process
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
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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
- E04B7/14—Suspended roofs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3583—Extraordinary methods of construction, e.g. lift-slab, jack-block using permanent tensioning means, e.g. cables or rods, to assemble or rigidify structures (not pre- or poststressing concrete), e.g. by tying them around the structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
The invention discloses an assembly tensioning process of a large-span cable net, which comprises the steps of firstly assembling the cable net in a field, simultaneously installing curtain wall cables, then lifting bearing cables, tensioning 3 bearing cables at two ends respectively, finally tensioning stable cables, adjusting the cables according to an actual monitoring result, and organizing and checking. Compared with the prior art, the assembly tensioning process for the large-span cable net provided by the invention has the following advantages: the bearing cable and the stabilizing cable are designed by double cables, so that the lifting and tensioning difficulty is increased; the length of the screw is adjusted by adjusting the curtain wall cable, so that the construction errors of the ring truss and the main structure are offset; the construction efficiency is high, saves the time limit for a project.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to an assembly tensioning process of a large-span cable net.
[ background of the invention ]
In a conventional cable net assembling and tensioning process, a full framing is generally erected, a cable net is assembled on the framing, and then tensioning is performed. However, when the span of the cable net is large, construction measures for erecting a full scaffold are required, so that the cost is high, the construction period is long, the difficulty is very high when the stay cable with the length of 200 meters is laid on the frame body by a crane, the difficulty in hoisting the long cable to the support platform to be unfolded and assembled is also very high, and the conventional process cannot deal with the assembly tensioning of the large-span cable net.
[ summary of the invention ]
The invention aims to provide an assembly tensioning process for a large-span cable net, which can solve the technical problems related to the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an assembly tensioning process for a large-span cable net comprises the following steps:
firstly, assembling a steel ring truss, and paving a cable-laying road in a stand and a field simultaneously;
step two, adopting an automobile crane and a cable releasing disc to lay the bearing cable in place in a field, installing a cable clamp lower cover plate and clamping the bearing cable;
step three, building a crane walking channel;
step four, laying the stable cable in place in the field by adopting an automobile crane and a cable placing disc, installing a cable clamp upper cover plate, clamping the stable cable, and installing a curtain wall cable after the steel ring truss is folded;
fifthly, after the curtain wall cables are installed in place, lifting the bearing cables in place through a lifting tool, wherein the middle 43 bearing cables are directly lifted in place, a hinge pin is installed, and a hinge pin is installed after 3 bearing cables at two ends are screwed out by 30mm in advance;
step six, tensioning 3 bearing cables at two ends, and screwing an adjusting screw into the bearing cables for 30 mm;
step seven, installing a stable cable tensioning tool, and tensioning the stable cable in place;
and step eight, adjusting the inhaul cable according to the actual monitoring result, and organizing to check and accept.
Preferably, in the step one, the steel ring truss is in a structural form of a three-dimensional truss, the grid interval is 4m, the maximum size of the truss inner chord is P1600 × 60mm, and the nodes are connected in a penetration welding mode.
Preferably: in the first step, the steel ring truss is fixedly connected to the steel reinforced concrete column through a finished product fixing spherical hinge support.
Preferably: the bearing cable and the stabilizing cable are both high-vanadium closed cables.
Preferably: the bearing cable and the stabilizing cable are both of a double-cable structure.
Preferably: in the fourth step, the upper end of the curtain wall cable is fixed on the steel structure ring truss at the top, and the lower part of the curtain wall cable is fixed at the cantilever beam end of the outer ring of the first-layer top plate of the main structure.
Preferably: the curtain wall cable is a high-vanadium closed cable with the diameter of 48mm and 56 mm.
Preferably: the bearing cables and the stabilizing cables are connected in a crossing mode through cable clamps to form a saddle-shaped cable net for the roof.
Preferably: and in the eighth step, monitoring by using a come card TPS1000 type high-precision total station.
