CN106522561A - Long-span concrete frame beam bonded prestressed post-cast strip inside stretching construction method - Google Patents
Long-span concrete frame beam bonded prestressed post-cast strip inside stretching construction method Download PDFInfo
- Publication number
- CN106522561A CN106522561A CN201610944762.6A CN201610944762A CN106522561A CN 106522561 A CN106522561 A CN 106522561A CN 201610944762 A CN201610944762 A CN 201610944762A CN 106522561 A CN106522561 A CN 106522561A
- Authority
- CN
- China
- Prior art keywords
- tensioning
- con
- corrugated tube
- cast strip
- concrete
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Abstract
The invention discloses a long-span concrete frame beam bonded prestressed post-cast strip inside stretching construction method. The method comprises the steps of mounting of a strutbeam bottom mold and binding of nonprestressed reinforcements, welding of a prestressed tendon support, mounting of corrugated pipes, penetrating arrangement of prestressed tendons, acceptance of concealed work, concrete pouring, stretching of the prestressed tendon, grouting of pore channels and anchor sealing of the stretching end, wherein the step of penetrating arrangement of the prestressed tendons comprises the substeps of penetrating arrangement of the corrugated pipes at the two ends or one end, binding of corrugated pipe supporting points, mounting of spiral bars and anchor bearing plates at the stretching end and blocking of a post-cast strip formwork. The method adopts a post-cast strip inside bonded prestressed beam construction method, structural reserved holes are reduced, and the structure integrity is ensured; and by adopting the design that the bonded prestressed stretching end is arranged in a post-cast strip, the design stress is ensured, the stress loss is reduced, and thus the structure safety is ensured.
Description
Technical field
The present invention relates to construction techniques, and in particular in large-span concrete Vierendeel girder bonded prestress post-cast strip
Stretch-draw construction method.
Background technology
Bonded prestressed beam stretching end arranges construction and typically adopts haunch tensioning, goes out stretching end using haunched slab, it is ensured that
Tension operation space, then using pouring hole and carry out tensioning operation after reserving tensioning after stretching end.
First reserved opening reinforcing bar is cut off, tension operation is carried out, prestressed stretch-draw, grouting is treated, after the completion of sealing off and covering anchorage operation,
Tensioning hole will be poured again after reserving carries out the rejecting of the slag inclusions such as template, the lumps of wood totally, carries out support body and sets up and formwork erection, bar list
Face is cleaned out with brush cleaning, then carries out joint welding using same model reinforcing bar and connect, with than former concrete after the completion of reinforcement installation
The concrete of a high strength grade is poured, and carries out concrete curing work, enter after reaching design strength again after the completion of pouring
The dismounting of row support body template.
Do haunched slab tensioning, due to haunch conduct oneself with dignity it is larger, reserved after pour hole complex procedures, construct it is inconvenient and dangerous,
Haunch tensioning angle easily produces the adverse effects such as stress loss.
The content of the invention
Goal of the invention：In order to reduce stress loss, ultra stretching fracture of wire equivalent risk that angle-changing extension brings and it is reserved after pour hole
The problems such as complex procedures brought, dangerous, leak, not whole outward appearance, the present invention provides a kind of large-span concrete Vierendeel girder to be had
Stretch-draw construction method in binding prestress post-cast strip, it is ensured that the construction quality of bonded prestressed beam tensioning.
Technical scheme：Stretching construction side in large-span concrete Vierendeel girder bonded prestress post-cast strip of the present invention
Method, installs including a beam bottom board and nonprestressed reinforcement colligation, welding presstressed reinforcing steel support, corrugated tube installation, presstressed reinforcing steel are worn
If, acceptance of concealed work, casting concrete, tension of prestressed tendon, duct grouting, stretching end sealing off and covering anchorage；
Presstressed reinforcing steel wear including：Both ends or one end corrugated tube wears → and the colligation corrugated tube strong point → install in stretching end
Spiral bar and anchor plate → alter-pouring strips mould plate closure, wherein post-cast strip is first blocked using foam concrete heat-preserving plate, then is adopted
Blocked with template bar；
Tension of prestressed tendon：
(1) tension sequence：General sequence is sectional tensioning, to every section of prestressed frame beam in Vierendeel girder using order
The mode of drawing carries out symmetrical tensioning from both sides to centre or from centre to both sides, and the mode of secondary beam after first girder, pretensioning are same
The prestressing tendon in individual direction；
(2) stretching process：Tensioned at one end carries out tensioning in component one end using a jack, and two ends tensioning adopts 2
Jack after the completion of component two ends carry out tensioning or first tensioning at one end simultaneously arrives the other end again and mends drawing；
(3) stressing sequence：
(31) in beam, presstressed reinforcing steel is laid for straight line：0 → 10% ó con → 100% ó con are anchored；
(32) in beam, presstressed reinforcing steel is that curve is laid and hole count is less than or equal to 9 holes：0 → 10% ó con → 60% ó con →
100% ó con are anchored；
(33) in beam, presstressed reinforcing steel is that curve is laid and big 9 hole of hole count：0 → 10% ó con → 30% ó con → 60% ó con
→ 100% ó con are anchored.
Further, the two ends corrugated tube presstressed reinforcing steel wears process：After steel wire bundle is opened, bunchy is from any one
End penetrates corrugated tube, it is ensured that penetrate the steel strand wires equal length for exposing at rear two ends, it is ensured that stretching end working length is more than 1m；One end
Corrugated tube presstressed reinforcing steel wears process：Penetrate from fixing end corrugated tube after being first arranged P anchor plates, spiral bar and constraint, fixing end
Extruding anchor will be adjacent to P anchor plates.
Further, should check before the casting concrete whether the position of corrugated tube and anchor plate is correct, and joint is
It is no firm；When concrete enters mould, corrugated tube should be avoided as far as possible from being impacted by excessive, in case corrugated tube is shifted and shriveled；Coagulation
Soil should be layered and vibrate, and note vibration compacting；Concrete vibrator definitely can not direct vibration corrugated tube；Concrete examination is made in time
Block, and the concrete test block for setting cured under same condition is stayed by job specfication requirement, to determine the tensioning time；After concreting should and
When conserve, check and clear up duct, anchor plate and grout hole.
Above-mentioned technical proposal, tension of prestressed tendon proof stress σ are improved furthercon=0.75fptk, i.e.,
1395Mpa；When being stretched to whole pulling force, lotus 2min is held；Stretching force per beam presstressed reinforcing steel is N=1.0 σcon·As；Stretching extension
Value should be from 0.1 σconWith 1.0 σcon, measure at twice and calculate, and make on-the-spot record；During tensioning, oil pressure slow, steady should rise；It is real
Border stretch value and calculated extension value deviation otherwise should should be suspended tensioning, ascertain the reason and take measures within+6%～-6%
After can continue tensioning.
Beneficial effect：Compared with prior art, advantages of the present invention：(1) applied using bonded prestressed beam in post-cast strip
Work method, reduces structure hole to be provided, it is ensured that structural integrity；(2) using setting bonded prestressed beam in post-cast strip
Pull end, it is ensured that design stress, reduces the loss of stress, so as to ensure that the safety of structure；(3) due to using in post-cast strip
Bonded prestress girder tensioning end is set, is reduced covering anchorage operation, is more effectively protected anchorage；Reduce the closure of reserved opening
Operation, so as to the construction of subsequent handling.
Description of the drawings
Fig. 1 is method of the present invention flow chart；
Structural representations of the Fig. 2 for stretching end；
Fig. 3 is tensioning direction schematic diagram；
Fig. 4 is stretching process schematic diagram；
Fig. 5 is tension sequence schematic diagram.
Specific embodiment
Technical solution of the present invention is described in detail below by accompanying drawing.
Embodiment 1：Tension construction technology in large-span concrete Vierendeel girder bonded prestress post-cast strip as shown in Figure 1
Flow process：Beam bottom board installation and nonprestressed reinforcement colligation are propped up, presstressed reinforcing steel support is welded, corrugated tube is installed, reserved steam vent, filling
Slurry hole, installation fitting, in beam, presstressed reinforcing steel wears, nonprestressed reinforcement in colligation plate, hidden project inspection check and accept, pour concrete and
Maintenance, intensity reach 100%, and establishment tension sequence, tensioning equipment are demarcated, tension of prestressed tendon, and duct grouting, cut-out expose pre-
Stress rib simultaneously does protective treatment.
Concrete construction method is as follows：
(1) presstressed reinforcing steel lashing
After corrugated tube is in place, traction apparatuss is installed according to drawing requirement, is penetrated by beam.After steel wire bundle is opened, bunchy is from one
End penetrates corrugated tube and passes from the other end, and should not stab when wearing muscle corrugated tube, and the prestressing force of prestressed girder should be checked after lashing
Arrangement of reinforcement, must not misdraw；Two ends tensioned prestressing bar can penetrate corrugated tube from any one end, and ensure to penetrate the steel that rear two ends are exposed
Twisted wire equal length, it is ensured that stretching end working length is more than 1m；One-end tension presstressed reinforcing steel first package P anchor plates, spiral bar and
Penetrated from fixing end corrugated tube after constraint circle again, fixing end extruding anchor will be adjacent to P anchor plates；Wear corrugated tube after presstressed reinforcing steel
Fixed with iron wire colligation at each supporting-point, and spiral bar and anchor plate are installed in tensioning end position；Anchor plate must be fixed
To guarantee that tensioning end position is no longer moved, then carry out the closure of alter-pouring strips mould plate, for the closure of alter-pouring strips mould plate carry out it is higher
Requirement, blocked using foam concrete heat-preserving plate, then blocked using template bar, both ensured that spillage does not make concrete
It is closely knit, can guarantee that tensioning end surfaces are smooth in post-cast strip again, working places of the Fig. 2 for stretching end.
(2) concrete cast
After the completion of whole reinforcing bars lay, hidden inspection is carried out with designing unit by quality control division, supervisory board and received, confirm to close
After lattice, can casting concrete；Strengthen vibrating and ensureing closely knit during concreting, occur without honeycomb or hole；In concrete
Do not make the position of presstressed reinforcing steel, corrugated tube, spacer bar and backing plate change in process of vibrating, do not allow directly to be directed at ripple
Pipe is vibrated with anchor plate；
1. should check before casting concrete whether the position of corrugated tube and anchor plate is correct, and whether firmly joint, finds
Problem should be processed in time.
2. when concrete enters mould, corrugated tube should be avoided as far as possible from being impacted by excessive, in case corrugated tube is shifted and shriveled.
3. concrete should be layered and vibrate, and note vibration compacting, especially should more double note in the end of beam and the intensive place of reinforcing bar
Meaning.Concrete gravel particle diameter can suitably be reduced if necessary or take other rational measures to solve.
4. concrete vibrator definitely can not direct vibration corrugated tube, cause corrugated tube spillage so that vibrationproof is flat, affect tensioning
And duct grouting.
5. concrete test block is made in time, and the concrete test block for setting cured under same condition is stayed by job specfication requirement, with true
Determine the tensioning time.
6. should conserve in time after concreting, check and clear up duct. anchor plate and grout hole.
(3) tension of prestressed tendon anchoring
1. tensioning time：Concrete strength should carry out the tensioning of presstressed reinforcing steel up to after 100% and Jing after management confirms, specifically
The tensioning time is carried out by civil engineering schedule requirement；There is concrete cube intensity written pressure testing report during tensioning, it is pre- with beam
Stress rib adopts corresponding tonnage jack entire beam tension, limited to by execute-in-place space or other factors, and Jing designing institutees are agreed to,
Also can be using small-size jack by root tensioning.
2. tension sequence：Tension of prestressed tendon general sequence is sectional tensioned prestressing bar；To in Vierendeel girder during tensioning
Every section of prestressed frame beam is by the way of order tensioning from both sides to middle or symmetrical tensioning, the former head are carried out from centre to both sides
The mode of secondary beam after beam, the prestressing tendon in the same direction of pretensioning；
3. stretching process：Only with the form of construction work of one or both ends tensioning, with a jack in structure during tensioned at one end
Part one end carries out tensioning, and tensioning 2 jack in two ends are after the completion of component two ends carry out tensioning or first tensioning at one end simultaneously
The other end is arrived again mends drawing；Limited to by execute-in-place space or other factors, Jing designing institutees are agreed to, can also adopt small-size jack
By root tensioning, control stress for prestressing σ is designedcon=0.75fptk is 1395Mpa；
The stressing sequence of presstressed reinforcing steel is：
1) in beam, presstressed reinforcing steel is that straight line lays 0 → 10% ó con → 100% ó con anchorings；
2) in beam, presstressed reinforcing steel is that curve is laid and hole count is less than or equal to 9 holes
0 → 10% ó con → 60% ó con → 100% ó con are anchored；
3) in beam, presstressed reinforcing steel is that curve is laid and big 9 hole of hole count
0 → 10% ó con → 30% ó con → 60% ó con → 100% ó con are anchored；
4), when tension of prestressed tendon is to whole pulling force, preferably hold lotus 2min；
5) one end pretensioning, another end is adopted to mend tensioning during the tensioning of two ends；
6) dismountable big beam side before tensioning, to reduce impact of the template to crossbeam elastic compression.Beam bottom board and support are tight
Remove before prohibiting tensioning；
1. the stretching force per beam presstressed reinforcing steel is N=1.0 σcon·As；
2. elongation value of stretching should be from 0.1 σconWith 1.0 σcon, measure at twice and calculate, and make on-the-spot record；
3. during tensioning, oil pressure slow, steady should rise；
4. bonded prestressed tendon：Another side is stretched to from one side in order.Symmetrical tensioning is answered during tensioning, it is to avoid structure is not
Balanced deformation, refers to Fig. 3, Fig. 4, Fig. 5；
5. actual elongation value and calculated extension value deviation otherwise should should be suspended tensioning, find out original within+6%～-6%
Cause simultaneously can continue tensioning after taking measures；
If 6. there is fracture of wire, stripped thread (steel strand wires fracture, steel strand wires are slipped, anchor clamp loosens), tensioning should be suspended, found out
Tensioning can be continued after reason process.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, which must not be explained
It is to the restriction of itself of the invention.Under the premise of the spirit and scope of the present invention defined without departing from claims, can be right
Various changes can be made in the form and details for which.
Claims (4)
1. stretch-draw construction method in large-span concrete Vierendeel girder bonded prestress post-cast strip, it is characterised in that：Including strutbeam
Bed die is installed and nonprestressed reinforcement colligation, welding presstressed reinforcing steel support, corrugated tube installation, presstressed reinforcing steel wear, concealed work
Examination, casting concrete, tension of prestressed tendon, duct grouting, stretching end sealing off and covering anchorage；
Presstressed reinforcing steel wear including：Both ends or one end corrugated tube wears → and the colligation corrugated tube strong point → spiral is installed in stretching end
Muscle and anchor plate → alter-pouring strips mould plate closure, wherein post-cast strip is first blocked using foam concrete heat-preserving plate, then using mould
Lath is blocked；
Tension of prestressed tendon：
(1) tension sequence：General sequence is sectional tensioning, to every section of prestressed frame beam in Vierendeel girder using order tensioning
Mode carries out symmetrical tensioning, the mode of secondary beam after first girder, the same side of pretensioning from both sides to centre or from centre to both sides
To prestressing tendon；
(2) stretching process：Tensioned at one end carries out tensioning in component one end using a jack, and two ends tensioning is very heavy using 2
The other end is arrived again after the completion of component two ends are withstood on while carrying out tensioning or first tensioning at one end mends drawing；
(3) stressing sequence：
(31) in beam, presstressed reinforcing steel is laid for straight line：0 → 10% ó con → 100% ó con are anchored；
(32) in beam, presstressed reinforcing steel is that curve is laid and hole count is less than or equal to 9 holes：0 → 10% ó con → 60% ó con → 100% ó
Con is anchored；
(33) in beam, presstressed reinforcing steel is that curve is laid and big 9 hole of hole count：0 → 10% ó con → 30% ó con → 60% ó con →
100% ó con are anchored.
2. stretch-draw construction method in large-span concrete Vierendeel girder bonded prestress post-cast strip according to claim 1,
It is characterized in that：The two ends corrugated tube presstressed reinforcing steel wears process：After steel wire bundle is opened, bunchy is penetrated from any one end
Corrugated tube, it is ensured that penetrate the steel strand wires equal length for exposing at rear two ends, it is ensured that stretching end working length is more than 1m；One end corrugated tube
Presstressed reinforcing steel wears process：Penetrate from fixing end corrugated tube after being first arranged P anchor plates, spiral bar and constraint, fixing end extruding anchor
It is adjacent to P anchor plates.
