CN104457537B - It is a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III - Google Patents
It is a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III Download PDFInfo
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- CN104457537B CN104457537B CN201410595865.7A CN201410595865A CN104457537B CN 104457537 B CN104457537 B CN 104457537B CN 201410595865 A CN201410595865 A CN 201410595865A CN 104457537 B CN104457537 B CN 104457537B
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- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 210000002435 tendon Anatomy 0.000 claims 1
- 239000012634 fragment Substances 0.000 abstract description 7
- 238000009417 prefabrication Methods 0.000 abstract description 5
- 210000003205 muscle Anatomy 0.000 abstract description 4
- 238000004886 process control Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention belongs to the dual-direction pre-tensioning system prestressed track plate prefabrication technical field of the plate-type non-fragment orbits of high-speed railway CRTS III, and in particular to a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III.The problem of solving to the types of CRTS III dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection, detection of the present invention to stretching bed seat deflection, determine in the dual-direction pre-tensioning system prestressed track plate prefabrication technical process control of the plate-type non-fragment orbits of CRTS III, the influence that effective prestress is deformed to stretching bed seat, intensity, bending rigidity to the stretch-drawing beam of each installation need effective checking, ensure the tensioning quality of track slab prestress muscle with this.
Description
Technical field
The invention belongs to the dual-direction pre-tensioning system prestressed track plate prefabrication technology of the plate-type non-fragment orbits of high-speed railway CRTS III
Field, and in particular to a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III.
Background technology
The plate-type non-fragment orbits of CRTS III are the newest nothings brand-new, with entirely autonomous intellectual property developed of China
Tiny fragments of stone, coal, etc. track structure system, the type pretensioning prestressed concrete track plates of CRTS III are the weights of the plate-type ballastless track structures of CRTS III
Part is wanted, is laid in factorial praluction, then to scene.
In order to ensure the vertically and horizontally deformed bar tensioning in track plates to design load, while ensureing every presstressed reinforcing steel
Uniform force, should have enough intensity, rigidity and stability, vertical, horizontal Deformation control to stretching bed seat requirement：Design load
The lower pedestal deflection of effect should be considered as a whole with stretch-drawing beam deformation, and the suggestion of both comprehensive deformations is not more than 1mm（Pedestal and crossbeam
Controlled by 0.5mm）, it is more beneficial for stretching force uniformity.Vertical Deformation control：Avoid because its differential settlement causes template to become
Shape.
For in the dual-direction pre-tensioning system prestressed track plate prefabrication technical process control of the plate-type non-fragment orbits of CRTS III, pedestal
Influence to effective prestress is deformed very crucial, therefore, to the intensity of the stretching bed seat of each installation, rigidity and steady
The qualitative effective checking of needs, ensures the tensioning quality of track slab prestress muscle with this.It is particularly two-way to frame-type steel construction
The deformation observation of prestressed stretch-draw pedestal is particularly important.
The content of the invention
The problem of present invention is in order to solve to the types of CRTS III dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection,
There is provided a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III.
It is a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III, specific steps are such as
Under：1）Dial gauge mounting bracket, side 5, altogether 20, and check stability are installed on the inside of framework anchor beam.
2）Whole presstressed reinforcing steels and connector are installed.Presstressed reinforcing steel is the construction muscle for being embedded into track plates, and connector is phase
The frock of connection between adjacent two track plates and between track plates and tensioning beam.
3）Dial gauge is installed, checked after installation site and stability, reading is carried out and makes a record.
4）By the stressing sequence of pre-tensioned plate, pretension first is carried out by the 30% of stretching force to fixing end.
5）It is quiet to stop 10 minutes after the completion of the process of pretension 30%, start percentage meter reading and make a record.
6）Design proof stress is stretched to, two-way simultaneous tensioning is answered by regulation, quiet to stop 2min, latch frame anchor beam starts
Record percentage meter reading.
