CN1122741C - Method for stretching guy of twisted steel cable for cable stayed bridge - Google Patents
Method for stretching guy of twisted steel cable for cable stayed bridge Download PDFInfo
- Publication number
- CN1122741C CN1122741C CN 98121417 CN98121417A CN1122741C CN 1122741 C CN1122741 C CN 1122741C CN 98121417 CN98121417 CN 98121417 CN 98121417 A CN98121417 A CN 98121417A CN 1122741 C CN1122741 C CN 1122741C
- Authority
- CN
- China
- Prior art keywords
- steel strand
- hole
- force
- tower
- anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a method for stretching a twisted steel wire guy cable of a cable stayed bridge, which comprises the steps: a first twisted steel wire 7<1> penetrates in a tower, an anchor hole and a hole of an anchor plate 3 arranged on the tower 9 and the anchor hole 6, and a clamping sheet 2 is installed; a sensor 4 having a display 5 is installed between a single hole anchoring device 8 and the anchor plate 3, and the twisted steel wire 7<1> is pre-stretched and applied with force by a force-applying device; a second twisted steel wire 7<2> to a nth twisted steel wire 7<n> orderly penetrate in the tower, the anchor hole and the hole of the anchor plate arranged on the tower and the anchor hole, the clamping sheet is installed, and the second twisted steel wire to the nth twisted steel wire 7<n> are pre-stretched and applied with force one by one by the force-applying device 1 according to reading numbers of F1...... Fn-1 on the display 5. The method causes the pre-stretching stress of each twisted steel wire on the guy cable to be uniform.
Description
Technical field
The present invention relates to a kind of method for stretching of guy of twisted steel cable for cable stayed bridge.
Background technology
In the installation of guy of twisted steel cable for cable stayed bridge, because the influence that relevant stressed member such as anchor slab, tower etc. deform after stressed, it is very big to be finished stress loss by the steel strand of the prestretching application of force to stretch-draw at first, if by same numerical value stretch-draw, to cause the whole stressed uniformity of rope steel strand very poor, this is that bridge design teacher never allow.Present job practices all is to adopt the stretch-draw that repeatedly circulates, and replenishes application of force value, so that the stress that each steel strand is subjected to is even gradually, not only take a lot of work, and poor effect, easily cause steel strand disrumpent feelings in advance, cause other steel strand to meet with stresses and increase, lower the life-span.
Summary of the invention
The object of the present invention is to provide and a kind ofly can make every stressed uniform job practices of steel strand prestretching on the cable stayed bridge suspension cable.
For reaching above-mentioned purpose, technical scheme of the present invention is: install the sensor that is connected with display additional between single hole ground tackle that first steel strand is installed and anchor slab; When the every stressed construction of steel strand prestretching, by assistor steel strand are strained the application of force, when assistor unloads, draw intermediate plate and clipped on the single hole ground tackle by steel strand retractions is counter again, like this, the sensor that the is positioned on single hole ground tackle lower end load that is under pressure makes the display that links to each other with sensor can reflect the prestretching stress value of these root steel strand exactly.Different readings according to display show that each the bar steel strand to forming suspension cable pursue the root prestretching application of force, finish until final single tendon stretch, and its concrete steps comprise:
1) first steel strand penetrated tower, anchor hole and be installed in the anchor slab hole on tower, the anchor hole, load onto intermediate plate;
2) sensor is installed between single hole ground tackle and the anchor slab, display is connected with sensor;
3) carry out the prestretching application of force for these steel strand with assistor;
4) with assistor after the unloading of first steel strand, the power value reading F on the reading displayed device
1
5) second steel strand penetrated tower, anchor hole and be installed in the anchor slab hole on tower, the anchor hole, load onto intermediate plate;
6) by the power value reading F that shows on first steel strand application of force unloading back display
1With assistor second steel strand carried out the prestretching application of force;
7) with assistor after the unloading of second steel strand, the power value reading F on the reading displayed device
2
8) by the 5th) the step mounting method installs the 3rd steel strand, the 4th steel strand successively to n bar steel strand, by the power value reading F that shows on the display
2, F
3F
N-1, pursue the root prestretching application of force for successively the 3rd steel strand, the 4th steel strand to n bar steel strand with assistor, finish until final single tendon stretch.