3. stretch-draw construction method in large-span concrete Vierendeel girder bonded prestress post-cast strip according to claim 1,
It is characterized in that：Should check before the casting concrete whether the position of corrugated tube and anchor plate is correct, and whether joint is firm；
When concrete enters mould, corrugated tube should be avoided as far as possible from being impacted by excessive, in case corrugated tube is shifted and shriveled；Concrete should be layered
Vibrate, note vibration compacting；Concrete test block is made, and the concrete test block for setting cured under same condition is stayed by job specfication requirement,
To determine the tensioning time；Should conserve in time after concreting, check and clear up duct, anchor plate and grout hole.
4. stretch-draw construction method in large-span concrete Vierendeel girder bonded prestress post-cast strip according to claim 1,
It is characterized in that：Tension of prestressed tendon proof stress σcon=0.75fptk, i.e. 1395Mpa；When being stretched to whole pulling force, hold
Lotus 2min；Stretching force per beam presstressed reinforcing steel is N=1.0 σcon·As；Elongation value of stretching should be from 0.1 σconWith 1.0 σcon, it is divided to two
Secondary measurement calculates, and makees on-the-spot record；During tensioning, oil pressure slow, steady should rise；Actual elongation value and calculated extension value deviation
Otherwise should should suspend tensioning, ascertain the reason and tensioning can be continued after taking measures within+6%～-6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944762.6A CN106522561B (en) | 2016-11-02 | 2016-11-02 | Stretch-draw construction method in large-span concrete Vierendeel girder bonded prestress post-cast strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610944762.6A CN106522561B (en) | 2016-11-02 | 2016-11-02 | Stretch-draw construction method in large-span concrete Vierendeel girder bonded prestress post-cast strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106522561A true CN106522561A (en) | 2017-03-22 |
| CN106522561B CN106522561B (en) | 2018-12-14 |
Family
ID=58292846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610944762.6A Active CN106522561B (en) | 2016-11-02 | 2016-11-02 | Stretch-draw construction method in large-span concrete Vierendeel girder bonded prestress post-cast strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106522561B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299711A (en) * | 2017-08-08 | 2017-10-27 | 浙江华展工程研究设计院有限公司 | The late poured band structure of prestressed concrete panel |
| CN107869147A (en) * | 2017-11-21 | 2018-04-03 | 中建八局第三建设有限公司 | Super-length prestressed raft board construction method |
| CN108360821A (en) * | 2018-02-07 | 2018-08-03 | 上海建工二建集团有限公司 | A kind of construction method of beam |
| CN109653511A (en) * | 2019-01-18 | 2019-04-19 | 中如建工集团有限公司 | Large-span bidirectional mixing prestressing force complete construction method |
| CN110374012A (en) * | 2019-07-24 | 2019-10-25 | 中铁七局集团路桥工程有限公司 | A kind of prefabricated engineering method of T beam original position Support Method |
| CN110630030A (en) * | 2019-09-17 | 2019-12-31 | 湖南大学 | P-UHPC reinforcing device for reinforced concrete structure and construction method thereof |
| CN111375995A (en) * | 2020-03-25 | 2020-07-07 | 盐城市人利和商贸有限公司 | High-efficiency high-precision machining process for prestressed tension plate |
| CN112031243A (en) * | 2020-09-02 | 2020-12-04 | 中建一局华江建设有限公司 | Arc-shaped roof prestressed reinforcement laying system and construction method thereof |
| CN112282376A (en) * | 2020-10-20 | 2021-01-29 | 中国建筑第八工程局有限公司 | Ground pipe penetrating system for steel strand in large-span steel truss and pipe penetrating construction method |
| CN112324140A (en) * | 2020-11-09 | 2021-02-05 | 深圳市罗湖建筑安装工程有限公司 | Prestressed concrete slab construction method |
| CN112647706A (en) * | 2020-07-28 | 2021-04-13 | 安宜建设集团有限公司 | Construction method for long-span concrete beam slow-bonding prestress |
| CN113605534A (en) * | 2021-08-12 | 2021-11-05 | 中建八局发展建设有限公司 | Large-space-span post-tensioned prestressed beam construction method |
| CN114438886A (en) * | 2021-12-28 | 2022-05-06 | 中铁二十局集团有限公司 | Continuous beam tensioning method |
| CN114753644A (en) * | 2021-09-28 | 2022-07-15 | 河南省工建集团有限责任公司 | Tensioning device for tensioning construction after bonding of large-span prestressed beam and construction method |
| CN114961273A (en) * | 2022-05-14 | 2022-08-30 | 中国水利水电第七工程局有限公司 | Prestressed steering tensioning construction method in narrow space |
| CN115306080A (en) * | 2022-09-20 | 2022-11-08 | 中建八局发展建设有限公司 | Construction method for large-span beam double-sided bonded prestressed tendons |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519814A (en) * | 2020-05-15 | 2020-08-11 | 南通大学 | Large-span double-slope roof prestressed reinforcement bundle straining beam construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775903A (en) * | 2010-01-22 | 2010-07-14 | 北京首钢建设集团有限公司 | Construction method for pouring after settlement of reinforced concrete continuous beam with cohesive pre-stress |
| CN102535861A (en) * | 2011-12-29 | 2012-07-04 | 中国一冶集团有限公司 | Tensioning method for bonded and unbonded combination prestress concrete beams at post-cast strip |
| CN103132456A (en) * | 2013-03-19 | 2013-06-05 | 成军 | Construction method for large span girder with cementation pre-stress |
| CN103938871A (en) * | 2014-03-27 | 2014-07-23 | 湖南顺天建设集团有限公司 | Method for constructing concrete-filled steel tube column and bonded prestressed frame beam structure adopting reinforced concrete ring beam joints |
| CN104314103A (en) * | 2014-05-26 | 2015-01-28 | 江苏开来预应力工程有限公司 | Method for designing and constructing waterproof plate for underground garage by post-tensioning bonded prestressed construction process |
-
2016
- 2016-11-02 CN CN201610944762.6A patent/CN106522561B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775903A (en) * | 2010-01-22 | 2010-07-14 | 北京首钢建设集团有限公司 | Construction method for pouring after settlement of reinforced concrete continuous beam with cohesive pre-stress |
| CN102535861A (en) * | 2011-12-29 | 2012-07-04 | 中国一冶集团有限公司 | Tensioning method for bonded and unbonded combination prestress concrete beams at post-cast strip |
| CN103132456A (en) * | 2013-03-19 | 2013-06-05 | 成军 | Construction method for large span girder with cementation pre-stress |
| CN103938871A (en) * | 2014-03-27 | 2014-07-23 | 湖南顺天建设集团有限公司 | Method for constructing concrete-filled steel tube column and bonded prestressed frame beam structure adopting reinforced concrete ring beam joints |
| CN104314103A (en) * | 2014-05-26 | 2015-01-28 | 江苏开来预应力工程有限公司 | Method for designing and constructing waterproof plate for underground garage by post-tensioning bonded prestressed construction process |
Non-Patent Citations (2)
| Title |
|---|
| 李嘉年、 李江、 郭晓兰: "广州国际会议展览中心大规模预应力结构优化设计", 《广州建筑》 * |
| 王波兰、王云: "超高大跨度大截面后张法有粘结预应力梁施工技术", 《浙江建筑》 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299711A (en) * | 2017-08-08 | 2017-10-27 | 浙江华展工程研究设计院有限公司 | The late poured band structure of prestressed concrete panel |
| CN107869147A (en) * | 2017-11-21 | 2018-04-03 | 中建八局第三建设有限公司 | Super-length prestressed raft board construction method |
| CN107869147B (en) * | 2017-11-21 | 2020-07-03 | 中建八局第三建设有限公司 | Construction method of overlength prestressed raft |
| CN108360821A (en) * | 2018-02-07 | 2018-08-03 | 上海建工二建集团有限公司 | A kind of construction method of beam |
| CN109653511A (en) * | 2019-01-18 | 2019-04-19 | 中如建工集团有限公司 | Large-span bidirectional mixing prestressing force complete construction method |
| CN110374012A (en) * | 2019-07-24 | 2019-10-25 | 中铁七局集团路桥工程有限公司 | A kind of prefabricated engineering method of T beam original position Support Method |
| CN110630030A (en) * | 2019-09-17 | 2019-12-31 | 湖南大学 | P-UHPC reinforcing device for reinforced concrete structure and construction method thereof |
| CN111375995B (en) * | 2020-03-25 | 2020-09-15 | 盐城市人利和商贸有限公司 | High-efficiency high-precision machining process for prestressed tension plate |
| CN111375995A (en) * | 2020-03-25 | 2020-07-07 | 盐城市人利和商贸有限公司 | High-efficiency high-precision machining process for prestressed tension plate |
| CN112647706A (en) * | 2020-07-28 | 2021-04-13 | 安宜建设集团有限公司 | Construction method for long-span concrete beam slow-bonding prestress |
| CN112031243A (en) * | 2020-09-02 | 2020-12-04 | 中建一局华江建设有限公司 | Arc-shaped roof prestressed reinforcement laying system and construction method thereof |
| CN112282376A (en) * | 2020-10-20 | 2021-01-29 | 中国建筑第八工程局有限公司 | Ground pipe penetrating system for steel strand in large-span steel truss and pipe penetrating construction method |
| CN112324140A (en) * | 2020-11-09 | 2021-02-05 | 深圳市罗湖建筑安装工程有限公司 | Prestressed concrete slab construction method |
| CN113605534A (en) * | 2021-08-12 | 2021-11-05 | 中建八局发展建设有限公司 | Large-space-span post-tensioned prestressed beam construction method |
| CN114753644A (en) * | 2021-09-28 | 2022-07-15 | 河南省工建集团有限责任公司 | Tensioning device for tensioning construction after bonding of large-span prestressed beam and construction method |
| CN114753644B (en) * | 2021-09-28 | 2024-03-19 | 河南省工建集团有限责任公司 | Tensioning device for tensioning construction of large-span prestressed beam after bonding and construction method |
| CN114438886A (en) * | 2021-12-28 | 2022-05-06 | 中铁二十局集团有限公司 | Continuous beam tensioning method |
| CN114961273A (en) * | 2022-05-14 | 2022-08-30 | 中国水利水电第七工程局有限公司 | Prestressed steering tensioning construction method in narrow space |
| CN115306080A (en) * | 2022-09-20 | 2022-11-08 | 中建八局发展建设有限公司 | Construction method for large-span beam double-sided bonded prestressed tendons |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106522561B (en) | 2018-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106522561A (en) | Long-span concrete frame beam bonded prestressed post-cast strip inside stretching construction method | |
| CN107119574B (en) | A kind of Cantilever Construction Method of arch rib bridge girder | |
| CN104790302B (en) | A kind of high pier continuous rigid frame bridge end bay straightway Hanging Basket coordinates bent cap support integral construction method | |
| CN110847044B (en) | Semi-prefabricated assembled bent cap construction method | |
| CN109676784A (en) | A kind of assembled steel-concrete combined structure pedestal and pre-tensioning system T beam construction | |
| CN103410329B (en) | Large-span basement concrete roof structure flat tube bonded prestressing force construction method | |
| CN108505448A (en) | Pier cap beam anchor ear girder steel template system and its construction method | |
| CN112982181A (en) | Construction method for steel-concrete combined section of through-type steel box continuous arch bridge | |
| CN208668279U (en) | Pier cap beam anchor ear girder steel template system | |
| CN113738119A (en) | Large-span prestressed concrete beam roof tooth block tensioning construction method with bonding | |
| CN113605771A (en) | Prestress assembly type frame structure system | |
| CN109653511A (en) | Large-span bidirectional mixing prestressing force complete construction method | |
| CN103938871B (en) | A kind of construction method adopting the steel core concrete column bonded prestress frame beam structure of reinforced concrete ring beam joint | |
| CN110468714B (en) | Longitudinal and transverse closure construction method of ultra-long-connection unequal-span asymmetric continuous bridge | |
| CN110184948A (en) | A kind of Bridge beam construction method | |
| CN107984610A (en) | A kind of prestressing force small box girder production method | |
| CN207812307U (en) | The construction system of Cable stayed Bridge Main Tower and steel anchor beam | |
| CN113494055A (en) | Double-locking structure for closure section of long-span bridge and construction method | |
| CN108360821A (en) | A kind of construction method of beam | |
| CN108316150A (en) | The construction system and construction method of Cable stayed Bridge Main Tower and steel anchor beam | |
| CN113202010A (en) | Prestressed concrete cast-in-place box girder structure and construction method thereof | |
| CN101550724A (en) | Construction method of large-span post-tensioned prestressed longitudinal and transverse frame beams | |
| CN106284103A (en) | Steel reinforced concrete combination beam roof steel bar concrete high-altitude cantilever pouring construction method | |
| CN106437763A (en) | Inverted arch steel end die and construction method thereof | |
| CN107724252B (en) | A kind of continuous box girder hanging basket cantilever method construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |