CN205171381U - Prefabricated assembly bridge bent cap positioner - Google Patents
Prefabricated assembly bridge bent cap positioner Download PDFInfo
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- CN205171381U CN205171381U CN201520925803.8U CN201520925803U CN205171381U CN 205171381 U CN205171381 U CN 205171381U CN 201520925803 U CN201520925803 U CN 201520925803U CN 205171381 U CN205171381 U CN 205171381U
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Abstract
The utility model discloses a prefabricated assembly bridge bent cap positioner, belong to prefabricated assembly bridge bent cap construction field, positioner wherein mainly is by the truss, on fix a position the grid, under fix a position the grid, go up constitutions such as positioning bolt and lower positioning bolt, and ensure that the mounted position of every stand top many pre -buried anchor reinforcing bars is accurate and can not receive the vibration effect that the stand pour and obtain the accurate positioning through positioner, the corresponding prefabricated assembly bridge bent cap construction method of reunion makes that predetermined bent cap mud jacking pore corresponds with every anchor reinforcing bar homoenergetic accuracy on the bent cap, reasonable force bearing, structure safety, thereby realize the quick installation of prefabricated assembly bridge bent cap, this kind of prefabricated assembly bridge bent cap positioner has the simple structure, and convenient for operation, the economical rationality, high assembly precision, advantages such as energy saving and emission reduction, and can embody the batch production, the standardization, standardized construction, the economical and social benefits are obvious.
Description
Technical field
The utility model relates to a kind of prefabrication and assembly construction bridge coping construction field, specifically refers to prefabrication and assembly construction bridge coping positioner.
Background technology
The prefabricated assembled construction of bridge engineering is that the current problem, particularly bridge substructure studied is more in the urgent need to there being large breakthrough.The construction of existing highway bridge column and bent cap is still main based on artificial assembling reinforcement, poured in place concrete, and this Construction Mode exists following defect: need set up a large amount of support and template, security risk is large; Field operation needs a large amount of labour; Efficiency of construction is low, long construction period; Large on existing road traffic impact, social influence is large; The environmental factor interference such as dust, mud, noise, light are large, and civilized construction is difficult to meet public's requirement; Extensive Construction Mode causes the overall energy consumption of industry high, and waste is serious.Therefore, prefabricated, the on-the-spot quick assembling of batch production is the effective measures overcome the above problems, and this just requires the precision that prefabricated units and site assembly reach higher, could smooth construction and guarantee workmanship.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defect of prior art and provides a kind of simple structure, easy to operate, economical rationality, prefabrication and assembly construction bridge coping positioner that assembly precision is high.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of prefabrication and assembly construction bridge coping positioner, comprise pile foundation, be cast in the multiple column in pile foundation and build shaping model of the column for each column, many pre-buried anchor bars are equipped with in described each column, the top of every root anchor bar is all stretched out column top and is exposed, described each column top is equipped with supporting steel, model of the column top on this supporting steel and each column is connected and fixed, supporting steel is provided with the truss crossed over multiple column and install, just upper location grid and lower location grid are equipped with to each stud in this truss, described every root anchor bar top is all stretched in truss, and connects location with the upper location grid in described truss and lower location grid.
Described truss is the rectangular-shaped frame construction be welded by steel i iron and channel-section steel, and described upper location grid is fixedly mounted on just to the truss top of each stud, and lower location grid is fixedly mounted on just to the truss bottom of each stud.
Be provided with the upper positioning bolt that many connect the many anchor bars in location respectively in described upper location grid, in lower location grid, be provided with the lower positioning bolt that many connect the many anchor bars in location respectively.
Described model of the column top is provided with the upright column bracket being connected and fixed supporting steel.
Many described anchor bars are that every root anchor bar stretches out the top of exposing at column top and is equipped with anchor bolt and pad with column center for the center of circle and circumference uniform distribution is embedded in column.
