CN104748732B - Measurement method for segmental precast bridge erection field - Google Patents
Measurement method for segmental precast bridge erection field Download PDFInfo
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- CN104748732B CN104748732B CN201510137733.4A CN201510137733A CN104748732B CN 104748732 B CN104748732 B CN 104748732B CN 201510137733 A CN201510137733 A CN 201510137733A CN 104748732 B CN104748732 B CN 104748732B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a measurement method for a segmental precast bridge erection field. The measurement method comprises the following steps: selecting an auxiliary datum point, arranging measurement points, checking and confirming control points, adjusting an elevation, adjusting a horizontal position, measuring first-beam segment measurement points and carrying out subsequent assembly. Completion of the measurement method for the segmental precast bridge erection field through the steps is capable of ensuring that deformation control after a bridge is formed and the final linearity and internal force of the bridge can also meet expected requirements.
Description
Technical field
The present invention relates to the technical field of precast segment bridge site operation, particularly relates to a kind of precast segment bridge frame
If on-site measurement method.
Background technology
During modern bridge construction, precast segment technology is got over numerous advantages such as its economic, efficient, environmental protection
Carry out more applications and popularization, however, in traditional work progress, due to a variety of causes bridge virtual condition and initially set
There is certain deviation in meter state, if this deviation is accumulative to take no action to afterwards to a certain extent be recognized and adjusted in time,
The structure of Cheng Qiaohou is likely difficult to ensure safely.Wherein, precast segment beam section in assembly due to be not accurately positioned cause spell
Dress back rest fragment position and design requirement position have big difference, and this is a critically important original for causing bridge structure safe to decline
Cause.
Tradition is utilized in being arranged after measuring point in first section beam section to the assembling method of precast segment beam section, other beam sections again with
Measuring point in head section beam sections is positioned for criterion, but this method must premised on being accurately positioned of first section beam section itself,
Importantly, during follow-up beam section carries out assembly, with the continuing to increase of bridge pier institute bearing load, temperature and prestressing force
The impact of many factors such as change, concrete shrinkage and creep, the physical location of measuring point is such as work progress in head section beam sections
Carrying out and be continually changing, when this change exceedes the scope that design is allowed, if still with the initial seat of measuring point in first section beam section
Being designated as criterion carries out beam section splicing, and the Deformation control target after bridge shaping possibly cannot be realized, final linear and interior of bridge
Power can not meet expected requirement.
The content of the invention
Present invention aims to the defect and deficiency of prior art, there is provided one kind installs simple, easy construction, Jing
Help efficient precast segment bridge erection on-site measurement method.
The technical scheme is that what is be achieved in that：
A kind of precast segment bridge erection on-site measurement method, comprises the following steps：
(1), auxiliary base point is selected：In bridge construction place, periphery selects a correct position as the auxiliary base of measurement
Point, the elevation that auxiliary base point is located meets measurement request, is difficult to be blocked, and remains in bridge construction process fixed
It is constant；
(2), measuring point is arranged：After Bridge Pier Construction finishes and first section beam section is set up by design requirement, in first section beam section top board
Upper arrangement measuring point；
(3), check and confirm control point：It is pre-buried when confirmation beam precast is checked on the top board of beam section to be assembled to be used for
Control the axial line control point of beam section plan-position to be assembled and the absolute altitude control point for controlling beam section elevation to be assembled；
(4), elevation is adjusted：The elevation of beam section to be assembled is adjusted according to the measuring point in step (2), until meeting design essence
Degree is required；
(5), horizontal level is adjusted：The position of the auxiliary base point according to set by step (1) is adjusting beam section to be assembled
Horizontal level, until meet design accuracy requirement, be then ready for the assembly of next beam section to be assembled；
(6), first section beam section measuring point measurement：Auxiliary base point position according to set by step (1) is measuring first section beam section
The position of measuring point, if the position of measuring point is not changed in or changes within the scope of design is allowed, still with first section beam section measuring point
Initial position be criterion, prepare the assembly of next beam section to be assembled, otherwise with the new position of first section beam section measuring point as criterion,
The assembly of next beam section to be assembled is carried out by design requirement；
(7) it is, follow-up assembled：Repeat step (2), (3), (4), (5), (6), continue to complete the assembly of follow-up beam section, until
All beam section assembly are completed.