7）Control stress for prestressing point 3h, 5h, 10h, 12h, 15h record percentage meter reading, while recording jack tension power
Decline amount.
8）A jack oil return is put after 15h to " zero " controling power, percentage meter reading is recorded.
Technical measures
1st, calibration
Periodic verification and correction are made in observation process to all instruments used；
2nd, it is fixed
1. console used, equipment will be fixed.2. observation personnel will fix.3. the condition monitored（Proof stress）Basic phase
The same method 4. observed, point position are fixed.
3rd, deformation observation required precision
Deformation observation required precision is mainly defined by percentage meter reading.
4th, data analysis and assessment
Assumed condition：Designer is designed to continuous beam to stretching bed seat, and to reduce span, centre sets fulcrum（Buttress）, by
Then continuous beam, mid span moment and amount of deflection are smaller than simply supported beam, and middle buttress should be fixed（It is rigid）, should not occur position
Move, stretching bed seat is then considered by two length sections respectively, it is then the position for surveying each measuring point under various stresses that dial gauge, which is installed,
Move, reflection stretching bed seat deformation.
If 3. the percentage meter reading of span centre fulcrum is designated as, 1., 5. the percentage meter reading of two ends fulcrum is designated as respectively, 1. and 3.
Between percentage meter reading be designated as 2., 3. and 5. between percentage meter reading be designated as 4..
（1）First verify that the deformation of span centre fulcrum 3.（Displacement）It is consistent with the deformation of two ends fulcrum 1., 5., i.e., 3.-（①
+⑤）/ 2 ＜ 0.5mm.
（2）If meeting（1）Requirement, then verify 4.-（③+⑤）/ 2 ＜ 0.5mm and 2.-（③+①）/ 2 ＜ 0.5mm.
Explanation：It is above-mentioned that 1., 2., 3., 4., 5. etc. five data are whole tensioning（100% tensioning）The reading of 15 hours is waited afterwards
What the reading that number subtracts original state was drawn.
5th, stability analysis：
By the analysis of data logger, after whole tensioning terminates, same measurement point should be less than in the change of different time
0.1mm, can assert that pedestal has preferable stability.
Observe whether pedestal returns to original state after first round pulling test, for the first time may not exclusively, explanation can be with
Eliminate pedestal welding and deformation is installed；
After second wheel pulling test, pedestal returns to the second wheel pulling test original state, can determine that as elastic deformation.Together
The data of Shi Yaoyu first round pulling tests are analyzed.
Each stretching bed seat is installed after terminating, anchored end, stretching end are observed, it is considered to the tensioning of each pedestal
Beam has the constraint buttress for preventing deformation in span centre, and by normally saying, the correspondence position in the middle of each two mould should occur for maximum distortion
Put, dial gauge should be arranged in the inboard beams of pedestal, the observed quantity of displacement is used as using span centre and end relative deformation.
Detection of the present invention to stretching bed seat deflection, determines that the plate-type non-fragment orbits of CRTS III are dual-direction pre-tensioning system prestressed
In track plate prefabrication technical process control, the influence that effective prestress is deformed to stretching bed seat is opened to each installation
Drawing the intensity of crossbeam, bending rigidity needs effective checking, ensures the tensioning quality of track slab prestress muscle with this.
Brief description of the drawings
Fig. 1 is dial gauge scheme of installation.