Compared with prior art, a kind of positioner being applied to prefabrication and assembly construction bridge coping of the utility model major design, this positioner is mainly by truss, upper location grid, lower location grid, the formations such as upper positioning bolt and lower positioning bolt, and the installation site of guaranteeing the many anchor bars that each column top is pre-buried by the positioner vibration effect of accurately and not building by column and accurately being located, all energy is accurately corresponding to make bent cap mud jacking duct default on bent cap and every root anchor bar in conjunction with corresponding prefabrication and assembly construction bridge coping construction method again, reasonable stress, structural safety, thus realize the Fast Installation of prefabrication and assembly construction bridge coping, this prefabrication and assembly construction bridge coping positioner has simple structure, easy to operate, economical rationality, assembly precision is high, the advantages such as energy-saving and emission-reduction, and can batch production be embodied, standardization, standardized construction, economic benefit and social benefit remarkable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation that in Fig. 1, single column is analysed and observe.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is upper positioning bolt and the enlarged drawing be connected between anchor bar.
Fig. 5 is the pillar construction schematic diagram being provided with mud jacking template.
Fig. 6 is the anchored force rated figure of anchor bar.
Fig. 7 is the schematic diagram that pile foundation, column and bent cap form rock-steady structure.
Fig. 8 is the left view of Fig. 7.
Detailed description of the invention
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 8, 1. pile foundation, 2. column, 21. anchor bars, 22. rubber cushion blocks, 23. anchor bolts, 24. pads, 3. truss, 31. supporting steels, 32. channel-section steel bolts, 33. truss bolts, 4. model of the column, 41. upright column brackets, 5. go up location grid, set bolt on 51., positioning bolt on 52., 6. descend location grid, 61. times set bolts, 62. times positioning bolts, 7. bent cap, 71. bent cap mud jacking ducts, 72. anchorage mortars, 73. pinner concrete, 8. mud jacking template, 81. template bolts, 82. anchor ears, 83. anchor ear bolts, 84. sealing rubber strips, 85. mud jacking mouths.
Prefabrication and assembly construction bridge coping positioner, as shown in Figure 1 and Figure 2, relates to a kind of prefabrication and assembly construction bridge coping construction field; Wherein, prefabrication and assembly construction bridge coping positioner is mainly made up of truss 3, upper location grid 5, lower location grid 6, upper positioning bolt 52 and lower positioning bolt 62 etc., prefabrication and assembly construction bridge coping positioner is arranged on multiple column 2 top, and for the Fast Installation of auxiliary prefabrication and assembly construction bridge coping.
First, need to build pile foundation 1 according to the construction location of setting, pile foundation is the basis of bridge pier, first holed by drilling machine circular, place in pile foundation bore edges many along pile foundation center radiation be circular, namely with pile foundation center for the pile foundation reinforcing bar of circumference uniform distribution is made and concrete perfusion in the center of circle, the pile foundation reinforcing bar of certain length need be reserved for column bar connecting in pile foundation 1 top.
Described each pile foundation 1 all builds column 2 connect, this column is cylindrical, its external diameter is less than pile foundation 1 external diameter, place in column 2 circular edge many along column center radiation be circular, namely with column center for the column reinforcing bar of circumference uniform distribution is made in the center of circle, many root posts reinforcing bar and pile foundation 1 top reserved many piles base reinforcing bar needs quantity, position is identical and be connected, pile foundation 1 end face installs model of the column 4, then concreting can form circular abutment 2, simultaneously, pre-buried some again in column reinforcing bar inward flange, specification be circular many anchor bars 21 along column center radiation, namely many anchor bars are for making circumference uniform distribution in the center of circle with column center, every root anchor bar 21 is HRB500 reinforcing bar, diameter is 32 ~ 36mm, the length be embedded in column 2 is 120 ~ 150cm, every root anchor bar 21 top all needs to stretch out column 2 top and exposes, the height of its protruded length and bent cap 7 matches, many anchor bar 21 tops also need to arrange anchor bolt 23 and pad 24, can be used for facilitating anchor bar 21 top to connect through behind the bent cap mud jacking duct 71 that prefabrication and assembly construction bridge coping is preset, pad 24 diameter on every root anchor bar 21 top is all greater than the internal diameter in bent cap mud jacking duct 71, and the diameter in bent cap mud jacking duct 71 is 6 ~ 7cm, just can fastening bent cap 7 after the nut of anchor bolt 23.
Described model of the column 4 is steel drum shape, its internal diameter is identical with column external diameter, model of the column 4 top is provided with upright column bracket 41, can be used for the installation of supporting steel 31, normally supporting steel is fastened on upright column bracket 41 by channel-section steel bolt 32, then is laid for truss 3 by the supporting of supporting steel 31.