Further, axial line control point is two.
Further, in the middle of axial line control point is located on the top board of beam section to be assembled.
Further, absolute altitude control point is the both sides for being symmetrically set in axial line control point.
Further, absolute altitude control point of the axial line control point per side is two.
Further, measuring point is at least three.
The beneficial effects of enforcing the present invention have：
The present invention confirms that control point, elevation are adjusted, horizontal level is adjusted by selecting auxiliary base point, arrangement measuring point, checking
Section, the measurement of first section beam section measuring point and follow-up assembled step can be protected come the measuring method for completing precast segment bridge erection scene
Demonstrate,prove the final linear and internal force of Deformation control and bridge after bridge shaping and also disclosure satisfy that expected requirement.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is precast segment bridge beam section assembly three-dimensional overall decomposing schematic representation；
Fig. 2 is first section beam section and measuring point three dimensional arrangement schematic diagram；
Fig. 3 is first section beam section and measuring point schematic top plan view；
Fig. 4 is beam section to be assembled and control point three dimensional arrangement schematic diagram；
Fig. 5 is beam section to be assembled and control point schematic top plan view；
Figure number and its explanation：
1st, bridge pier；2nd, first section beam section；3rd, beam section to be assembled；4th, auxiliary base point；5th, measuring point；6th, absolute altitude control point；7th, axle
Line traffic control point.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to figs. 1 to Fig. 5, a kind of precast segment bridge erection on-site measurement method that the utility model is provided, including with
Lower step：
(1), auxiliary base point 4 is selected：In bridge construction place, periphery selects a correct position as the auxiliary base of measurement
On schedule 4, the elevation that auxiliary base point 4 is located meets measurement request, is difficult to be blocked, and remains in bridge construction process
Immobilize；On schedule 4 positions are substantially, highly suitable to require selected auxiliary survey, are difficult to be blocked, and are afterwards positioned over total powerstation
The position, prepares to measure the position of beam section；By the first section beam section 2 of design requirement positioning, head sections after the construction of bridge pier 1 is finished
Beam section 2 is used as the benchmark beam section of follow-up all beam sections, and being accurately positioned for its own be particularly significant.Because beam section makes in precast plant
After the completion of the control point theoretical coordinate buried and actual coordinate have certain deviation, by dividing control of the middle arrow method to first section beam section equally
System point position is adjusted, and the position of first section beam section 2 is determined on this basis；
(2), measuring point 5 is arranged：After the construction of bridge pier 1 finishes and first section beam section 2 is set up by design requirement, in first section beam section 2
Measuring point 5 is arranged on top board, for treating assembled beam section 3 positioning is measured；
(3), check and confirm control point：Institute is pre- when checking that confirmation beam section 3 to be assembled is prefabricated on the top board of beam section to be assembled 3
The axial line control point 7 for controlling the plan-position of beam section to be assembled 3 for burying and the absolute altitude control for controlling the elevation of beam section to be assembled 3
System point 6；Equally, the control point actual coordinate and design theory coordinate that beam section to be assembled 3 is buried when prefabricated exists certain
Deviation, is adjusted by the control point position for dividing middle arrow method equally and treating assembled beam section 3, prepares assembled afterwards；
(4), elevation is adjusted：The elevation of beam section to be assembled 3 is adjusted according to the measuring point in step (2), specifically in head
Spirit level is placed on the measuring point that section beam section 2 is located, the control point for treating assembled beam section 3 measures, until meeting design accuracy
Require；
(5), horizontal level is adjusted：The position of the auxiliary base point 4 according to set by step (1) is adjusting beam section to be assembled
3 horizontal level, specifically utilizes the control point that the total powerstation placed on auxiliary base point 4 treats assembled beam section 3 to carry out
Measurement, until meeting design accuracy requirement, is then ready for the assembly of next beam section to be assembled 3；
(6), the first section measuring point 5 of beam section 2 is measured：The position of auxiliary base point 4 according to set by step (1) is measuring first section beam
The position of 2 measuring points 5 of section, if the position of measuring point 5 is not changed in or changes within the scope of design is allowed, still with first section beam section
The initial position of 2 measuring points 5 is criterion, prepares the assembly of next beam section to be assembled 3, otherwise saves the new position of the measuring point 5 of beam section 2 with first
Criterion is set to, by design requirement the assembly of next beam section to be assembled 3 is carried out；
(7) it is, follow-up assembled：Repeat step (2), (3), (4), (5), (6), continue to complete the assembly of follow-up beam section, until
All beam section assembly are completed.
Axial line control point 7 is two, and axial line control point 7 is middle on the top board of beam section to be assembled 3, so both can be square
Just plan-position is adjusted, is can ensure that again and divided that middle arrow method is easy to adjust and accuracy equally.
Absolute altitude control point 6 is the both sides for being symmetrically set in axial line control point 7, and absolute altitude control point 6 of the axial line control point 7 per side is
Two, so beneficial to the adjustment of elevation.
Measuring point 5 is at least three, so can ensure that the accuracy of first section beam section 2 measurement.
In sum, the present invention passes through to select auxiliary base point, arrangement measuring point, inspection to confirm control point, elevation regulation, water
Flat position adjustments, the head section beam section measuring point measurements and follow-up assembled step measurement side live to complete precast segment bridge erection
Method can ensure that the final linear and internal force of Deformation control and bridge after bridge shaping also disclosure satisfy that expected requirement.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (6)
1. a kind of precast segment bridge erection on-site measurement method, it is characterised in that comprise the following steps：
(1), auxiliary base point is selected：In bridge construction place, periphery selects a correct position as the auxiliary base point of measurement,
The elevation that auxiliary base point is located meets measurement request, is difficult to be blocked, and fixation is remained in bridge construction process not
Become；
(2), measuring point is arranged：After Bridge Pier Construction finishes and first section beam section is set up by design requirement, the cloth on first section beam section top board
Put measuring point；
(3), check and confirm control point：Check pre-buried for controlling when confirming beam precast on the top board of beam section to be assembled
The axial line control point of beam section plan-position to be assembled and the absolute altitude control point for controlling beam section elevation to be assembled；
(4), elevation is adjusted：The elevation of beam section to be assembled is adjusted according to the measuring point in step (2), until meet design accuracy will
Ask；
(5), horizontal level is adjusted：The position of the auxiliary base point according to set by step (1) is adjusting the water of beam section to be assembled
Prosposition is put, until meeting design accuracy requirement, is then ready for the assembly of next beam section to be assembled；
(6), first section beam section measuring point measurement：Auxiliary base point position according to set by step (1) is measuring first section beam section measuring point
Position, if the position of measuring point is not changed in or changes within the scope of design is allowed, still with first section beam section measuring point just
Beginning, position was criterion, prepared the assembly of next beam section to be assembled, otherwise with the new position of first section beam section measuring point as criterion, by setting
Meter requires the assembly for carrying out next beam section to be assembled；
(7) it is, follow-up assembled：Repeat step (2), (3), (4), (5), (6), continue to complete the assembly of follow-up beam section, until all
Beam section assembly is completed.
2. precast segment bridge erection on-site measurement method according to claim 1, it is characterised in that axial line control point is
Two.
3. precast segment bridge erection on-site measurement method according to claim 2, it is characterised in that axial line control point position
In the middle of on the top board of beam section to be assembled.
4. precast segment bridge erection on-site measurement method according to claim 3, it is characterised in that absolute altitude control point is
It is symmetrically set in the both sides of axial line control point.
5. precast segment bridge erection on-site measurement method according to claim 4, it is characterised in that axial line control point is every
The absolute altitude control point of side is two.