Because adopt technique scheme, the present invention has the following advantages:
Can show that each the bar steel strand to forming suspension cable pursue the root prestretching application of force according to the different power value readings of display, because after the prestretching application of force of second steel strand is intact, micro-deformation all can take place in relevant stressed member such as anchor slab, sensor, tower etc., cause the prestretching application of force value of first, second root steel strand to reduce, the power value reading demonstration of respective display also diminishes, but this does not influence construction, and the prestretching application of force value of the 3rd steel strand is provided on the contrary.Certainly, after the prestretching application of force of the 3rd steel strand was intact, the power value reading demonstration of display can diminish again, just like this, prestretching application of force value was provided for again the 4th steel strand.Like this, according to the different power value readings demonstrations of display whole rope steel strand are carried out the prestretching application of force by root, until final single end.Thereby make each bar steel strand stressed evenly, its stressed error≤5%, the stretch-draw that needn't repeatedly circulate has repeatedly again avoided steel strand to destroy because of unbalance stress causes in advance, has prolonged the application life of suspension cable.
Description of drawings
Fig. 1: the method for stretching schematic diagram of guy of twisted steel cable for cable stayed bridge of the present invention.
The specific embodiment
Below, the feature to the present invention is described further in conjunction with the accompanying drawings and embodiments.
Embodiment:
The method for stretching of a kind of guy of twisted steel cable for cable stayed bridge shown in Figure 1.Its step comprises:
1) with first steel strand 7
1Penetrate tower 9, anchor hole 6 and be installed in anchor slab 3 holes on tower 9, the anchor hole 6, load onto intermediate plate 2;
2) sensor 4 is installed between single hole ground tackle 8 and the anchor slab 3, display 5 is connected with sensor 4;
3) give these steel strand 7 with assistor 1
1Carry out the prestretching application of force;
4) with assistor 1 from first steel strand 7
1After the unloading, the power value reading F on the reading displayed device 5
1
5) with second steel strand 7
2Penetrate tower 9, anchor hole 6 and be installed in anchor slab 3 holes on tower 9, the anchor hole 6, load onto intermediate plate 2;
6) by the power value reading F that shows on first steel strand application of force unloading back display 5
1With 1 pair of second steel strand 7 of assistor
2Carry out the prestretching application of force;
7) with assistor 1 from second steel strand 7
2After the unloading, the power value reading F on the reading displayed device 5
2
8) by the 5th) the step mounting method installs the 3rd steel strand 7 successively
3, the 4th steel strand 7
4To n bar steel strand 7
n, press the reading F on the display 5
2F
3F
N-1Give the 3rd steel strand 7 successively with assistor 1
3, the 4th steel strand 7
4To n bar steel strand 7
nBy the root prestretching application of force, finish until final single tendon stretch.