Compared with the prior art, the assembly tensioning process for the large-span cable net provided by the invention has the following advantages:
1. the bearing cable and the stabilizing cable are designed by double cables, so that the lifting and tensioning difficulty is increased;
2. the length of the screw is adjusted by adjusting the curtain wall cable, so that the construction errors of the ring truss and the main structure are offset;
3. the construction efficiency is high, saves the time limit for a project.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a flow chart of the assembly tensioning process of the large-span cable net of the invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides an assembly tension process for a large-span cable net, including the following steps:
firstly, assembling a steel ring truss, and paving a cable-laying road in a stand and a field simultaneously;
in the invention, the steel ring truss is in a structural form of a three-dimensional truss, the grid interval is 4m, the maximum size of the truss inner chord rod is P1600 × 60mm, the nodes are connected in a penetration welding mode, and the steel ring truss is fixedly connected to the steel reinforced concrete column through a finished product fixed spherical hinge support.
It should be further noted that, before the steel ring truss is assembled, the steel structure member needs to be processed and manufactured in a factory, then the steel structure member is transported to an engineering site, then the jig frame and the support tower frame are assembled on the site, and then the steel ring truss is assembled. In addition, when the cableway is laid, stand protection is needed.
Step two, adopting an automobile crane and a cable releasing disc to lay the bearing cable in place in a field, installing a cable clamp lower cover plate and clamping the bearing cable;
it is further required to be further explained that the bearing rope and the stabilizing rope are firstly manufactured in a cable factory and then transported to the site, meanwhile, an operation platform needs to be erected on the steel ring truss, and then the bearing rope and the stabilizing rope are placed at corresponding positions by utilizing a tower crane and a truck crane, wherein the bearing rope and the stabilizing rope are high-vanadium closed ropes, the ultimate tensile strength is 1570MPa, and the elastic modulus (1.6-1.7) × 105N/mm2The bearing cables and the stabilizing cables are of double-cable structures, the diameter of each bearing cable is 64mm, the number of the bearing cables is 49 × 2-98, the diameter of each stabilizing cable is 74mm, and the number of the stabilizing cables is 30 × 2-60.
Step three, building a crane walking channel;
step four, laying the stable cable in place in the field by adopting an automobile crane and a cable placing disc, installing a cable clamp upper cover plate, clamping the stable cable, and installing a curtain wall cable after the steel ring truss is folded;
it needs to be further explained that the upper end of the curtain wall cable is fixed on the steel structure ring truss at the top, the lower part of the curtain wall cable is fixed on the cantilever beam end of the outer ring of the first layer top plate of the main structure, high-vanadium closed cables with the diameters of 48mm and 56mm are adopted, and the number of the stay cables is 120. The bearing cables and the stabilizing cables are connected in a crossing mode through cable clamps to form a saddle-shaped cable net for the roof.
Fifthly, after the curtain wall cables are installed in place, lifting the bearing cables in place through a lifting tool, wherein the middle 43 bearing cables are directly lifted in place, a hinge pin is installed, and a hinge pin is installed after 3 bearing cables at two ends are screwed out by 30mm in advance;
step six, tensioning 3 bearing cables at two ends, and screwing an adjusting screw into the bearing cables for 30 mm;
step seven, installing a stable cable tensioning tool, and tensioning the stable cable in place;
and step eight, adjusting the inhaul cable according to the actual monitoring result, and organizing to check and accept.
It needs to be further explained that the laika TPS1000 type high-precision total station is adopted for monitoring, so that accuracy and stability of a structure test can be guaranteed, and a test precision requirement of a project is met.
Compared with the prior art, the assembly tensioning process for the large-span cable net provided by the invention has the following advantages:
1. the bearing cable and the stabilizing cable are designed by double cables, so that the lifting and tensioning difficulty is increased;
2. the length of the screw is adjusted by adjusting the curtain wall cable, so that the construction errors of the ring truss and the main structure are offset;
3. the construction efficiency is high, saves the time limit for a project.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. An assembly tensioning process of a large-span cable net is characterized in that: the method comprises the following steps:
firstly, assembling a steel ring truss, and paving a cable-laying road in a stand and a field simultaneously;
step two, adopting an automobile crane and a cable releasing disc to lay the bearing cable in place in a field, installing a cable clamp lower cover plate and clamping the bearing cable;
step three, building a crane walking channel;
step four, laying the stable cable in place in the field by adopting an automobile crane and a cable placing disc, installing a cable clamp upper cover plate, clamping the stable cable, and installing a curtain wall cable after the steel ring truss is folded;
fifthly, after the curtain wall cables are installed in place, lifting the bearing cables in place through a lifting tool, wherein the middle 43 bearing cables are directly lifted in place, a hinge pin is installed, and a hinge pin is installed after 3 bearing cables at two ends are screwed out by 30mm in advance;
step six, tensioning 3 bearing cables at two ends, and screwing an adjusting screw into the bearing cables for 30 mm;
step seven, installing a stable cable tensioning tool, and tensioning the stable cable in place;
and step eight, adjusting the inhaul cable according to the actual monitoring result, and organizing to check and accept.