Described truss 3 is the rectangular-shaped frame constructions be welded by steel i iron and channel-section steel, first be fixed on supporting steel 31 by truss bolt 33, thus forming the mounting means crossing over multiple column 2, it is higher that truss 3 size makes precision, has larger rigidity not yielding; Meanwhile, be just equipped with upper location grid 5 and lower location grid 6 to each column 2 position in truss 3, on this, location grid 5 is fastened on truss 3 top by upper set bolt 51, and this lower location grid 6 is fastened on truss 3 bottom by lower set bolt 61.
Described upper location grid 5, many are arranged respectively as Fig. 3 in lower location grid 6, upper positioning bolt 52 shown in Fig. 4, lower positioning bolt 62, on, the quantity of lower positioning bolt, position is all equal with the anchor bar 21 being exposed at each column 2 top outward, and can be used for the installation site regulating and fix every root anchor bar 21, what be not subject to column cement concrete builds vibration effect, the position of accurate positioning and anchoring reinforcing bar 21, when hanging in prefabrication and assembly construction bridge coping to make the later stage, the position of every root anchor bar 21 can be made all consistent with the positional precision in bent cap mud jacking duct 71 reserved on bent cap 7.
According to form of structure and the mounting means of above-mentioned prefabrication and assembly construction bridge coping positioner, the utility model describes the prefabrication and assembly construction bridge coping construction method of combination corresponding to it more one by one in detail:
Step one, making, assembling prefabrication and assembly construction bridge coping positioner
1. according to the design drawing design prefabrication and assembly construction bridge coping positioning device structure drawing of pile foundation 1, column 2 and bent cap 7;
2. make prefabrication and assembly construction bridge coping positioner parts, comprise truss 3, upper location grid 5, lower location grid 6, and quality examination is qualified;
3. prefabrication and assembly construction bridge coping positioner parts are transported to job site assembling, upper location grid 5, lower location grid 6, upper positioning bolt 52, the installation site of lower positioning bolt 62 on truss 3 are accurate, after forming complete prefabrication and assembly construction bridge coping positioner, need test set packing quality qualified;
Step 2, anchor bar are located and are built column concrete
1. build pile foundation 1 shaping, cleaning pile foundation top concrete, arrange the outer pile foundation reinforcing bar being exposed at pile foundation 1 top, stake bit trial is qualified;
The column reinforcing bar of 2. building for column 2 and pile foundation bar connecting, pre-buried anchor bar 21, pile foundation 1 is pushed up and is installed model of the column 4;
3. install upright column bracket 41 at model of the column 4 top and hang in supporting steel 31, this supporting steel is fixed on upright column bracket 41 by channel-section steel bolt 32;
4. hang in whole prefabrication and assembly construction bridge coping positioner, be placed on supporting steel 31, and by truss bolt 33 fixation;
5. regulate every root anchor bar 21 position on fixing each column 2 with the upper positioning bolt 52 of location grid 5, the lower positioning bolt 62 of lower location grid 6, require that position is accurate, error is within prescribed limit;
6. use pump truck pump cement concreting column 2, and carry out concrete curing in time;
Step 3, remove whole prefabrication and assembly construction bridge coping positioner
1. concrete curing is after 1 day, unclamps truss bolt 33, hangs out whole prefabrication and assembly construction bridge coping positioner, properly stacks in order to using next time;
2. unclamping channel-section steel bolt 32, hang out supporting steel 31, properly stacking in order to using next time;
3. removing model of the column 4, hang out model of the column 4, properly stacking in order to using next time;
4. concrete is total to health one week, treats that concrete strength reaches more than 70% of design strength and carries out lower step construction;
Step 4, hang in prefabricated bent cap
1. dabbing many root posts 2 end face concrete, and clean up;