Embodiment
It is a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III, specific steps are such as
Under：1）Dial gauge mounting bracket is installed on the inside of the framework anchor beam of square, dial gauge mounting bracket is arranged on framework anchor beam
On the mattess in outside, mounting bracket sets stable, do not contacted with framework anchor beam can, the uniform cloth in side of framework anchor beam
If 5, altogether 20, and check stability；
2）Whole presstressed reinforcing steels and connector are installed；
3）Dial gauge is installed to dial gauge mounting bracket, checked after installation site and stability, carries out reading and does easy to remember
Record；
4）By the stressing sequence of pre-tensioned plate, pretension first is carried out by the 30% of stretching force to fixing end；
5）It is quiet to stop 10 minutes after the completion of the process of pretension 30%, start percentage meter reading and make a record；
6）Design proof stress is stretched to, two-way simultaneous tensioning is answered by regulation, quiet to stop 2min, latch frame anchor beam starts
Record percentage meter reading；
7）Control stress for prestressing point 3h, 5h, 10h, 12h, 15h record percentage meter reading, while recording jack tension power
Decline amount；
8）A jack oil return is put after 15h to " zero " controling power, percentage meter reading is recorded；
9）Carry out data and stability analysis.
If 3. the percentage meter reading of span centre fulcrum is designated as, 1., 5. the percentage meter reading of two ends fulcrum is designated as respectively, 1. and 3.
Between percentage meter reading be designated as 2., 3. and 5. between percentage meter reading be designated as 4.,
In step 9,1）First verify that the deformation of span centre fulcrum 3. and the deformation of two ends fulcrum 1., 5. are consistent, both 3.-
（①+⑤）/ 2 ＜ 0.5mm；
2）If meeting above-mentioned requirements, verify 4.-（③+⑤）/ 2 ＜ 0.5mm and 2.-（③+①）/ 2 ＜ 0.5mm；
It is above-mentioned that 1., 2., 3., 4., 5. five data are to wait after whole tensioning the reading of 15 hours to subtract original state
What reading was drawn.
Two-wheeled be more than or equal to by above-mentioned 1）-9）Step complete to pre-stress rail plate stretching bed seat deformation detection.
First, staff organization is observed
1st, form should be made a record（Time, position, recorder）；
2nd, percentage meter reading and 4 people of record（East, south are responsible for by 2 people, and northwest has 2 people to be responsible for, and 2 are carried out when reading and record
It is mutually compound）；
3rd, oily top pressure force value records 1 people；
4th, the locking of oil top tensioning leading screw and 8 people of release；
5th, 1 people of scene unified command, the operation that take charge cable tensios control platform and each oil push up tensioning leading screw operating personnel refers to
Order.
6th, technology is responsible for 1 people, according to（One）Flow, commander read dial gauge.Basis, the weldering of framework anchor beam are observed simultaneously
Connect, connecting portion（Displacement, destroy, snap, crack）.
2nd, technical measures
1st, calibration
Periodic verification and correction are made in observation process to all instruments used；
2nd, it is fixed
Console used, equipment will be fixed.Observation personnel will fix.The condition of monitoring（Proof stress）It is essentially identical.See
The method of survey, point position are fixed.
3rd, deformation observation required precision
Deformation observation required precision is mainly defined by percentage meter reading.
4th, data analysis and assessment
Assumed condition：Designer is designed to continuous beam to stretching bed seat, and to reduce span, centre sets fulcrum（Buttress）, by
Then continuous beam, mid span moment and amount of deflection are smaller than simply supported beam, and middle buttress should be fixed（It is rigid）, should not occur position
Move, stretching bed seat is then considered by two length sections respectively, it is then the position for surveying each measuring point under various stresses that dial gauge, which is installed,
Move, reflection stretching bed seat deformation.
As shown in Figure 1.
1）First verify that the deformation of span centre fulcrum 3.（Displacement）It is consistent with the deformation of two ends fulcrum 1., 5., both 3.-（①+
⑤）/ 2 ＜ 0.5mm.
2）If meeting above-mentioned requirements, using 4.-（③+⑤）/ 2 ＜ 0.5mm;②-（③+①）/ 2 ＜ 0.5mm.
Explanation：It is above-mentioned that 1., 2., 3., 4., 5. etc. five data are whole tensioning（100% tensioning）The reading of 15 hours is waited afterwards
What the reading that number subtracts original state was drawn.
5th, stability analysis：
By the analysis of data logger, after whole tensioning terminates, same measurement point should be less than in the change of different time
0.1mm, can assert that pedestal has preferable stability.
