CN206916632U - The T-shaped just structure line style monitoring point mounting structure of cantilever - Google Patents
The T-shaped just structure line style monitoring point mounting structure of cantilever Download PDFInfo
- Publication number
- CN206916632U CN206916632U CN201720506162.1U CN201720506162U CN206916632U CN 206916632 U CN206916632 U CN 206916632U CN 201720506162 U CN201720506162 U CN 201720506162U CN 206916632 U CN206916632 U CN 206916632U
- Authority
- CN
- China
- Prior art keywords
- rebar
- lengths
- shaped
- measuring point
- cantilever
- 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.)
- Active
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a kind of T-shaped just structure line style monitoring point mounting structure of cantilever, including：First measuring point, the second measuring point and the 3rd measuring point, in pre-buried first lengths of rebar in top of the T-shaped just beam block of structure of cantilever, the upper end of first lengths of rebar protrudes from the top at the top, and first measuring point is arranged on the top of first lengths of rebar；Second measuring point is set directly in the front-end template of the Hanging Basket bed die of the beam block；The opening position corresponding with the front end of the Hanging Basket bed die of the bottom of the beam block is provided with the second lengths of rebar, and the 3rd measuring point is arranged on the top of second lengths of rebar.The utility model can ensure into bridge line style, reduce construction risk, improve construction speed, and operate very simple, not interfere with the level of construction technology, can be effectively by line type control control errors in predetermined scope.
Description
Technical field
Building field is the utility model is related to, the T-shaped just structure line style monitoring point mounting structure of more particularly to a kind of cantilever.
Background technology
With the development of high-speed railway, bridge construction is the key link of bridge construction, with China's transportation business
Rapid development, long-span rigid frame bridge is widely used.Long-span rigid frame bridge, Ji Gaodun, Long span in
All over the body, pier girder construction stress and its complexity, therefore be large span the problems such as stability, line type control, quality control and construction method
The emphasis of rigid frame bridge type.
Cantilever-construction is to build that this kind of bridge is the most economical, efficient construction method.Due to existing very in work progress
More uncertain factors, to reach design requirement by line type control and monitoring technology, construction line style state is carried out Real time identification,
Adjustment, prediction, construction system is set to be in Guaranteed, this smoothly realizes it is vital to design object line style.
However, prior art to it is T-shaped just the line style of structure is monitored when, the problem of setting due to its measuring point, it is difficult to protect
Bridge line style is demonstrate,proved into, construction risk is larger, and construction speed is slow, and complex operation, influences the level of construction technology of knowing clearly, causes line style
Control error excessive.
Utility model content
The purpose of this utility model is to provide a kind of T-shaped just structure line style monitoring point mounting structure of cantilever, to solve existing skill
The problem of being set in art due to its measuring point, it is difficult to ensure that construction risk is larger, and construction speed is slow, and complex operation into bridge line style,
The level of construction technology of knowing clearly is influenceed, the problem of causing line type control error excessive.
In order to solve the above technical problems, the utility model provides a kind of T-shaped just structure line style monitoring point mounting structure of cantilever,
Including：First measuring point, the second measuring point and the 3rd measuring point, it is described in pre-buried first lengths of rebar in top of the T-shaped just beam block of structure of cantilever
The upper end of first lengths of rebar protrudes from the top at the top, and first measuring point is arranged on the top of first lengths of rebar；
Second measuring point is set directly in the front-end template of the Hanging Basket bed die of the beam block；The bottom of the beam block with the extension
Opening position corresponding to the front end of basket bed die is provided with the second lengths of rebar, and the 3rd measuring point is arranged on the top of second lengths of rebar
End.
Preferably, the distance between front end face of first lengths of rebar and the beam block is 10 centimetres.
Preferably, the length of appearing of first lengths of rebar is 2-3 centimetre.
Preferably, the length of appearing of second lengths of rebar is 2-3 centimetre.
Preferably, the number of first measuring point is three.