2. The assembly tensioning process of the large-span cable net according to claim 1, wherein in the step one, the steel ring truss is in a structural form of a three-dimensional truss, the grid interval is 4m, the maximum size of the truss inner chord is P1600 × 60mm, and the nodes are connected in a penetration welding mode.
3. An assembly tension process of a large-span cable net according to claim 1 or 2, characterized in that: in the first step, the steel ring truss is fixedly connected to the steel reinforced concrete column through a finished product fixing spherical hinge support.
4. The assembly tensioning process of the large-span cable net according to claim 1, characterized in that: the bearing cable and the stabilizing cable are both high-vanadium closed cables.
5. The assembly tensioning process of the large-span cable net according to claim 4, characterized in that: the bearing cable and the stabilizing cable are both of a double-cable structure.
6. The assembly tensioning process of the large-span cable net according to claim 1, characterized in that: in the fourth step, the upper end of the curtain wall cable is fixed on the steel structure ring truss at the top, and the lower part of the curtain wall cable is fixed at the cantilever beam end of the outer ring of the first-layer top plate of the main structure.
7. The assembly tensioning process of the large-span cable net according to claim 6, characterized in that: the curtain wall cable is a high-vanadium closed cable with the diameter of 48mm and 56 mm.
8. The assembly tensioning process of the large-span cable net according to claim 1, characterized in that: the bearing cables and the stabilizing cables are connected in a crossing mode through cable clamps to form a saddle-shaped cable net for the roof.
9. The assembly tensioning process of the large-span cable net according to claim 1, characterized in that: and in the eighth step, monitoring by using a come card TPS1000 type high-precision total station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156914.2A CN111364774A (en) | 2020-03-09 | 2020-03-09 | Assembly tensioning process of large-span cable net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010156914.2A CN111364774A (en) | 2020-03-09 | 2020-03-09 | Assembly tensioning process of large-span cable net |
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| Publication Number | Publication Date |
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| CN111364774A true CN111364774A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010156914.2A Pending CN111364774A (en) | 2020-03-09 | 2020-03-09 | Assembly tensioning process of large-span cable net |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445755A (en) * | 2021-04-21 | 2021-09-28 | 上海海勃膜结构股份有限公司 | Tension forming construction method suitable for rhombic grid cable net |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09242191A (en) * | 1996-03-07 | 1997-09-16 | Tomoe Corp | Construction of large span structure |
| CN101029518A (en) * | 2007-03-23 | 2007-09-05 | 北京城建集团有限责任公司 | Construction of large-span two-way string-tensioning steel house frame |
| CN205382566U (en) * | 2016-02-05 | 2016-07-13 | 中国航空规划设计研究总院有限公司 | Whole stretch -draw awning of detachable large -span prestressing force |
-
2020
- 2020-03-09 CN CN202010156914.2A patent/CN111364774A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09242191A (en) * | 1996-03-07 | 1997-09-16 | Tomoe Corp | Construction of large span structure |
| CN101029518A (en) * | 2007-03-23 | 2007-09-05 | 北京城建集团有限责任公司 | Construction of large-span two-way string-tensioning steel house frame |
| CN205382566U (en) * | 2016-02-05 | 2016-07-13 | 中国航空规划设计研究总院有限公司 | Whole stretch -draw awning of detachable large -span prestressing force |
Non-Patent Citations (2)
| Title |
|---|
| 张晋勋: "国家速滑馆大跨度马鞍形索网结构关键施工技术", 《施工技术》 * |
| 高树栋: "国家速滑馆屋面环桁架安装方案研究", 《建筑技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445755A (en) * | 2021-04-21 | 2021-09-28 | 上海海勃膜结构股份有限公司 | Tension forming construction method suitable for rhombic grid cable net |
| CN113445755B (en) * | 2021-04-21 | 2023-03-07 | 上海海勃膜结构股份有限公司 | Tension forming construction method suitable for rhombic grid cable net |
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Application publication date: 20200703 |