Observe whether pedestal returns to original state after first round pulling test, for the first time may not exclusively, explanation can be with
Eliminate pedestal welding and deformation is installed；
After second wheel pulling test, pedestal returns to the second wheel pulling test original state, can determine that as elastic deformation.Together
The data of Shi Yaoyu first round pulling tests are analyzed.
Record data is as shown in the table：
3rd, safety measure
1. the anchoring of all presstressed reinforcing steels and connector, which will be installed to twist, is affixed to position;
2. all connectors will be installed in place
3. there should be safety guard above prestressing force, prevent that tensioning from holding weighing apparatus time cunning eye and hurting sb.'s feelings
4. having warning sign during observation, answer someone on duty, nearby should not be to stress pedestal stacked items, particularly coagulation handwoven cloth
Truck is should not the traveling on stretching bed seat.
Claims (3)
1. it is a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III, it is characterised in that：Tool
Body step is as follows：
1）Dial gauge mounting bracket is installed on the inside of the framework anchor beam framework of square, dial gauge mounting bracket is arranged on framework
On mattess on the inside of anchor beam, mounting bracket sets stable, and prestressed part referred to as frame is born on stretching bed seat top
Frame anchor beam, mounting bracket must not be contacted with the framework anchor beam of stress, and 5 percentages are uniformly laid in side on the inside of four framework anchor beams
Table, altogether 20, and check stability；
2）Whole presstressed reinforcing steels and connector are installed；
3）Dial gauge is installed to dial gauge mounting bracket, checked after installation site and stability, carries out reading and makes a record；
4）All dial gauges are respectively mounted completion, after inspection passes through, and follow procedure carries out initial tensioning to track plates, and initial tensioning is by thousand
Jin withstands on fixing end and single tendon stretch is carried out to presstressed reinforcing steel, and stretching force is the 30% of design stretching force；
5）It is quiet to stop 10 minutes after the completion of initial tensioning process, start percentage meter reading and make a record；
6）After the completion of percentage meter reading and record, start whole tensioning, whole tensioning uses integral tension, using framework anchor beam to whole
All vertically and horizontally presstressed reinforcing steels of individual pedestal, which are synchronized, is stretched to design stretching force, quiet to stop 2min, locks stretch-draw jack, opens
Begin record percentage meter reading；
7）Stretching bed seat holds lotus under the conditions of control stress for prestressing, and percentage meter reading is recorded respectively at 3h, 5h, 10h, 12h, 15h
Change, while recording jack tension power declines situation；
8）A jack oil return is put after 15h to " zero " controling power, percentage meter reading is recorded；
9）Carry out data and stability analysis.
2. according to claim 1 to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection side of the types of CRTS III
Method, it is characterised in that：In step 9）In, if 3. the percentage meter reading of span centre fulcrum is designated as, the percentage meter reading point of two ends fulcrum
Be not designated as 1., 5., 1. and 3. between percentage meter reading be designated as 2., 3. and 5. between percentage meter reading be designated as 4.,（1）First
Verify that the deformation of span centre fulcrum 3. is consistent with the deformation of two ends fulcrum 1., 5., i.e., 3.-（① + ⑤）/ 2 ＜ 0.5mm；
（2）If meeting above-mentioned requirements, verify 4.-（③ + ⑤）/ 2 ＜ 0.5mm and 2.-（③ + ①）/ 2 ＜
0.5mm ；It is above-mentioned that 1., 2., 3., 4., 5. five data are to wait after whole tensioning the reading of 15 hours to subtract the reading of original state
What number was drawn.
