CN104480858A - Construction method for sealing anchorage of pre-stress concrete box girder and cross girder anchored troughs - Google Patents
Construction method for sealing anchorage of pre-stress concrete box girder and cross girder anchored troughs Download PDFInfo
- Publication number
- CN104480858A CN104480858A CN201410555783.XA CN201410555783A CN104480858A CN 104480858 A CN104480858 A CN 104480858A CN 201410555783 A CN201410555783 A CN 201410555783A CN 104480858 A CN104480858 A CN 104480858A
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- Prior art keywords
- girder
- concrete
- construction
- sealing
- anchored
- Prior art date
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- 239000004567 concrete Substances 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 4
- 239000011513 prestressed concrete Substances 0.000 claims description 7
- 280000765563 Bamboo companies 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 239000002184 metals Substances 0.000 claims description 5
- 239000000203 mixtures Substances 0.000 claims description 2
- 240000003917 Bambusa tulda Species 0.000 claims 1
- 238000000034 methods Methods 0.000 abstract description 3
- 241001330002 Bambuseae Species 0.000 description 4
- 241000219843 Pisum Species 0.000 description 3
- 235000010582 Pisum sativum Nutrition 0.000 description 3
- 210000003660 Reticulum Anatomy 0.000 description 2
- 210000003491 Skin Anatomy 0.000 description 2
- 238000010586 diagrams Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007796 conventional methods Methods 0.000 description 1
- 239000006260 foams Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layers Substances 0.000 description 1
- 230000003020 moisturizing Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
Description
Technical field
The invention belongs to municipal engineering field, relate generally to the construction method of prestressed concrete box girder crossbeam anchor groove sealing off and covering anchorage.
Background technology
Crossbeam anchor groove sealing off and covering anchorage quality is a difficult problem in the urgent need to address in construction always.Conventional method is that first formwork supporting plate adopts chute from tapping outside template to concrete perfusion in anchor groove again, and the method is easy to greatly cause groove inner concrete leakiness due to operation easier of vibrating, and the quality problems such as honeycomb, pitted skin appear in concrete surface.Unit in charge of construction constantly improves construction technology, summing up experience for this reason, such as adopt in construction small-sized vibrating spear, in shake and combine the outer measure such as to shake, but actual effect is often difficult to satisfactory.
Summary of the invention
Object of the present invention is in order to solve the concreting of crossbeam anchor groove sealing off and covering anchorage, difficulty of vibrating, easily there is the common quality defects such as honeycomb, pitted skin, leakiness, and a kind of construction method of prestressed concrete box girder crossbeam anchor groove sealing off and covering anchorage is provided, the present invention is by pre-buried tremie pipe and Screw arbor with nut at both-ends, make beam-ends sealing off and covering anchorage application operability stronger, effectively improve anchor groove sealing off and covering anchorage concrete pouring quality.The present invention both can improve the concrete construction quality of sealing off and covering anchorage, can save concrete again, and operating process is simple, safe and reliable.
The scheme that the technical problem that the present invention solves adopts is:
A kind of construction method of prestressed concrete box girder crossbeam anchor groove sealing off and covering anchorage, prestress box beam crossbeam anchor groove sealing off and covering anchorage system is primarily of side template, pull bar, tremie pipe composition, it is characterized in that carrying out according to the following steps: before box girder webs concrete, at the pre-buried pull bar in beam-ends side, at the pre-buried tremie pipe in web anchor groove top, limit, utilize the side template of pre-buried pull bar mooring anchor groove; Utilize pre-buried tremie pipe, at back vertical casting beams end side surface anchor groove concrete.
Described side template adopts BWPC bamboo to mould plate, and it is multiple elements design plate that BWPC bamboo moulds plate.
Described tremie pipe is metal bellows.
The pull bar mooring anchor groove BWPC bamboo that the present invention utilizes beam body pre-buried moulds plate side template, pea gravel concreten is adopted to build anchor groove side concrete by the vertical blanking of built-in metal bellows, adopt small-sized vibrating spear to be vibrated from tremie pipe simultaneously, reach the effect of concrete compaction.The present invention both can improve the concrete construction quality of sealing off and covering anchorage, can save concrete again, and operating process is simple, safe and reliable.
Accompanying drawing explanation
Fig. 1 is construction schematic diagram of the present invention.
Fig. 2 is tremie pipe layout schematic diagram of the present invention.
Detailed description of the invention
The present invention will be described in detail by reference to the accompanying drawings:
1, anchor groove sealing off and covering anchorage design
As shown in Figure 1, anchor groove sealing off and covering anchorage designs: directly over anchor groove, pre-buried diameter is that 100mm metal bellows 1 is as filling concrete hole, metal bellows 1 is laterally put by spacing 50cm along crossbeam, as shown in Figure 2, checks that whether fill orifice is unobstructed after beam-ends concreting; After anchor head sealing off and covering anchorage and reinforced mesh 6 have been constructed, vertical side template 2, the pre-buried pull bar 5 of fixed form, pull bar 5 adopts diameter Ф 12 full pull bars to join double nut, and vertical horizontal spacing is respectively 20cm, 40cm; Cross bar 4 adopts two Ф 48 × 3 steel pipe, longitudinal pitch 20cm; Side template adopts 8mmBWPC bamboo to mould plate, and periphery double sided foam glue sealing, prevents because spillage causes voids and pits phenomenon.Sealing off and covering anchorage concrete adopts C50 microdilatancy pea gravel concreten 3, the slump 180 ~ 220mm.
2, C50 slightly expanded concrete is built
Adopt hand-push trolley that C50 microdilatancy pea gravel concreten is transported to beam-ends anchor groove preformed hole place, the instrument such as spade and vibrating spear is utilized to be poured into by concrete in anchor groove, insert concrete with 30 type vibrating spears from built-in pipe, continue about 10s, build thickness for every layer and be no more than 30cm, the extravasating hole arranged by side checks whether anchor groove concrete has built full, and finally concrete is filled up built-in pipe, concrete surface slightly exceeds beam face 1 ~ 2cm.
3, form removal, maintenance
I.e. collapsible die after 48 hours, in the winter time or summer, notes after form removal carrying out concrete insulation or moisturizing work.
4, inspect for acceptance
After form removal concrete whether closely knit, have no color differnece, whether flat smooth checks on surface.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410555783.XA CN104480858A (en) | 2014-10-20 | 2014-10-20 | Construction method for sealing anchorage of pre-stress concrete box girder and cross girder anchored troughs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410555783.XA CN104480858A (en) | 2014-10-20 | 2014-10-20 | Construction method for sealing anchorage of pre-stress concrete box girder and cross girder anchored troughs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104480858A true CN104480858A (en) | 2015-04-01 |
Family
ID=52755456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410555783.XA CN104480858A (en) | 2014-10-20 | 2014-10-20 | Construction method for sealing anchorage of pre-stress concrete box girder and cross girder anchored troughs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104480858A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237263A (en) * | 2017-06-15 | 2017-10-10 | 中交航局第工程有限公司 | Mining under railways sealing off and covering anchorage skin hammers method of vibrating into shape |
| CN108505444A (en) * | 2018-04-03 | 2018-09-07 | 中交路桥华东工程有限公司 | A kind of T beams pier top continuous segment hogging moment tooth block sealing end mold |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799279A (en) * | 1985-12-02 | 1989-01-24 | Figg And Muller Engineers, Inc. | Method of constructing the approach and main spans of a cable stayed segmental bridge |
| JP2002004224A (en) * | 2000-06-08 | 2002-01-09 | Min Se Koo | Construction method of single span and multi span composite girder bridge |
| CN101745981A (en) * | 2010-01-26 | 2010-06-23 | 王丹 | Anchor sealing method of prestressed anchor recess |
| CN101838998A (en) * | 2010-04-27 | 2010-09-22 | 中国科学院武汉岩土力学研究所 | Prestressed anchor cable pile sliding wall along river road shoulder and construction method thereof |
| US8387941B2 (en) * | 2008-08-06 | 2013-03-05 | China Major Bridge Engineering Co., Ltd. | Upper-bearing movable formwork for constructing continuous box girder for bridge superstructure |
| CN202766970U (en) * | 2012-09-12 | 2013-03-06 | 中国建筑土木建设有限公司路桥分公司 | Cast-in-place outer vertical face seamless seal anchor structure |
| CN103174095A (en) * | 2013-03-18 | 2013-06-26 | 中国建筑第八工程局有限公司 | Box girder concrete pouring structure with rear-expanding flanges and construction method thereof |
| CN203867179U (en) * | 2014-05-20 | 2014-10-08 | 北京建工国际建设工程有限责任公司 | Template assembly at joint of transverse component and longitudinal component |
-
2014
- 2014-10-20 CN CN201410555783.XA patent/CN104480858A/en not_active Application Discontinuation
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799279A (en) * | 1985-12-02 | 1989-01-24 | Figg And Muller Engineers, Inc. | Method of constructing the approach and main spans of a cable stayed segmental bridge |
| JP2002004224A (en) * | 2000-06-08 | 2002-01-09 | Min Se Koo | Construction method of single span and multi span composite girder bridge |
| US8387941B2 (en) * | 2008-08-06 | 2013-03-05 | China Major Bridge Engineering Co., Ltd. | Upper-bearing movable formwork for constructing continuous box girder for bridge superstructure |
| CN101745981A (en) * | 2010-01-26 | 2010-06-23 | 王丹 | Anchor sealing method of prestressed anchor recess |
| CN101838998A (en) * | 2010-04-27 | 2010-09-22 | 中国科学院武汉岩土力学研究所 | Prestressed anchor cable pile sliding wall along river road shoulder and construction method thereof |
| CN202766970U (en) * | 2012-09-12 | 2013-03-06 | 中国建筑土木建设有限公司路桥分公司 | Cast-in-place outer vertical face seamless seal anchor structure |
| CN103174095A (en) * | 2013-03-18 | 2013-06-26 | 中国建筑第八工程局有限公司 | Box girder concrete pouring structure with rear-expanding flanges and construction method thereof |
| CN203867179U (en) * | 2014-05-20 | 2014-10-08 | 北京建工国际建设工程有限责任公司 | Template assembly at joint of transverse component and longitudinal component |
Non-Patent Citations (1)
| Title |
|---|
| 杜鸣川: "新型节能材料的应用使模板技术获得新突破 用BWPC板实现的弧形桥梁模架系统", 《中国建材报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237263A (en) * | 2017-06-15 | 2017-10-10 | 中交航局第工程有限公司 | Mining under railways sealing off and covering anchorage skin hammers method of vibrating into shape |
| CN107237263B (en) * | 2017-06-15 | 2019-04-16 | 中交一航局第一工程有限公司 | Mining under railways sealing off and covering anchorage skin hammers method of vibrating into shape |
| CN108505444A (en) * | 2018-04-03 | 2018-09-07 | 中交路桥华东工程有限公司 | A kind of T beams pier top continuous segment hogging moment tooth block sealing end mold |
| CN108505444B (en) * | 2018-04-03 | 2019-09-24 | 中交路桥华东工程有限公司 | A kind of T beam pier top continuous segment hogging moment tooth block sealing end mold |
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Application publication date: 20150401 |
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