CN106677068A - Construction method capable of preventing hollowing at box girder support plate - Google Patents
Construction method capable of preventing hollowing at box girder support plate Download PDFInfo
- Publication number
- CN106677068A CN106677068A CN201611218461.1A CN201611218461A CN106677068A CN 106677068 A CN106677068 A CN 106677068A CN 201611218461 A CN201611218461 A CN 201611218461A CN 106677068 A CN106677068 A CN 106677068A
- Authority
- CN
- China
- Prior art keywords
- support plate
- concrete
- hollowing
- construction method
- vibrating
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a construction method capable of preventing hollowing at a box girder support plate during box girder manufacturing and mainly solves the problem that a method using glue injection to solve the hollowing at the support plate is poor in effect. The construction method includes: anchoring reinforcing steel bars and horizontal reinforcing ribs are arranged on the support plate; the support plate is coated with epoxy resin glue, and gravels are added into the epoxy resin glue; bottom formwork is polished; the face, contacting with the bottom formwork, of the support plate is sufficiently coated with a release agent, and the periphery of the support plate is completely sealed by glass cement; the middle of the support plate and the bottom formwork are drilled, and blocking off is performed after cement paste flows out during concrete vibrating; using a vibrator to guide concrete vibrating, an attaching type vibrator is turned on to perform concrete vibrating after concrete completely covers embedded reinforcing steel bars at the support plate, and the attaching type vibrator is shut down after the chamfer of a girder body is filled with the concrete; two attaching type vibrators are added near the support plate, and a small skylight is formed in the formwork above the support plate. By the construction method, the hollowing at the support plate can be effectively prevented.
Description
Technical field：
The present invention relates to the construction method of hollowing at box beam support plate can be prevented in box beam manufacturing process.
Background technology：
Simple supported box beam is often operation people due to the disguise of bearing Board position and the particularity of construction technology, herein construction quality
The weak link that member easily ignores, it sometimes appear that the percussion of Jing blunts sends at support plate in prefabricated case beam in current check
The empty sound of " rub-a-dub rub-a-dub ", mainly relevant with construction and construction technology the reason for there is hollowing, concrete reason is as follows:
1st, reinforcing bar is too close at the pre-embedded steel slab of support plate top, and vibrating spear is difficult to be inserted into above support plate and fully vibrates.
2nd, coarse aggregate is difficult to during concrete placing, and stone is very few, and cement mortar is on the high side, partially thick, causes concrete at this
Shrink excessive.
3rd, bearing steel plate and concrete shrinkage, the coefficient of expansion are variant, cause to shrink, expand asynchronous, cause concrete
There is small gap and bearing steel plate between.
4th, support plate top concrete vibrating when, in gap air row do not go out, bearing plate top surface exist it is larger or compared with
Many crafters.
5th, pre-buried bearing surface of steel plate is too smooth, and the cohesive force between concrete is inadequate, it is impossible to synchronous.
6th, in pre-, first, whole stretching process, shrinking occurs beam body with pre-buried bearing steel plate because material character is different in concrete
It is asynchronous.
Because support plate belongs to concentration stress point, if dealing with improperly, may cause at bearing during Superstructure Construction
Mutation formula is caved in and the formula of creeping is caved in, and the processing method for adopting at present is at the gap between bearing steel plate and beam body concrete
Injecting glue, but result is undesirable, and traffic safety and beam body stability itself are had a negative impact.
The content of the invention：
The technical problem to be solved is to provide a kind of construction method of hollowing at prevention box beam support plate, and it can make to mix
Solidifying soil is tightly combined with support plate, hollowing phenomenon is eliminated, so as to ensure beam body stability itself and traffic safety.
What above-mentioned purpose was realized in：
The anchor bar of some φ 20mm is put above support plate, the bottom of the anchor bar is fixed on support plate,
Distance at interval of 100mm on support plate arranges one horizontal stiffener, to increase the cohesive force of support plate and concrete, increases
Strong anchor force between steel plate support plate and concrete；Epoxide-resin glue is filled on support plate, is put into in epoxide-resin glue broken
Stone, the spacing of adjacent rubble is advisable with the width less than rubble, can so make bearing plate surface become coarse, increases concrete pair
The cohesive force of support plate, makes concrete compaction at this, reduces the gap between concrete and support plate；The bottom of to before box girder construction
Mould is polished, and whether in place to check support plate fastening bolt, and upper neat bolt is simultaneously tightened, and makes support plate closely connected with bed die；Bearing
Plate and the face fully brushing releasing agent of end template contact, support plate surrounding is complete with glass cement closing, it is ensured that concreting
Serosity is not flowed under support plate in journey, resistance when reducing tensioning；The hole of an a diameter of 25mm, bearing are bored in the middle of support plate
Also the hole of an a diameter of 25mm is bored on end template below plate, the two described holes are connected, and the hole can discharge bearing
The bubble that concrete is produced in process of vibrating at plate, stoppers when vibrating after cement mortar flows out from hole, can make bearing
Crack air between plate and concrete is discharged, and reduces hollowing；
In concreting, support position is where placing at first, should to draw first with the vibrating spear of a diameter of 30mm and smash,
After concrete all covers the embedded bar at support plate, start attached vibrator and vibrated, attached vibrator
Opened using interruption, generally 90s or so stops 60s, after concrete is filled at beam body chamfering, stops adhesion type and vibrates
Device；By increasing attached vibrator quantity, end is set fully to vibrate；Increase by two attached vibrators near support plate,
Simultaneously scuttle is opened at template above support plate, enable vibrating spear to be smoothly inserted into support plate top, make coagulation at support plate
Native fully vibration compacting.
It is an advantage of the invention that：Due in support plate surface smear epoxide-resin glue and being embedded with rubble, on support plate
If horizontal stiffener, so the cohesive force of support plate and concrete can be increased, when beam body casting concrete vibrates, mortar can be flowed into
In the middle of rubble, combined with rubble closely connected, hollowing obtains effectively solving, it is steady to bridge superstructure, traffic safety and beam body itself
It is qualitative to play an important role.This construction method can effectively prevent the generation of hollowing at support plate.
Specific embodiment：
The anchor bar of some φ 20mm is put above support plate, the bottom of the anchor bar is fixed on support plate,
Distance at interval of 100mm on support plate arranges one horizontal stiffener, to increase the cohesive force of support plate and concrete, increases
Strong anchor force between steel plate support plate and concrete；Epoxide-resin glue is filled on support plate, is put into in epoxide-resin glue broken
Stone, the spacing of adjacent rubble is advisable with the width less than rubble, can so make bearing plate surface become coarse, increases concrete pair
The cohesive force of support plate, makes concrete compaction at this, reduces the gap between concrete and support plate；The bottom of to before box girder construction
Mould is polished, and whether in place to check support plate fastening bolt, and upper neat bolt is simultaneously tightened, and makes support plate closely connected with bed die；Bearing
Plate and the face fully brushing releasing agent of end template contact, support plate surrounding is complete with glass cement closing, it is ensured that concreting
Serosity is not flowed under support plate in journey, resistance when reducing tensioning；The hole of an a diameter of 25mm, bearing are bored in the middle of support plate
Also the hole of an a diameter of 25mm is bored on end template below plate, the two described holes are connected, and the hole can discharge bearing
The bubble that concrete is produced in process of vibrating at plate, stoppers when vibrating after cement mortar flows out from hole, can make bearing
Crack air between plate and concrete is discharged, and reduces hollowing；
In concreting, support position is where placing at first, should to draw first with the vibrating spear of a diameter of 30mm and smash,
After concrete all covers the embedded bar at support plate, start attached vibrator and vibrated, attached vibrator
Opened using interruption, generally 90s or so stops 60s, after concrete is filled at beam body chamfering, stops adhesion type and vibrates
Device；By increasing attached vibrator quantity, end is set fully to vibrate；Increase by two attached vibrators near support plate,
Simultaneously scuttle is opened at template above support plate, enable vibrating spear to be smoothly inserted into support plate top, make coagulation at support plate
Native fully vibration compacting.
Claims (1)
1. prevent the construction method of hollowing at box beam support plate, it is characterized in that：Put some φ 20mm's above support plate
Anchor bar, the bottom of the anchor bar is fixed on support plate, and the distance at interval of 100mm on support plate is arranged together
Horizontal stiffener；Epoxide-resin glue is filled on support plate, rubble is put into in epoxide-resin glue, the spacing of adjacent rubble is with little
It is advisable in the width of rubble；Bed die is polished before box girder construction, whether in place to check support plate fastening bolt, upper neat spiral shell
Bolt is simultaneously tightened, and makes support plate closely connected with bed die；Support plate and the face fully brushing releasing agent of end template contact, support plate surrounding is used
Glass cement closing is complete, it is ensured that serosity is not flowed under support plate in concreting process；One is bored in the middle of support plate directly
Footpath is the hole of 25mm, and the hole of an a diameter of 25mm is also bored on the end template below support plate, and the two described holes are connected,
The hole can discharge the bubble that concrete is produced in process of vibrating at support plate, when vibrating after cement mortar flows out from hole
Stopper, discharge can the crack air between support plate and concrete；
In concreting, support position is where placing at first, should to draw first with the vibrating spear of a diameter of 30mm and smash,
After concrete all covers the embedded bar at support plate, start attached vibrator and vibrated, attached vibrator
Opened using interruption, after concrete is filled at beam body chamfering, stop attached vibrator；By increasing attached vibrator
Quantity, makes end fully vibrate；Increase by two attached vibrators near support plate, while opening at template above support plate
Scuttle, enables vibrating spear to be smoothly inserted into support plate top, makes the abundant vibration compacting of concrete at support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218461.1A CN106677068A (en) | 2016-12-26 | 2016-12-26 | Construction method capable of preventing hollowing at box girder support plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218461.1A CN106677068A (en) | 2016-12-26 | 2016-12-26 | Construction method capable of preventing hollowing at box girder support plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106677068A true CN106677068A (en) | 2017-05-17 |
Family
ID=58870716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611218461.1A Pending CN106677068A (en) | 2016-12-26 | 2016-12-26 | Construction method capable of preventing hollowing at box girder support plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106677068A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952451A (en) * | 2019-11-19 | 2020-04-03 | 中国铁建大桥工程局集团有限公司 | Air-sounding prevention method for epoxy resin support |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120108073A (en) * | 2011-03-23 | 2012-10-05 | (주)삼현피에프 | Manufacturing method of box type steel-concrete composite girder and construction method of thereof |
| CN103362069A (en) * | 2013-07-31 | 2013-10-23 | 中铁六局集团有限公司 | Steel and concrete combined box girder concrete wing plate formwork and construction method |
| CN204875498U (en) * | 2015-07-29 | 2015-12-16 | 济南城建集团有限公司 | Device of steel sheet installation under supplementary bridge beam supports |
| CN105239789A (en) * | 2015-10-25 | 2016-01-13 | 赵涛 | Construction process for plugging and consolidating concrete crack through chemical grouting |
| CN205821975U (en) * | 2016-07-19 | 2016-12-21 | 长安大学 | A kind of assembling steel plate composite beam bridge based on bolted steel reinforced concrete combined bridge deck |
-
2016
- 2016-12-26 CN CN201611218461.1A patent/CN106677068A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120108073A (en) * | 2011-03-23 | 2012-10-05 | (주)삼현피에프 | Manufacturing method of box type steel-concrete composite girder and construction method of thereof |
| CN103362069A (en) * | 2013-07-31 | 2013-10-23 | 中铁六局集团有限公司 | Steel and concrete combined box girder concrete wing plate formwork and construction method |
| CN204875498U (en) * | 2015-07-29 | 2015-12-16 | 济南城建集团有限公司 | Device of steel sheet installation under supplementary bridge beam supports |
| CN105239789A (en) * | 2015-10-25 | 2016-01-13 | 赵涛 | Construction process for plugging and consolidating concrete crack through chemical grouting |
| CN205821975U (en) * | 2016-07-19 | 2016-12-21 | 长安大学 | A kind of assembling steel plate composite beam bridge based on bolted steel reinforced concrete combined bridge deck |
Non-Patent Citations (1)
| Title |
|---|
| 顾红新: "高速铁路900t预制箱梁支座板混凝土空洞防治技术", 《国防交通工程与技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952451A (en) * | 2019-11-19 | 2020-04-03 | 中国铁建大桥工程局集团有限公司 | Air-sounding prevention method for epoxy resin support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207176717U (en) | A kind of assembly concrete foot joint of encased steel plate | |
| UA71642C2 (en) | Pre-assembled reinforced-concrete plate and the method to make a prefabricated structure of pre-assembled reinforced-concrete plates | |
| CN102296546A (en) | Treatment scheme of hollow slab bridge hinge joint defects and construction process thereof | |
| CN108999076A (en) | A kind of the class socket joint connection structure and its construction method of column and adjacent members | |
| CN109469349A (en) | A kind of floor strengthening reconstruction method for adding reinforced concrete secondary beam | |
| CN105696790B (en) | Double-layer connecting beam opening formwork system and construction method thereof applied to double-layer connecting beam | |
| CN102425110A (en) | Cast-in-situ concrete construction method for full section of urban overpass box girder | |
| CN111719869A (en) | Masonry engineering construction process | |
| CN107366355A (en) | Add the bean column node and its construction method of new beam on existing reinforced concrete frame column | |
| CN106677068A (en) | Construction method capable of preventing hollowing at box girder support plate | |
| CN202945741U (en) | Non-vibrating concrete column of steel tube | |
| CN107165411A (en) | A kind of Constructional Col-umn Construction technique | |
| CN106498847A (en) | A kind of prefabricated bent cap and attachment structure and the method for attachment of prefabricated stand column | |
| CN112609986A (en) | Method for controlling pouring forming quality of concrete batter post | |
| CN208618661U (en) | Pillar structure based on hollow masonry | |
| KR100540928B1 (en) | method for manufacturing anchor bolt carrying out and an anchor bolt | |
| CN208009742U (en) | A kind of embedded rib superimposed sheet of band and laminated structure member | |
| CN206539016U (en) | Constructional column pours device | |
| CN106223477A (en) | A kind of precast reinforced concrete structure method of attachment | |
| CN110080299A (en) | A kind of shallow embedding mountain tunnel open-cut engineering method | |
| JP5438732B2 (en) | Method for joining concrete members | |
| CN206769201U (en) | A kind of reinforced concrete combination rod structure | |
| CN113719152B (en) | Steel member externally-wrapped prestressed precast concrete reinforced structure and construction method | |
| CN206408924U (en) | Reusable cantilever frame embedded ring | |
| CN205024584U (en) | Pre -stressed reinforcement's segmentation anchor structure in case roof beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170517 |