CN103388308A - Secondary temporary pull rod structure protective construction method in large-sized symmetrical oblique pier construction - Google Patents
Secondary temporary pull rod structure protective construction method in large-sized symmetrical oblique pier construction Download PDFInfo
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- CN103388308A CN103388308A CN2013103388955A CN201310338895A CN103388308A CN 103388308 A CN103388308 A CN 103388308A CN 2013103388955 A CN2013103388955 A CN 2013103388955A CN 201310338895 A CN201310338895 A CN 201310338895A CN 103388308 A CN103388308 A CN 103388308A
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Abstract
The invention discloses a secondary temporary pull rod structure protective construction method in large-sized symmetrical oblique pier construction. The method is characterized by comprising the following construction steps of arch seat construction; erecting an oblique pier template support; symmetrically pouring the oblique pier sections I of the large-sized symmetrical oblique pier; setting a first temporary pull rod between two ends of the upper parts of the symmetrical oblique pier sections I; symmetrically pouring the oblique pier sections II of the large-sized symmetrical oblique pier; setting a second temporary pull rod between two ends of the upper parts of the symmetrical oblique pier sections II; finishing main beam structure construction above the large-sized symmetrical oblique pier; demolishing the first and second temporary pull rods; demolishing the oblique pier template support. According to the technical scheme of the invention, the structural stability of the symmetrical oblique piers can be enhanced, the horizontal component can be eliminated, the root negative hogging moment can be reduced and the structure line font can be kept.
Description
Technical field
The present invention relates to a kind of job practices, particularly a kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices.
Background technology
In bridge construction process, to large tilting symmetrical inclined pier structure, all take single falsework method to construct at present, only depend on support self intensity and rigidity to offset the horizontal component of incline structure, the linear and stability of control structure.Its shortcoming is that support self structure rigidity is wanted enough greatly, and the support cost is high; Next is that support need bear entire infrastructure load, and the distortion of support is larger, and it is unfavorable that structural linetype is controlled.
Summary of the invention
Goal of the invention of the present invention is:, for the problem of above-mentioned existence, provide a kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices, can strengthen the Stability Analysis of Structures of symmetrical inclined pier, elimination of level component.
The technical solution used in the present invention is such:
A kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices is characterized in that comprising following construction sequence:
One, arch seat construction;
Two, set up oblique pier falsework;
Three, symmetry is built the oblique pier sections one of large-scale symmetrical inclined pier;
Four, between oblique pier sections one both upper ends thereof of symmetry, temporary rod for the first time is set;
Five, symmetry is built the oblique pier sections two of large-scale symmetrical inclined pier;
Six, between oblique pier sections two both upper ends thereof of symmetry, temporary rod for the second time is set;
Seven, complete the main beam structure construction above large-scale symmetrical inclined pier;
Eight, remove temporary rod and temporary rod for the first time for the second time;
Nine, remove the pier falsework.
The technical program can strengthen the Stability Analysis of Structures of large-scale symmetrical inclined pier, and elimination of level component reduces the root hogging moment, guarantees structural linetype.
As preferably, described second step, before setting up oblique pier falsework, first carry out 110% load precompressed test to it, obtains deformation data, then calculates and arrange the 3rd step and the 5th construction camber that goes on foot.Due to the impact of the distortion of considering oblique pier falsework on large-scale symmetrical inclined pier, just first oblique pier falsework is arranged a construction camber, in work progress, large-scale symmetrical inclined pier just can meet linear requirement after being out of shape under Action of Gravity Field like this.
As preferably, temporary rod for the first time and the 6th step temporary rod for the second time used used in described the 4th step are steel strand.
As further preferred enforcement the to above-mentioned optimal way, in described the 4th step and the 6th step, at tiltedly pier sections one and tiltedly the upper side pre-embedded steel slab of pier sections two, the square box of one of welding and lateral vertical on pre-embedded steel slab then, the two ends of steel strand are banded on this square box.A kind of steel strand mounting or dismounting mode like this, very convenient.
Description of drawings
Fig. 1 is the working drawing of the designed method of the present invention.
Fig. 2 costs support to carry out the structural representation of main beam structure construction on large-scale symmetrical inclined pier.
Mark in figure: 1 is abut, and 2 is oblique pier falsework, and 3 is oblique pier sections one, 4 to be oblique pier sections two, 5 be temporary rod for the first time, and 6 are temporary rod for the second time, and 7 is main beam structure.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1: as shown in Figure 1, a kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices comprises following construction sequence:
One, abut 1 construction;
Two, set up oblique pier falsework 2;
Three, symmetry is built the oblique pier sections 1 of large-scale symmetrical inclined pier;
Four, between oblique pier sections one 3 both upper ends thereof of symmetry, temporary rod 5 for the first time is set;
Five, symmetry is built the oblique pier sections 24 of large-scale symmetrical inclined pier;
Six, between oblique pier sections 24 both upper ends thereof of symmetry, temporary rod 6 for the second time is set;
Seven, complete main beam structure 7 constructions above large-scale symmetrical inclined pier, as shown in Figure 2;
Eight, remove temporary rod 5 and temporary rod 6 for the first time for the second time;
Nine, remove pier falsework 2.