Preferably, the number of second measuring point is two.
Preferably, a diameter of 16mm of first lengths of rebar and second lengths of rebar.
Preferably, red paint is scribbled at the top of first lengths of rebar and second lengths of rebar.
It can be easier to realize observation using the T-shaped just structure line style monitoring point mounting structure of the cantilever in the utility model, from
And ensure into bridge line style, the risk of construction is reduced, improves construction speed, and very simple is operated, do not interfere with construction skill
The level of art, can be effectively by line type control control errors in predetermined scope.
In addition to objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.The utility model will be described in further detail below.
Brief description of the drawings
A part of Figure of description of the present utility model is formed to be used for providing further understanding to of the present utility model, this
The schematic description and description of utility model is used to explain the utility model, does not form to improper limit of the present utility model
It is fixed.In the accompanying drawings：
Fig. 1 is a kind of schematic diagram of the T-shaped just structure of cantilever；
Fig. 2 is the measuring point mounting structure schematic diagram of the T-shaped just structure of the cantilever in the utility model；
Fig. 3 is the 0# block absolute altitude measuring point distribution schematic diagrams of the T-shaped just structure of the cantilever in Fig. 2；
Fig. 4 is the fulcrum section absolute altitude measuring point distribution schematic diagram of the T-shaped just structure of the cantilever in Fig. 2；
Fig. 5 is the span centre section absolute altitude measuring point distribution schematic diagram of the T-shaped just structure of the cantilever in Fig. 2；
Fig. 6 is per the side elevation schematic diagram of stage point layout in the utility model；
Fig. 7 is per the positive elevational schematic view of stage point layout in the utility model.
Reference in figure：1st, the first measuring point；2nd, the second measuring point；3rd, the 3rd measuring point；4th, Hanging Basket bed die；5th, construction section；
6th, current construction section.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order that those skilled in the art more fully understand the utility model, it is real below in conjunction with the utility model
The accompanying drawing in example is applied, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that be described
Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all should
When the scope for belonging to the utility model protection.
Long-span rigid frame bridge, Ji Gaodun, Long span, pier girder construction stress and its complexity, therefore stability, line
The problems such as type control, quality control and construction method is the emphasis of large span rigid frame bridge type.Cantilever-construction is to build this kind of bridge
Beam is the most economical, efficient construction method.
The T-shaped just structure line style monitoring point mounting structure of cantilever in the application, especially suitable for the T-shaped firm structure of large span long cantilever
In terms of the line type control monitoring technology, including the construction such as line type control, displacement measuring points arrangement, observation technology, Hanging Basket positioning of constructing
Technology contents.
Fig. 1 shows the structural representation of one kind (80+80) the m prestressed concrete T-Frame bridges that the utility model is related to.
The T-shaped just structure has the characteristics that span is big, section is more, pre-stress system is multidirectional and complicated.It is many due to existing in work progress
Uncertain factor, for reach be designed to bridge line style requirement pass through line type control monitoring technology, to Construction State progress Real time identification,
Adjustment, prediction, construction system is in Guaranteed, and then make design object safety, smoothly realize.
In the T-shaped just structure shown in Fig. 1, bridge body section is using single box single chamber, the straight web form of variable cross-section.Box beam top width
12.6m, box beam bottom width 7.0m.Top plate thickness is 400mm in addition near beam-ends and near central bearing point；Web thickness 550-900mm,
Change by broken line；Bottom plate thickness is changed to the 1200mm of root by the 400mm of span centre by second-degree parabola.It is complete be associated in end fulcrum and in
4 diaphragm plates are set at fulcrum altogether.Tabula plate thickness：1.5m at fulcrum is held, 1.6m at central bearing point.Diaphragm plate is provided with hole, for inspection
The personnel of looking into pass through.The coxostermum of box beam two on the outside of roof and floor intersection with using circular arc chamfering transition.Girder effective span is (80
+ 80) m, bearing center line to beam-ends 0.75m, beam total length 161.5m.Deck-molding is 9.0m at central bearing point kernel of section；End bay
Contour section of 10.75m, deck-molding is 4.5m at kernel of section.Beam body uses C55 concrete, and end-blocking uses C55 concrete, pier bottom one
Determine to use C55 anti-erosion concrete in scope, sealing off and covering anchorage end uses strength grade as C60 expansive concretes, protecting wall, shield
And cable trough straight wall strength grade of concrete is C40.