6. precast segment bridge erection on-site measurement method according to claim 1, it is characterised in that measuring point is at least three
It is individual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137733.4A CN104748732B (en) | 2015-03-26 | 2015-03-26 | Measurement method for segmental precast bridge erection field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510137733.4A CN104748732B (en) | 2015-03-26 | 2015-03-26 | Measurement method for segmental precast bridge erection field |
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| Publication Number | Publication Date |
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| CN104748732A CN104748732A (en) | 2015-07-01 |
| CN104748732B true CN104748732B (en) | 2017-05-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108345318A (en) * | 2018-02-07 | 2018-07-31 | 中交公局第二工程有限公司 | A kind of beam sections free cantilever erection pier top block installation measurement method |
| CN108360386B (en) * | 2018-03-29 | 2019-07-05 | 石家庄铁道大学 | A kind of accurate erection construction method of whole opening prefabricated simple supported box beam bridge |
| CN108827253B (en) * | 2018-03-29 | 2020-11-03 | 上海宝冶集团有限公司 | Method for installing, positioning and measuring pipeline bracket of snowmobile ski track |
| CN108914775B (en) * | 2018-06-26 | 2020-01-31 | 上海贝英吉工程咨询有限公司 | method for positioning segmental beam |
| CN108625296B (en) * | 2018-06-26 | 2020-01-07 | 上海贝英吉工程咨询有限公司 | Installation linear control method for segmental precast bridge |
| CN108762059A (en) * | 2018-08-12 | 2018-11-06 | 广州瀚阳工程咨询有限公司 | A kind of automatic control system applied to short-line prefabrication bridge subsection |
| CN110144828A (en) * | 2019-06-03 | 2019-08-20 | 中建钢构有限公司 | The linear control method of the location structure of steel box girder assembling, support construction and bridge |
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| CN101476292A (en) * | 2009-01-09 | 2009-07-08 | 广州市市政集团有限公司 | Method and equipment for mounting precast beam |
| CN101684638A (en) * | 2008-09-23 | 2010-03-31 | 中交第三航务工程局有限公司 | Assembly method of section box girder |
| CN101713169A (en) * | 2008-10-06 | 2010-05-26 | 中交第三航务工程局有限公司 | Method for manufacturing segmental box girder |
| CN101985826A (en) * | 2010-09-19 | 2011-03-16 | 湖南路桥建设集团公司 | Construction method for high-altitude section prefabricating, beam moving, beam storing and assembling of large concrete box beam |
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Patent Citations (4)
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|---|---|---|---|---|
| CN101684638A (en) * | 2008-09-23 | 2010-03-31 | 中交第三航务工程局有限公司 | Assembly method of section box girder |
| CN101713169A (en) * | 2008-10-06 | 2010-05-26 | 中交第三航务工程局有限公司 | Method for manufacturing segmental box girder |
| CN101476292A (en) * | 2009-01-09 | 2009-07-08 | 广州市市政集团有限公司 | Method and equipment for mounting precast beam |
| CN101985826A (en) * | 2010-09-19 | 2011-03-16 | 湖南路桥建设集团公司 | Construction method for high-altitude section prefabricating, beam moving, beam storing and assembling of large concrete box beam |
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| CN104748732A (en) | 2015-07-01 |
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Address after: 510220 self compiled 239A room, 2 floor, seven tower, Hongtai wisdom Valley, 23 Tianhe District Si Cheng Road, Tianhe District, Guangzhou. Patentee after: Hanyang International Engineering Consulting Co.,Ltd. Address before: 510000, room 7, floor 233, 1-2 Tianfu Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangzhou Hanyang Engineering Consulting Co.,Ltd. |
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Effective date of registration: 20220622 Address after: Room 208a, floor 2, building 7, Hongtai wisdom Valley, No. 23, Sicheng Road, Tianhe District, Guangzhou, Guangdong 510220 Patentee after: GUANGDONG HANYANG TRACK INFORMATION TECHNOLOGY Co.,Ltd. Address before: 510220 Guangzhou Tianhe District, Guangdong Province, 23 Sicheng Road, Hongtai Wisdom Valley Building 2 Floor 239A Patentee before: Hanyang International Engineering Consulting Co.,Ltd. |
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