3. according to claim 2 to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection side of the types of CRTS III
Method, it is characterised in that：Two-wheeled be more than or equal to by above-mentioned 1）-9）What step was completed deforms to pre-stress rail plate stretching bed seat
Detection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595865.7A CN104457537B (en) | 2014-10-30 | 2014-10-30 | It is a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III |
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|---|---|---|---|
| CN201410595865.7A CN104457537B (en) | 2014-10-30 | 2014-10-30 | It is a kind of to the dual-direction pre-tensioning system prestressed rail plate tension pedestal deformation detection method of the types of CRTS III |
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| CN104457537A CN104457537A (en) | 2015-03-25 |
| CN104457537B true CN104457537B (en) | 2017-07-18 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824784A (en) * | 2010-04-30 | 2010-09-08 | 成都普罗米新科技有限责任公司 | Track slab detection frame and detection method thereof |
| CN101851884A (en) * | 2010-03-23 | 2010-10-06 | 中国建筑股份有限公司 | Construction method for paving CRTS I-type plate-type ballastless track plate in severe cold area |
| CN201865012U (en) * | 2010-10-25 | 2011-06-15 | 中建二局第三建筑工程有限公司 | Self-locking track slab anti-displacement device |
| CN202885760U (en) * | 2012-10-29 | 2013-04-17 | 苏州市中瑞模具有限公司 | Deformation detection tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3315101B2 (en) * | 1999-10-29 | 2002-08-19 | 株式会社カネコ | Track measuring instrument for track laying and track slab measuring instrument |
-
2014
- 2014-10-30 CN CN201410595865.7A patent/CN104457537B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851884A (en) * | 2010-03-23 | 2010-10-06 | 中国建筑股份有限公司 | Construction method for paving CRTS I-type plate-type ballastless track plate in severe cold area |
| CN101824784A (en) * | 2010-04-30 | 2010-09-08 | 成都普罗米新科技有限责任公司 | Track slab detection frame and detection method thereof |
| CN201865012U (en) * | 2010-10-25 | 2011-06-15 | 中建二局第三建筑工程有限公司 | Self-locking track slab anti-displacement device |
| CN202885760U (en) * | 2012-10-29 | 2013-04-17 | 苏州市中瑞模具有限公司 | Deformation detection tool |
Non-Patent Citations (3)
| Title |
|---|
| ②连接钢筋的张拉;邓昌大等;《高速铁路无咋轨道》;中国铁道出版社;20120131;第390页倒数第1-6行、第391页第1-2行、图9 * |
| 3.6 预应力钢筋张拉;中铁第五勘察设计院集团有限公司等;《高速铁路（客运专线）工程设计与施工技术论文集》;中国铁道出版社;20100531;第104页倒数第1-6行、第105页第1-5行、图2.138 * |
| 38.如何检测II型板的实际膨胀量;刘世安等;《客运专线铁路CRTS II型板式无砟轨道水泥乳化沥青砂浆疑难问题解答》;中国铁道出版社;20090228;第39页第5~26行 * |
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Inventor after: Suyalatu Inventor after: Sun Bole Inventor after: Li Dachang Inventor after: Yu Shanyi Inventor after: Xue Zemin Inventor after: Wang Haiyuan Inventor after: Fu Minguang Inventor after: Song Zongbo Inventor after: Li Jun Inventor after: Zhang Junbing Inventor after: Zheng Baocai Inventor before: Suyalatu Inventor before: Yu Shanyi Inventor before: Xue Zemin Inventor before: Wang Haiyuan Inventor before: Fu Minguang Inventor before: Song Zongbo Inventor before: Li Jun Inventor before: Zhang Junbing |
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Effective date of registration: 20170906 Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Co-patentee after: China Railway Third Engineering Co., Ltd. Patentee after: CHINA RAILWAY CORPORATION Co-patentee after: ZHENGXI RAILWAY PASSENGER DEDICATED LINE CO., LTD. Address before: 030001 Yingze street, Shanxi, No. 269, No. Co-patentee before: ZHENGXI RAILWAY PASSENGER DEDICATED LINE CO., LTD. Patentee before: China Railway Third Engineering Co., Ltd. |