In the T-shaped just prestress system of structure shown in Fig. 1, longitudinal prestressing steel Shu Caiyong tensile strength standard values are
1860MPa high-strength underrelaxation steel strand wires, nominal diameter 15.2mm, its technical conditions should meet the standards of GB/T5224-2003.
Pipeline is formed by internal diameter 90mm metal bellows.Metal bellows should meet《Metal bellows for prestressed concrete》
(JCT225-2007) require；Anchorage should meet《Railway engineering use for tendon strand tapered anchorage, fixture and connector technique bar
Part》(TB/T3193-2008), tensioning use matched anchorage equipment.Lateral prestressing tendon uses tensile strength standard
It is worth the high-strength underrelaxation steel strand wires for 1860MPa, nominal diameter 15.2mm, its technical conditions should meet the marks of GB/T5224-2003
It is accurate.Using BM15-5 (P) anchorage and anchoring system；Tensioner uses YDC240Q type jack；Pipeline uses 90 × 19mm
Flat metal bellows pore-forming.No. 0 block of vertical prestressed reinforcement uses the steel strand wires of 3-7 Φ 5, tension normal intensity fpk=
1860MPa, it is supporting to use the low retraction stretch-draw jack of the type punchings of YCD1000-75 using the low shrinkage anchorages of DSM15-3,
Internal diameter 50mm metal bellows pore-formings, remaining vertical prestressing steel Shu Caiyong Φ 25mm prestressed concrete spiral, model
PSB830, tensile strength standard value 830MPa, its technical conditions should meet the standards of GB/T 20065-2006, and anchoring system is adopted
With the type anchorages of JLM -25；Tensioning uses YC80 type jack；Pipeline is formed by internal diameter Φ 35mm conduit peschel pore-formings.
In the T-shaped just prestress system of structure shown in Fig. 1, using Hanging Basket cantilever construction mode, cantilever-construction is pre-
The main construction method of prestressed concrete T structures, for prestressed concrete T shaped bridge bridge, though had perhaps using Cantilever Construction Method
More advantages, but the formation of this kind of bridge will pass through a complicated process, when across footpath is larger, to ensure to close up preceding two cantilever
The deviation of end vertical deflection is no more than permissible range, and the work progress of such bridge must be controlled.Deflection observation data is
The most important foundation of bridge line style is controlled into, by taking the prestressed concrete T shaped bridge line style in Fig. 1 as an example, its monitoring section is located at each
The end in stage, as shown in Figure 2.
Therefore, the utility model provides a kind of T-shaped just structure line style monitoring point mounting structure of cantilever, including：First measuring point
1st, the second measuring point 2 and the 3rd measuring point 3, in pre-buried first lengths of rebar in top of the T-shaped just beam block of structure of cantilever, first lengths of rebar
Upper end protrude from the top at the top, first measuring point 1 is arranged on the top of first lengths of rebar.Described second surveys
In the front-end template for the Hanging Basket bed die that point 2 is set directly at the beam block；The bottom of the beam block with the Hanging Basket bed die 4
Opening position corresponding to front end is provided with the second lengths of rebar, and the 3rd measuring point 3 is arranged on the top of second lengths of rebar.
Wherein it is preferred to the distance between front end face of first lengths of rebar and the beam block is 10 centimetres.It is preferred that
The length of appearing of ground, first lengths of rebar and/or second lengths of rebar is 2-3 centimetre.
Preferably, the number of first measuring point 1 is three, and/or the number of second measuring point 2 is two.
It refer to Fig. 3, arrangement 0# block absolute altitude measuring points are the designed elevations for controlroof, while each after also serving as are hanged
Pour stage elevation observation datum mark, it is preferable that the top plate of each 0# blocks respectively arranges 7 elevation observation stations.
As shown in Figure 3 and Figure 4, in the cantilever stage, 11 symmetrical elevation observation stations are arranged on each monitoring section.This
Sample, the amount of deflection of box beam can be not only measured, while box beam can be observed and whether twisted deformation.
It is highly preferred that a diameter of 16mm of first lengths of rebar and second lengths of rebar, it is highly preferred that described first
Red paint is scribbled at the top of lengths of rebar and second lengths of rebar, is used for marking.
The setting arrangement principle of each measuring point in the utility model is as follows：
(1) close proximity to web；
(2) measuring point is from beam section end 10cm；
(3) without prejudice to construction and the walking of Hanging Basket, fix；
(4) it is easy to protect；
(5) as far as possible reduce measurement work, the elevation of whole measuring points can be tested by such as founding an instrument, be preferably disposed on
On the inside of Hanging Basket, it can also so reduce and turn error caused by instrument.
By adopting the above-described technical solution, using the T-shaped just structure line style monitoring point installation knot of the cantilever in the utility model
Structure can be easier to realize observation, so as to ensure into bridge line style, reduce the risk of construction, improve construction speed, and operate
Very simple, the level of construction technology is not interfered with, can be solved effectively by line type control control errors in predetermined scope
The problem of being set in the prior art due to its measuring point, it is difficult to ensure that construction risk is larger, and construction speed is slow into bridge line style, and grasp
Make complicated, the level for the construction technology that influences to know clearly, the problem of causing line type control error excessive.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (8)
- A kind of 1. T-shaped just structure line style monitoring point mounting structure of cantilever, it is characterised in that including：First measuring point (1), the second measuring point (2) and the 3rd measuring point (3), in pre-buried first lengths of rebar in top of the T-shaped just beam block of structure of cantilever, the upper end of first lengths of rebar The top at the top is protruded from, first measuring point (1) is arranged on the top of first lengths of rebar；Second measuring point (2) it is set directly in the front-end template of the Hanging Basket bed die of the beam block；The bottom of the beam block with the Hanging Basket bed die (4) Front end corresponding to opening position be provided with the second lengths of rebar, the 3rd measuring point (3) is arranged on the top of second lengths of rebar.
- 2. the T-shaped just structure line style monitoring point mounting structure of cantilever according to claim 1, it is characterised in that first steel The distance between front end face of muscle section and the beam block is 10 centimetres.
- 3. the T-shaped just structure line style monitoring point mounting structure of cantilever according to claim 1, it is characterised in that first steel The length of appearing of muscle section is 2-3 centimetre.
- 4. the T-shaped just structure line style monitoring point mounting structure of cantilever according to claim 1, it is characterised in that second steel The length of appearing of muscle section is 2-3 centimetre.
- 5. the T-shaped just structure line style monitoring point mounting structure of cantilever according to claim 1, it is characterised in that described first surveys The number of point (1) is three.
- 6. the T-shaped just structure line style monitoring point mounting structure of cantilever according to claim 1, it is characterised in that described second surveys The number of point (2) is two.
- 7. the T-shaped just structure line style monitoring point mounting structure of cantilever according to claim 1, it is characterised in that first steel A diameter of 16mm of muscle section and second lengths of rebar.