Claims (1)
1, a kind of method for stretching of guy of twisted steel cable for cable stayed bridge.Its step comprises:
1) with first steel strand (7
1) penetrate tower (9), anchor hole (6) and be installed in anchor slab (3) hole on tower (9), the anchor hole (6), load onto intermediate plate (2);
2) sensor (4) is installed between single hole ground tackle (8) and the anchor slab (3), display (5) is connected with sensor (4);
3) give these steel strand (7 with assistor (1)
1) carry out the prestretching application of force;
4) with assistor (1) from first steel strand (7
1) after the unloading, the power value reading F on the reading displayed device (5)
1
5) with second steel strand (7
2) penetrate tower (9), anchor hole (6) and be installed in anchor slab (3) hole on tower (9), the anchor hole (6), load onto intermediate plate (2);
6) go up the power value reading F that shows by first steel strand application of force unloading back display (5)
1With assistor (1) to second steel strand (7
2) carry out the prestretching application of force;
7) with assistor (1) from second steel strand (7
2) after the unloading, the power value reading F on the reading displayed device (5)
2
8) by the 5th) the step mounting method installs the 3rd steel strand (7 successively
3), the 4th steel strand (7
4) to n bar steel strand (7
n), press display (5) and go up the power value reading F that shows
2, F
3F
N-1, give the 3rd steel strand (7 successively with assistor (1)
3), the 4th steel strand (7
4) to n bar steel strand (7
n) by the root prestretching application of force, finish until final single tendon stretch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121417 CN1122741C (en) | 1998-11-09 | 1998-11-09 | Method for stretching guy of twisted steel cable for cable stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121417 CN1122741C (en) | 1998-11-09 | 1998-11-09 | Method for stretching guy of twisted steel cable for cable stayed bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1253196A CN1253196A (en) | 2000-05-17 |
| CN1122741C true CN1122741C (en) | 2003-10-01 |
Family
ID=5227087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98121417 Expired - Fee Related CN1122741C (en) | 1998-11-09 | 1998-11-09 | Method for stretching guy of twisted steel cable for cable stayed bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1122741C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967796B (en) * | 2010-09-19 | 2011-11-23 | 湖南路桥建设集团公司 | Method for arranging parallel steel wire stay cable |
| CN104099874B (en) * | 2014-07-28 | 2016-03-23 | 上海市城市建设设计研究总院 | Using antiskid key as the stretch-draw construction method of the guy of twisted steel cable of locking device |
| CN109024310B (en) * | 2018-06-20 | 2020-09-04 | 广西交通科学研究院有限公司 | Construction method of external concrete beam bridge steel-concrete anchor capable of limiting local cracking |
| CN110241736A (en) * | 2019-06-17 | 2019-09-17 | 中交路桥华南工程有限公司 | Suspension cable Fast Installation construction method |
-
1998
- 1998-11-09 CN CN 98121417 patent/CN1122741C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1253196A (en) | 2000-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107655755B (en) | Testing method for anti-sliding bearing capacity of stay cable-cable clamp assembly part | |
| CN110469125B (en) | Parallel bundle steel strand stay cable optical fiber equal-tension intelligent tensioning device and method | |
| CN1122741C (en) | Method for stretching guy of twisted steel cable for cable stayed bridge | |
| CN109653531B (en) | External prestress steel strand connector and matched tensioning device | |
| CN212432397U (en) | Steel structure bridge steel arch rib vertical cable stress adjustment testing device | |
| CN102296829B (en) | Method for constructing three-dimensional cable net curtain wall | |
| CN1974366A (en) | Beam crane and its downward bent beam repairing method | |
| CN107956292A (en) | A kind of mixed type intelligence carbon fiber board | |
| CN219491099U (en) | Prestressed anti-stretch nondestructive testing device | |
| CN111735694A (en) | Vibration fatigue test system | |
| CN107227851A (en) | A kind of detachable anchorage device for prestressing force carbon plate tensioning | |
| CN116625819A (en) | Dynamic cable tension-torsion balance test method and dynamic cable test device | |
| Lin et al. | Test on shear behavior of less-tightened high-strength bolted connections | |
| CN113585088A (en) | Prestressed anchorage utensil for bridge among construction | |
| CN109083022B (en) | System and method for monitoring construction cable force uniformity of parallel steel strand stay cable | |
| CN113927728A (en) | Novel prestressed concrete mixed reinforcement pipe pile manufacturing device and method | |
| CN1008826B (en) | The drag-line anchor clamps | |
| JPH09217493A (en) | Device for automatic tension system for pc structure | |
| CN112461407A (en) | Stress detection method for prestressed tendon | |
| CN112098220A (en) | Self-balancing constant loading device for researching creep performance of steel pipe concrete member | |
| KR20020081196A (en) | Power anchorage system by one piece wedge type | |
| CN114319114B (en) | Improved stay cable equivalent tensioning construction method based on deformation control | |
| CN115305825A (en) | Prestressed reinforcement tensioning method for pier stud | |
| DE19536700C2 (en) | Method for tensioning a tension member from a plurality of individual elements | |
| CN220231277U (en) | Cable tension testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |