CN105113639A - Connector with prefabricated steel pipe concrete beam segment and connecting method thereof - Google Patents

Connector with prefabricated steel pipe concrete beam segment and connecting method thereof Download PDF

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Publication number
CN105113639A
CN105113639A CN201510390433.7A CN201510390433A CN105113639A CN 105113639 A CN105113639 A CN 105113639A CN 201510390433 A CN201510390433 A CN 201510390433A CN 105113639 A CN105113639 A CN 105113639A
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CN
China
Prior art keywords
steel pipe
concrete
connector
segment
prefabricated
Prior art date
Application number
CN201510390433.7A
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Chinese (zh)
Inventor
樊健生
孙启力
Original Assignee
清华大学
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 清华大学 filed Critical 清华大学
Priority to CN201510390433.7A priority Critical patent/CN105113639A/en
Publication of CN105113639A publication Critical patent/CN105113639A/en

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Abstract

The invention relates to a prefabricated steel pipe concrete beam field connecting method, the method is suitable for a large span bridge decking, can realize a steel pipe concrete structure prefabricated assembling construction mode, and belongs to the structure engineering technical field; the method comprises the following steps: one end of an outer steel pipe in the prefabricated steel pipe concrete is welded with a segment of cone lining steel pipe; pouring concrete in the steel pipe in a vertical state; two segments in the construction field are centered and spliced, and the outer steel pipe is connected through a butt joint welding slit; high-strength mortar or high-strength grouting material are poured into a grouting port until the mortar overflows from a stock outlet, then the grouting port and the stock outlet are welded and sealed; a proper gap between the inner and outer steel pipes is used for correcting structure axis misalignment; a mud jacking process can ensure tight contact of the filled concrete of the two segments; the method is simple in structure, less in steel bar consumption, convenient in construction, fast in filed mounting speed, small in moisture wet working amount, excellent in force bearing performance, reliable in force transmission, and can less affect surrounding environment.

Description

Connector of a kind of Prefabricated concrete-filled steel tube girder segment and attaching method thereof

Technical field

The present invention relates to connector of a kind of Prefabricated concrete-filled steel tube girder segment and attaching method thereof, belong to technical field of structural engineering.

Background technology

Along with construction scale of projects grows with each passing day, development structure prefabrication and assembly construction technology makes Prefabricated concrete-filled steel tube adapt to industrialization construction, and reduce situ wet workload, lifting construction efficiency and economy, also can promote that concrete filled steel tube is applied in bridge field as longeron.And Prefabricated concrete-filled steel tube joint is key position, it is comparatively large to bear axial compression and moment of flexure, will ensure that concrete axial is to close contact especially.Steel pipe is directly spliced after-pouring inner concrete by common prefabrication and assembly construction method cannot ensure that inner concrete is closely knit, and splice region power transmission is not direct, and globality is poor, or adopts complicated splice region structure, adds difficulty of construction, extends the duration, less economical.

Summary of the invention

The present invention is directed to deficiency of the prior art, propose connector of a kind of Prefabricated concrete-filled steel tube girder segment and attaching method thereof, made by steel tube concrete beam and all complete in the factory, the on-the-spot sections that only need complete connects.Simple structure of the present invention, rolled steel dosage is few, easy construction, and in-site installation speed is fast, and wet trade amount is little, little to surrounding environment influence, and stress performance is good simultaneously, the joint connection in site method between the reliable Prefabricated concrete-filled steel tube beam of power transmission.

Technical scheme of the present invention is as follows:

A connector for Prefabricated concrete-filled steel tube girder segment, is characterized in that, this connector is a taper lined steel pipe, and it is welded in one end of outer steel pipe.

The connector of Prefabricated concrete-filled steel tube girder segment of the present invention, the length that taper lined steel pipe stretches out outer steel pipe meets steel pipe build-in and passes curved requirement.

A method of attachment for Prefabricated concrete-filled steel tube girder segment, comprises the steps:

1) Prefabricated concrete-filled steel tube girder segment, one section of taper lined steel pipe is welded in one end of outer steel pipe, under the vertical state of steel pipe, build pipe inner concrete, ensure two ends concordant and outside steel pipe pre-set groove;

2) job site is spliced after two segment centering, connects outer steel pipe by butt weld, pours into high-strength mortar or high-strength grout afterwards from grouting mouth, will to be in the milk mouth and grout outlet sealing after grout outlet has mortar spilling.

4, method of attachment according to claim 3, is characterized in that, described taper lined steel pipe extension elongation meets steel pipe build-in and passes curved requirement.

The present invention has following beneficial effect relative to prior art:

(1) adopt the mode of prefabrication scene splicing, ensure that the closely knit of steel pipe inner concrete, good integrity, improve construction quality and anti-seismic performance; (2) the method for attachment simple structure of Prefabricated concrete-filled steel tube beam, easy construction, in-site installation speed is fast, concrete wet trade amount is little, little to surrounding environment influence, meets the requirement of green construction; (3) connecting structure stress performance is good, and power transmission is reliable; (4) adopt embedded sleeve pipe to make to there is space between sections, can do and necessarily regulate to correct structure misalignment of axe in scene.

Accompanying drawing explanation

Fig. 1 is that splicing of the present invention completes schematic diagram.

Fig. 2 is butt jointing structure of the present invention and schematic cross-section.

Fig. 3 is the overall schematic of steel pipe concrete segment of the present invention.

In figure: the outer steel pipe of 1-Prefabricated concrete-filled steel tube beam; 2-taper lined steel pipe; 3-pre-concreting; 4-high-strength mortar or high-strength grout; 5-grouting mouth; 6-grout outlet; 7-butt weld.

Detailed description of the invention

Below in conjunction with accompanying drawing, structure of the present invention, processing and use procedure are further described.

The connector of a kind of Prefabricated concrete-filled steel tube girder segment of the present invention, this connector is a taper lined steel pipe 2, and it is welded in one end of outer steel pipe, as shown in Figure 3.The length that described taper lined steel pipe stretches out outer steel pipe meets steel pipe build-in and passes curved requirement.

Figure 1 shows that overall schematic of the present invention.

The method of attachment Specific construction step of Prefabricated concrete-filled steel tube girder segment of the present invention is as follows:

1) be prefabricated in the factory concrete filled steel tube girder segment (as shown in Figure 3), described sections comprises prefabricated reinforced concrete outer steel pipe 1, taper lined steel pipe 2, one section of taper lined steel pipe 2 is welded in one end of outer steel pipe 1, under the vertical state of steel pipe, build pipe inner concrete 3, ensure two ends concordant and outside steel pipe 1 pre-set groove.

2) (as shown in Figure 1) is spliced by after two segment centering in job site, connects outer steel pipe 1 by butt weld 7.Pour into high-strength mortar or high-strength grout 4 from grouting mouth 5 afterwards, will to be in the milk mouth and grout outlet sealing after grout outlet 6 has mortar to overflow.

Step 1) taper lined steel pipe extension elongation should meet steel pipe build-in and pass curved requirement, adopts taper lined steel pipe to make step 2) splicing can correct structure misalignment of axe; Step 2) mud jacking operation can ensure two segment concrete filled between closely knit contact.

Connector of Prefabricated concrete-filled steel tube girder segment of the present invention and attaching method thereof, is applicable to Loads of Long-span Bridges bridge deck, is conducive to the prefabrication and assembly construction mode of construction realizing encased structures.The present invention adopts the mode of prefabrication scene splicing, ensure that the closely knit of steel pipe inner concrete, good integrity, improves construction quality and anti-seismic performance; The method of attachment simple structure of Prefabricated concrete-filled steel tube beam, easy construction, in-site installation speed is fast, concrete wet trade amount is little, little to surrounding environment influence, meets the requirement of green construction; Connecting structure stress performance is good, and power transmission is reliable; Adopt embedded sleeve pipe to make to there is space between sections, can do and necessarily regulate to correct structure misalignment of axe in scene.

Claims (4)

1. a connector for Prefabricated concrete-filled steel tube girder segment, is characterized in that, this connector is a taper lined steel pipe, and it is welded in one end of outer steel pipe.
2. the connector as requested described in 1, is characterized in that, the length that described taper lined steel pipe stretches out outer steel pipe meets steel pipe build-in and passes curved requirement.
3. a method of attachment for Prefabricated concrete-filled steel tube girder segment, is characterized in that, the method comprises the steps:
1) Prefabricated concrete-filled steel tube girder segment, one section of taper lined steel pipe is welded in one end of outer steel pipe, under the vertical state of steel pipe, build pipe inner concrete, ensure two ends concordant and outside steel pipe pre-set groove;
2) job site is spliced after two segment centering, connects outer steel pipe by butt weld, pours into high-strength mortar or high-strength grout afterwards from grouting mouth, will to be in the milk mouth and grout outlet sealing after grout outlet has mortar spilling.
4. method of attachment according to claim 3, is characterized in that, described taper lined steel pipe extension elongation meets steel pipe build-in and passes curved requirement.
CN201510390433.7A 2015-07-06 2015-07-06 Connector with prefabricated steel pipe concrete beam segment and connecting method thereof CN105113639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510390433.7A CN105113639A (en) 2015-07-06 2015-07-06 Connector with prefabricated steel pipe concrete beam segment and connecting method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510390433.7A CN105113639A (en) 2015-07-06 2015-07-06 Connector with prefabricated steel pipe concrete beam segment and connecting method thereof

Publications (1)

Publication Number Publication Date
CN105113639A true CN105113639A (en) 2015-12-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510390433.7A CN105113639A (en) 2015-07-06 2015-07-06 Connector with prefabricated steel pipe concrete beam segment and connecting method thereof

Country Status (1)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1113139A (en) * 1997-06-26 1999-01-19 East Japan Railway Co Corner angle joint between reinforced bar or steel framed reinforced concrete structure and various columnar structure, and joining method therefor
CN101713219A (en) * 2009-11-06 2010-05-26 沈阳建筑大学 Precast reinforced concrete frame structure system
CN102269136A (en) * 2011-08-15 2011-12-07 上海交通大学 Tower frame of large wind driven generator
CN102966185A (en) * 2012-12-06 2013-03-13 河北联合大学 Novel concrete-filled steel tube connection joint and construction method thereof
CN204059345U (en) * 2014-09-10 2014-12-31 安徽省交通建设有限责任公司 Preformed pile casing method syndeton
CN104278800A (en) * 2013-07-05 2015-01-14 长江大学 Assembly type steel pipe concrete column connection structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1113139A (en) * 1997-06-26 1999-01-19 East Japan Railway Co Corner angle joint between reinforced bar or steel framed reinforced concrete structure and various columnar structure, and joining method therefor
CN101713219A (en) * 2009-11-06 2010-05-26 沈阳建筑大学 Precast reinforced concrete frame structure system
CN102269136A (en) * 2011-08-15 2011-12-07 上海交通大学 Tower frame of large wind driven generator
CN102966185A (en) * 2012-12-06 2013-03-13 河北联合大学 Novel concrete-filled steel tube connection joint and construction method thereof
CN104278800A (en) * 2013-07-05 2015-01-14 长江大学 Assembly type steel pipe concrete column connection structure
CN204059345U (en) * 2014-09-10 2014-12-31 安徽省交通建设有限责任公司 Preformed pile casing method syndeton

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Application publication date: 20151202

RJ01 Rejection of invention patent application after publication