- 8. the T-shaped just structure line style monitoring point mounting structure of cantilever according to claim 1, it is characterised in that first steel Red paint is scribbled at the top of muscle section and second lengths of rebar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720506162.1U CN206916632U (en) | 2017-05-09 | 2017-05-09 | The T-shaped just structure line style monitoring point mounting structure of cantilever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720506162.1U CN206916632U (en) | 2017-05-09 | 2017-05-09 | The T-shaped just structure line style monitoring point mounting structure of cantilever |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206916632U true CN206916632U (en) | 2018-01-23 |
Family
ID=61307319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720506162.1U Active CN206916632U (en) | 2017-05-09 | 2017-05-09 | The T-shaped just structure line style monitoring point mounting structure of cantilever |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206916632U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988231A (en) * | 2017-05-09 | 2017-07-28 | 中铁二十二局集团第工程有限公司 | The T-shaped firm structure line style monitoring point mounting structure of cantilever and its line type control monitoring method |
-
2017
- 2017-05-09 CN CN201720506162.1U patent/CN206916632U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988231A (en) * | 2017-05-09 | 2017-07-28 | 中铁二十二局集团第工程有限公司 | The T-shaped firm structure line style monitoring point mounting structure of cantilever and its line type control monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105651684B (en) | The detection method of post-tensioned concrete structure friction loss and anchorage loss | |
| CN101418542B (en) | Cable system construction method of spatial self-anchored rope-suspension bridge | |
| CN101781879B (en) | Construction method of single-pylon cable-stayed bridge without dorsal cables | |
| CN109137744B (en) | Asymmetric construction method and control method for main truss of large-span flexible suspension bridge | |
| CN103034224B (en) | Multi-point remote monitoring system for settlement | |
| CN102922601B (en) | Bridge prestress tensioning control and feedback method | |
| CN104790301B (en) | A kind of cable-styled bridge system transform hoist cable tensioning one-time-reach-place construction method | |
| CN102767176A (en) | Hoisting positioning construction method of pile foundation steel reinforcement cage | |
| CN109853394A (en) | Arch bridge cable hoisting tower button integrated construction engineering method | |
| CN104060544A (en) | Construction technology of pipeline suspension cable span bridge body installation | |
| CN106758820A (en) | A kind of continuous Cast-in-situ Beam prestressing tendon stretch-draw construction method of minor radius | |
| CN106988231A (en) | The T-shaped firm structure line style monitoring point mounting structure of cantilever and its line type control monitoring method | |
| CN102433880A (en) | Simply-support guide frame of sinking steel protecting barrel and construction method for sinking steel protecting barrel | |
| CN106436576A (en) | Constructing method of main tower of cable-stayed bridge through circumferential prestressing force | |
| CN102493471A (en) | Suspending installation construction process method of structural foot margin anchor bolt | |
| CN207646875U (en) | A kind of cantilevered structure with reinforcing pull rod | |
| CN206916632U (en) | The T-shaped just structure line style monitoring point mounting structure of cantilever | |
| CN107119582B (en) | T-shaped rigid frame bridge back tower cable-stayed reinforcing structure and construction method thereof | |
| CN107476263A (en) | A kind of construction method of prestressed pier anchor cable | |
| CN106017607B (en) | Floating monitoring system and its monitoring method of the formwork jumbo in self-compacting concrete | |
| CN109467014B (en) | Wall-attached structure for large-tonnage tower crane super-large load in large wind environment | |
| CN101994294A (en) | Casting construction of triangular light hanging basket cantilever for highway engineering | |
| CN107237404A (en) | A kind of overhanging steel structure and its installation method with reinforcing pull rod | |
| CN204944479U (en) | The wide bridge foundation settlement difference observation device of a kind of spelling | |
| CN103334380B (en) | The conversion method of flying swallow bowstring arch bridge external prestressing anchor cable and permanent tie-rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100040 86 Lugu Road, Shijingshan District, Beijing Co-patentee after: China Railway 22nd Construction Bureau Co., Ltd. Patentee after: China Railway twenty-two Bureau Group Railway Engineering Co., Ltd. Address before: 100040 86 Lugu Road, Shijingshan District, Beijing Co-patentee before: China Railway 22nd Construction Bureau Co., Ltd. Patentee before: China Railway 22nd Construction Bureau 1st Engineering Co., Ltd. |