2. every root post end face places two pieces of rubber cushion blocks 22 along bridge lateral, the placement location of these two pieces of rubber cushion blocks is multiple column 2 line of centres symmetry and the inner side of close anchor bar 21, every block rubber cushion blocks 22 plane is 6 ~ 10cm, thickness 4 ~ 5cm, every block rubber cushion blocks 22 is all firm by epoxy bond with column 2 end face;
3. the bent cap 7 through being up to the standards is lifted by crane, this bent cap is bar shaped reinforced concrete structure, shaping by prefabrication, can cross over and be arranged on multiple column 2, vertical bent cap mud jacking duct 71 need be reserved with anchor bar 21 corresponding position on multiple column, the i.e. position of bent cap mud jacking duct and anchor bar 21, quantity is all corresponding, the numerical value that the internal diameter in each bent cap mud jacking duct 71 is all certain greatly than the diameter of every root anchor bar 21, each bent cap mud jacking duct 71 is aimed at corresponding every root anchor bar 21 slowly to put down, be placed on every root anchor bar 21 on two pieces of rubber cushion blocks 22 all penetrate in bent cap mud jacking duct 71 until bent cap 7 is safe, and till the top of every root anchor bar 21 is all exposed,
Step 5, mud jacking
1. between column 2 top and bent cap 7 bottom surface, mud jacking template 8 is installed, this mud jacking template is connected by template bolt 81 as shown in Figure 5 and forms steel drum shape, its internal diameter is identical with column 2 external diameter, outside mud jacking template 8, anchor ear 82 1 is respectively established in upper and lower part, and is regulated by anchor ear bolt 83 and hold tightly in column 2 top; Simultaneously, the sealing rubber strip 84 of tubular is all set inside mud jacking template 8 end face and contact position, bent cap 7 bottom surface and cylindrical shape, the sectional elevation of this shaped seals rubber strip is in " 7 " font, a space sealed is formed between making bottom column 2 top and bent cap 7, this space only communicates with bent cap mud jacking duct 71 reserved on bent cap 7, mud jacking template 8 also needs reserved mud jacking mouth 85;
2. connect mud jacking mouth 85 with mudjack and be pressed into pressure-air in mud jacking template 8, check and whether leak gas around mud jacking template 8, check whether bent cap mud jacking duct 71 ventilates smoothly simultaneously, the position of mud jacking template 8 and sealing rubber strip 84 need be readjusted by the anchor ear 82 outside mud jacking template 8 if any gas leakage, pressure-air 3 ~ 5 minutes duration of press-in, to remove the foreign material in column 2 top and bent cap mud jacking duct 71;
3. mixing bar connecting sleeve grouting material and anchorage mortar 72, and pour mudjack slurry storing tank into, denseness meets standard;
4. mudjack force feed anchorage mortar 72 is started, mud jacking pressure 0.2 ~ 0.5MPa, mud jacking pressure is ascending, and require that 28 days intensity is not less than 85Mpa, until slurries are emerged from top, bent cap mud jacking duct 71, till space between bent cap mud jacking duct 71 and anchor bar 21 is full of anchorage mortar, play consolidation every root anchor bar 21 and the concrete effect of bent cap;
5. mud jacking removes mudjack after terminating, and erases the anchorage mortar 72 that anchor bar 21 top is unnecessary, and the screw thread on anchor bar 21 top also needs to clean out, then completes anchorage mortar 72 mud jacking of other many root post 2 and bent cap 7 successively;
6. after anchorage mortar 72 solidifies one day, remove mud jacking template 8, health one week, treat that intensity reaches more than 70% of design strength and can carry out lower step construction;
Step 6, screw anchor bar bolt
1. flatten anchor bar 21 and bent cap mud jacking duct 71, surface, bent cap 7 contact position solidify anchorage mortar 72 and bent cap concrete;
2. anchor bolt 23 and pad 24 are loaded anchor bar top and screw, what use dynamometer control anchor bolt 23 screws moment of torsion;
Step 7, build pinner concrete
1. dabbing bent cap 7 end face concrete, and clean up;
2. vertical pinner concrete blinding is propped up on bent cap 7 top;
3. use pump truck pumping of concrete to build pinner concrete seven 3, remove pinner concrete blinding until pinner concrete setting after one day, health one week, pinner concrete seven 3 intensity reaches more than 70% of design strength and carries out lower step construction;
Step 8, grouting result quality examination
Use the grouting result of supersonic reflectoscope or detections of radar anchorage mortar 72, require that anchorage mortar mud jacking is closely knit without cavity.
In above-mentioned construction method, anchor bar 21 is bondd by anchorage mortar 72, and anchor bar 21 is under the effect of anchor bolt 23 tensile force, and bonding shear stress is directly proportional to the relative displacement between the hole wall of bent cap mud jacking duct 71, and carries out publicity calculating shown in composition graphs 6:
Formula one
In formula
---
the adhesion stress on anchor bar 21 surface, the i.e. shear stress of anchorage mortar 72 under section anchorage mortar 72 cementation,
;
---
relative displacement between section anchor bar 21 and bent cap mud jacking duct 71 hole wall,
;
---
, wherein
for the shearing rigidity of anchorage mortar 72,
;
for the concrete shearing rigidity of bent cap,
;
---
the stretching strain of section anchor bar 21;
---anchor bar 21 diameter,
;
---the gap length between anchor bar 21 and bent cap mud jacking duct 71, is generally
,
;
---anchor bar 21 anchoring depth,
;
Formula two
In formula
---
the adhesion stress on anchor bar 21 surface, the i.e. shear stress of anchorage mortar 72 under section anchorage mortar 72 cementation,
;
---anchor bar 21 anchoring depth,
;
---anchor bar 21 diameter,
;
Formula three
In formula
---
the stretching strain of section anchor bar 21;
---
the pulling force of section anchor bar 21,
;
---anchor bar 21 diameter,
;
---the modulus of elasticity of anchor bar 21,
.
Formula four
Simultaneous formula one ~ formula three solves,
In formula
---
the adhesion stress on anchor bar 21 surface, the i.e. shear stress of anchorage mortar 72 under section anchorage mortar 72 cementation,
;
---integral constant, on anchor bar 21, anchorage shear stress is distributed as negative exponential function;
---
, wherein
for the shearing rigidity of anchorage mortar 72,
;
for the concrete shearing rigidity of bent cap,
;
---the modulus of elasticity of anchor bar 21,
;
---anchor bar 21 diameter,
;
In formula four,
When
,
, anchorage mortar 72 allow adhesion strength and anchorage mortar 72 allow shear strength,
;
When
,
,
for the shearing rigidity of anchorage mortar 72,
;
Generally
~
, when
time,
, namely when the length of anchor bar 21 and the ratio of diameter
time, anchorage mortar 72 adhesion stress is very little, negligible;
Formula five
By formula two and formula four, try to achieve anchor bolt 23 place namely
the anchored force of the anchor bar 21 at place is maximum, for
in formula
---anchor bolt 23 place is namely
the anchored force of the anchor bar 21 at place,
;
---
the adhesion stress on anchor bar 21 surface, the i.e. shear stress of anchorage mortar 72 under section anchorage mortar 72 cementation,
;
---
, wherein
for the shearing rigidity of anchorage mortar 72,
;
for the concrete shearing rigidity of bent cap,
;
---the modulus of elasticity of anchor bar 21,
;
---anchor bar 21 diameter,
;
---anchor bar 21 anchoring depth,
;
---anchor bar 21 allow pulling force,
;
---integral constant, on anchor bar 21, anchorage shear stress is distributed as negative exponential function;
In formula five, when
~
, when
time,
In formula
---anchor bolt 23 place is namely
the anchored force of the anchor bar 21 at place,
;
---anchor bar 21 allow pulling force,
;
---
, wherein
for the shearing rigidity of anchorage mortar 72,
;
for the concrete shearing rigidity of bent cap,
;
---the modulus of elasticity of anchor bar 21,
;
---anchor bar 21 diameter,
;
Formula six
Anchor bolt 23 moment of torsion of fastening anchor bar 21 is
In formula,
---tighten up the moment of torsion of anchor bolt 23,
;
---anchor bolt 23 place is namely
the anchored force of the anchor bar 21 at place,
;
---
, wherein
for the shearing rigidity of anchorage mortar 72,
;
for the concrete shearing rigidity of bent cap,
;
---the modulus of elasticity of anchor bar 21,
;
---anchor bar 21 diameter,
;
---the allowable torque of anchor bolt 23,
.
The rock-steady structure of pile foundation 1 as shown in Figure 7, Figure 8, column 2 and bent cap 7 just can be formed by above-mentioned construction method.
The utility model also by a concrete Application Example table and composition graphs 1 ~ Fig. 8 be described further.
The Application Example table of prefabrication and assembly construction bridge coping positioner
Embodiment described in the utility model is only not used in restriction scope of the present utility model for illustration of the utility model.Should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model instruction in addition.
Claims (5)
1. a prefabrication and assembly construction bridge coping positioner, comprise pile foundation (1), be cast in the multiple columns (2) in pile foundation (1) and build shaping model of the column (4) for each column (2), many pre-buried anchor bars (21) are equipped with in described each column (2), the top of every root anchor bar (21) is all stretched out column top and is exposed, it is characterized in that described each column (2) top is equipped with supporting steel (31), model of the column (4) top on this supporting steel and each column (2) is connected and fixed, supporting steel (31) is provided with the truss (3) crossed over multiple column (2) and install, just upper location grid (5) and lower location grid (6) are equipped with to each column (2) position in this truss (3), described every root anchor bar (21) top is all stretched in truss (3), and connects location with the upper location grid (5) in described truss (3) and lower location grid (6).
2. prefabrication and assembly construction bridge coping positioner according to claim 1, it is characterized in that described truss (3) is the rectangular-shaped frame construction be welded by steel i iron and channel-section steel, described upper location grid (5) is fixedly mounted on just to truss (3) top of each column (2) position, and lower location grid (6) is fixedly mounted on just to truss (3) bottom of each column (2) position.
3. prefabrication and assembly construction bridge coping positioner according to claim 2, it is characterized in that in described upper location grid (5), being provided with the upper positioning bolt (52) that many connect the many anchor bars (21) in location respectively, in lower location grid (6), be provided with the lower positioning bolt (62) that many connect the many anchor bars (21) in location respectively.
4. prefabrication and assembly construction bridge coping positioner according to claim 1, is characterized in that described model of the column (4) top is provided with the upright column bracket (41) being connected and fixed supporting steel (31).
5. prefabrication and assembly construction bridge coping positioner according to claim 1, it is characterized in that described many anchor bars (21) are the center of circle with column (2) center and circumference uniform distribution is embedded in column (2), every root anchor bar (21) is stretched out the top of exposing at column (2) top and is equipped with anchor bolt (23) and pad (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925803.8U CN205171381U (en) | 2015-11-19 | 2015-11-19 | Prefabricated assembly bridge bent cap positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520925803.8U CN205171381U (en) | 2015-11-19 | 2015-11-19 | Prefabricated assembly bridge bent cap positioner |
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| Publication Number | Publication Date |
|---|---|
| CN205171381U true CN205171381U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520925803.8U Withdrawn - After Issue CN205171381U (en) | 2015-11-19 | 2015-11-19 | Prefabricated assembly bridge bent cap positioner |
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| Country | Link |
|---|---|
| CN (1) | CN205171381U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484157A (en) * | 2015-11-19 | 2016-04-13 | 宁波交通工程建设集团有限公司 | Positioning device and construction method of capping beam of prefabricated bridge |
| CN108103936A (en) * | 2017-11-03 | 2018-06-01 | 上海公路桥梁（集团）有限公司 | The method that prefabricated bent cap is installed on column |
| CN113062203A (en) * | 2021-03-01 | 2021-07-02 | 中铁大桥局上海工程有限公司 | Construction method for splicing bridge prefabricated stand column and prefabricated capping beam |
-
2015
- 2015-11-19 CN CN201520925803.8U patent/CN205171381U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484157A (en) * | 2015-11-19 | 2016-04-13 | 宁波交通工程建设集团有限公司 | Positioning device and construction method of capping beam of prefabricated bridge |
| CN105484157B (en) * | 2015-11-19 | 2017-04-26 | 宁波交通工程建设集团有限公司 | Positioning device and construction method of capping beam of prefabricated bridge |
| CN108103936A (en) * | 2017-11-03 | 2018-06-01 | 上海公路桥梁（集团）有限公司 | The method that prefabricated bent cap is installed on column |
| CN113062203A (en) * | 2021-03-01 | 2021-07-02 | 中铁大桥局上海工程有限公司 | Construction method for splicing bridge prefabricated stand column and prefabricated capping beam |
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