Embodiment 2: as shown in Figure 1, a kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices comprises following construction sequence:
One, abut 1 construction;
Two, set up oblique pier falsework 2; Before setting up oblique pier falsework 2, first it is carried out 110% load precompressed test, obtain deformation data, then calculate and arrange the construction camber in the 3rd step and the 5th step;
Three, symmetry is built the oblique pier sections 1 of large-scale symmetrical inclined pier, builds 1/2 place to whole height;
Four, when concrete strength reaches more than 95% and be not less than 7 days the length of time, stretch-draw temporary rod 5 for the first time between oblique pier sections one 3 both upper ends thereof of symmetry;
Five, symmetry is built the oblique pier sections 24 of large-scale symmetrical inclined pier;
Six, when concrete strength reaches more than 95% and be not less than 7 days the length of time, stretch-draw temporary rod 6 for the second time between oblique pier sections one 3 both upper ends thereof of symmetry;
Seven, complete the construction of main beam structure 7 above the symmetrical inclined pier, as shown in Figure 2;
Eight, remove temporary rod 5 and temporary rod 6 for the first time for the second time;
Nine, remove pier falsework 2.
Temporary rod for the first time 5 and the 6th step temporary rod for the second time 6 used used in described the 4th step are steel strand.In described the 4th step and the 6th step,, at tiltedly pier sections 1 and tiltedly the upper side pre-embedded steel slab of pier sections 24, then weld a square box with lateral vertical on pre-embedded steel slab, the two ends of steel strand are banded on this square box.
The foregoing is only preferred embodiment of the present invention,, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. one kind large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices is characterized in that comprising following construction sequence:
One, abut (1) construction;
Two, set up oblique pier falsework (2);
Three, symmetry is built the oblique pier sections one (3) of large-scale symmetrical inclined pier;
Four, between oblique pier sections one (3) both upper ends thereof of symmetry, temporary rod (5) for the first time is set;
Five, symmetry is built the oblique pier sections two (4) of large-scale symmetrical inclined pier;
Six, between oblique pier sections two (4) both upper ends thereof of symmetry, temporary rod (6) for the second time is set;
Seven, complete main beam structure (7) construction above large-scale symmetrical inclined pier;
Eight, remove temporary rod (5) and temporary rod (6) for the first time for the second time;
Nine, remove pier falsework (2).
2. a kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices according to claim 1; it is characterized in that: described second step; setting up oblique pier falsework (2) before; first it is carried out 110% load precompressed test; obtain deformation data, then calculate and arrange the construction camber in the 3rd step and the 5th step.
3. a kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices according to claim 1 and 2 is characterized in that: in described the 4th step, to go on foot temporary rod for the second time (6) used be steel strand to temporary rod for the first time (5) and the 6th used.
4. a kind of large-scale symmetrical inclined pier construction secondary temporary rod structural defence job practices according to claim 3; it is characterized in that: in described the 4th step and the 6th step; at tiltedly pier sections one (3) and tiltedly the upper side pre-embedded steel slab of pier sections two (4); then square box with lateral vertical of welding on pre-embedded steel slab, the two ends of steel strand are banded on this square box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103388955A CN103388308A (en) | 2013-08-06 | 2013-08-06 | Secondary temporary pull rod structure protective construction method in large-sized symmetrical oblique pier construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103388955A CN103388308A (en) | 2013-08-06 | 2013-08-06 | Secondary temporary pull rod structure protective construction method in large-sized symmetrical oblique pier construction |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339033A (en) * | 1997-06-05 | 1998-12-22 | Sumitomo Constr Co Ltd | Concrete multistory building construction device and construction method for concrete oblique post |
| CN102888815A (en) * | 2012-10-16 | 2013-01-23 | 上海城建市政工程（集团）有限公司 | Pouring construction method of wide-angle V-shaped pier and 0# box girder |
| CN202954299U (en) * | 2012-10-16 | 2013-05-29 | 上海城建市政工程（集团）有限公司 | Template support structure for large-angle V-shaped pier and No.0 block of continuous rigid framework bridge |
-
2013
- 2013-08-06 CN CN2013103388955A patent/CN103388308A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339033A (en) * | 1997-06-05 | 1998-12-22 | Sumitomo Constr Co Ltd | Concrete multistory building construction device and construction method for concrete oblique post |
| CN102888815A (en) * | 2012-10-16 | 2013-01-23 | 上海城建市政工程（集团）有限公司 | Pouring construction method of wide-angle V-shaped pier and 0# box girder |
| CN202954299U (en) * | 2012-10-16 | 2013-05-29 | 上海城建市政工程（集团）有限公司 | Template support structure for large-angle V-shaped pier and No.0 block of continuous rigid framework bridge |
Non-Patent Citations (1)
| Title |
|---|
| 朱荣: "预应力混凝土V型墩连续刚构桥分段施工的状态估计及工程控制", 《合肥工业大学》, 1 April 2010 (2010-04-01), pages 38 - 42 * |
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Application publication date: 20131113 |