CN102936957A - Construction method for optimizing arrangement of steel bars in structural steel concrete structure - Google Patents
Construction method for optimizing arrangement of steel bars in structural steel concrete structure Download PDFInfo
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Abstract
A construction method for optimizing arrangement of steel bars in a structural steel concrete structure comprises the steps of secondary design, connection of column longitudinal steel bars and beam longitudinal steel bars, construction of column hooping and additional bars, and construction of beam hooping and tie bars. By means of the construction method, only a hoisting device is needed to hoist a main beam, application cost of construction devices is reduced, obstacle on a working surface caused by stretching and drawing prestress steel bundles on sites can be avoided, and quality control of the beam body and safe and civilized construction management can be facilitated. The structural steel concrete structure constructed by using the construction method has the advantages of being large in rigidness, small in deformation, few in expansion joint and the like. The cost of the optimally-arranged steel bars is saved by 15%, the bearing capacity can be improved by 20-30%, the construction period is shortened, and the construction cost is reduced. In addition, the construction method is economical, practical and convenient to operate.
Description
Technical field
The present invention relates to relate to International Classification of Patents E04C constructional materials or structural element construction technology, optimize the job practices of reinforcement placement in especially a kind of strength steel-concrete structure.
Background technology
In the known technology, the strength steel concrete claims again steel reinforced concrete or strengthening concrete, it is a kind of novel combined building structure that is formed by the steel frame reinforced concrete enveloped, because mutually retraining between configuration steel frame and the high-strength concrete makes Structural Steel Reinforced Concrete can more effectively bring into play steel and concrete bi-material advantage separately, overcome simultaneously the shortcoming that cripling easily occurs steel work, increase the ductility of structure and member, improved the fragility characteristic that is unfavorable for antidetonation of bringing owing to the ductility of high-strength concrete own is poor; In addition, with respect to reinforced concrete structure, adopt Structural Steel Reinforced Concrete effectively to reduce the sectional dimension of member, increased usage space; With respect to steel work, adopt Structural Steel Reinforced Concrete to save rolled steel dosage, reduced cost, improved fire prevention and antiseptic property.In recent years, the strength steel concrete is applied in the building structure more and more, especially in the structure of civil air defense basement of high building structure and large scale industry civilian construction, along with the increase of depth of building and the requirement of airraid shelter's design and functional performance improve constantly, the strength steel concrete is promoted the use of in the middle of the engineering structures widely as a kind of efficient structure-bearing system.
The placement technique content of relevant strength steel-concrete structure technology even reinforcing bar is less in published Patents document, Chinese patent application 201110069136 discloses a kind of method for arranging of large-scale metallurgical industrial premises steel reinforced concrete reinforcing bar, install first reinforced concrete column and by install to adjust backing plate and cable wind rope adjust qualified after, between two adjacent reinforced concrete columns, steel frame beam is installed again, and after preliminary fixing, the solid welding of full penetration forms steel frame to reinforced concrete column again; Then by the concrete reinforcement of arranging first on the reinforced concrete column, concrete reinforcement on the rear layout steel frame beam, last order of arranging again the concrete reinforcement of reinforced concrete column and steel frame beam junction, arrange the concrete reinforcement in the steel frame outside, when arranging the concrete reinforcement of each position, arrange first peg, rear layout vertical applied force reinforcing bar is arranged prefabricated horizontal fixedly stirrup at last.Chinese patent application 201110281013 relates to a kind of improved method for installing reinforcement cage in beam column joint zone of reinforced concrete frame structure, directly over the beam form board slot, set up support, the longitudinal reinforcement of beam interts and is placed on the support in the vertical muscle of post, and nuclear core district column tie-bar is placed on the vertical muscle position of post, beam up and down between the vertical muscle; The longitudinal reinforcement of beam is by fixing with the stirrup colligation of beam, and column tie-bar is by fixing with the spacing tringle colligation of stirrup, forms not interim beam, the post node area cage of reinforcement of placing directly over beam form board slot and post, girder connection district with the vertical muscle colligation of post; At last beam reinforcement cages is glided along the vertical muscle of post with column tie-bar cage integral body and fall in beam form board slot and beam, the post node nuclear core district final position of realizing beam, post node area cage of reinforcement.
But, although strength steel-concrete structure system simple, stressed clear and definite, form of structure is various and given full play to the advantage of hard and soft bi-material, but the linking of design and construction in conjunction with aspect be still waiting further raising, especially the layout of reinforcing bar and passing through, actual difficulty is large in the construction at the scene, layout to reinforcing bar is optimized, and also has no preferably technical improvement method.
Summary of the invention
The purpose of this invention is to provide the job practices of optimizing reinforcement placement in a kind of strength steel-concrete structure, can guarantee again handled easily of beam, post Nodes cage of reinforcement installation quality to realizing.
Goal of the invention of the present invention realizes by following technical measures: operation comprises, the connection of Secondary Design, post, beam longitudinal reinforcement, column tie-bar and the construction of additional muscle and the construction of beam stirrup and tension rib; The construction concrete steps comprise:
1) Secondary Design: to the position Secondary Design permutatation hole pattern of core space, increase requirement and take the pore-forming perforation of steel structure processing factory or welding to reserve sleeve at the intensive place of column beam joint host node reinforcing bar.Its reason is, concentrates at column beam joint host node reinforcing bar and intersects closelyer, and this place also exists and comprises that post master muscle crosses section steel beam sleeve, reinforcing bar junction plate preformed hole, column tie-bar and cross section steel beam hole and beam steel and cross steel column sleeve etc. and all meet at together.
2) connection of post, beam longitudinal reinforcement: during post longitudinal stress muscle connects, the post Reinforcement mainly adopts mechanical connection or straight screw sleeve to connect, when the longitudinal stress muscle passes the strength beam-column node wing along plate, take factory process to become slotted eye to pass through, when the longitudinal stress muscle passed beam column panel point or cast steel node, Reinforcement and structure baffle plate taked two-sided overlap joint to be welded to connect; During beam longitudinal stress muscle connects, beam longitudinal reinforcement two ends are connected with reservation sleeve on the steel rectangle column, reserving sleeve has been welded on the steel column when steel column dispatches from the factory, when the stiffness beam column main rib is in the middle part of beam, adopt the long filament sleeve to connect, namely main muscle one terminal filament button processing length just equals the length of a sleeve at the middle part, first sleeve all is screwed into, and after another root master muscle that is attached thereto puts in place sleeve backwards is screwed into.
3) construction of column tie-bar and additional muscle: be divided into two sections processing, then wrap up from the outside respectively, take single face overlap joint 10d to weld in the post side, additional bar adopts the colligation overlap joint.
4) construction of beam stirrup and tension rib: the outside stirrup of composite beam is divided into two sections, rides over from the above and below on the main muscle of beam, takes single face overlap joint 10d to weld at the pars intermedia position of deck-molding.
The invention has the beneficial effects as follows: only need hanging device lifting girder, reduced the construction equipment application cost, can avoid again the obstacle on the on-the-spot stretch-draw prestressing force steel Shu Zaocheng work plane, be convenient to the control of beam weight and safety construction management; The strength steel-concrete structure of this kind method construction construction has that rigidity is large, distortion is little and the advantage such as the shrinkage joint is few, and the layout reinforcing bar through optimizing is saved cost 15%, and bearing capacity can improve 20%-30%, the reduction of erection time, and reducing construction cost, economic and practical, easy and simple to handle.
Description of drawings
Fig. 1 is operation schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1, job practices operation of the present invention comprises, the connection of Secondary Design, post, beam longitudinal reinforcement, column tie-bar and the construction of additional muscle and the construction of beam stirrup and tension rib; The construction concrete steps comprise:
1) Secondary Design: to the position Secondary Design permutatation hole pattern of core space, increase requirement and take the pore-forming perforation of steel structure processing factory or welding to reserve sleeve at the intensive place of column beam joint host node reinforcing bar.Its reason is, concentrates at column beam joint host node reinforcing bar and intersects closelyer, and this place also exists and comprises that post master muscle crosses section steel beam sleeve, reinforcing bar junction plate preformed hole, column tie-bar and cross section steel beam hole and beam steel and cross steel column sleeve etc. and all meet at together.
2) connection of post, beam longitudinal reinforcement: during post longitudinal stress muscle connects, the post Reinforcement mainly adopts mechanical connection or straight screw sleeve to connect, when the longitudinal stress muscle passes the strength beam-column node wing along plate, take factory process to become slotted eye to pass through, when the longitudinal stress muscle passed beam column panel point or cast steel node, Reinforcement and structure baffle plate taked two-sided overlap joint to be welded to connect; During beam longitudinal stress muscle connects, beam longitudinal reinforcement two ends are connected with reservation sleeve on the steel rectangle column, reserving sleeve has been welded on the steel column when steel column dispatches from the factory, when the stiffness beam column main rib is in the middle part of beam, adopt the long filament sleeve to connect, namely main muscle one terminal filament button processing length just equals the length of a sleeve at the middle part, first sleeve all is screwed into, and after another root master muscle that is attached thereto puts in place sleeve backwards is screwed into.
3) construction of column tie-bar and additional muscle: be divided into two sections processing, then wrap up from the outside respectively, take single face overlap joint 10d to weld in the post side, additional bar adopts the colligation overlap joint.
4) construction of beam stirrup and tension rib: the outside stirrup of composite beam is divided into two sections, from
Ride the above and belowOn the main muscle of beam,
Deck-moldingThe pars intermedia position take single face overlap joint
10dWeld.
In aforementioned, way takes colligation or single-selded lap joint to connect routinely when the stiffness beam column main rib is in the middle part of beam, but by existing standards of acceptance requirement, diameter must adopt mechanical connection greater than the reinforcing bar of 18mm, if will not meet this code requirement by existing conventional way.
In aforementioned, long filament sleeve place has one section main muscle to be processed into screw thread, and muff joint detects need to long filament, and long filament sleeve junction intensity must meet the requirements.
In aforementioned, the colligation of column tie-bar and the colligation of existing steel concrete column tie-bar can not be taked same procedure.
In aforementioned, in the construction of existing beam stirrup and tension rib, inner tension rib is welded on the web on the steel frame beam, so just increased the welding capacity of reinforcing bar, and every stirrup has two plumb joints.
Embodiment 1: a kind of strength steel-concrete structure reinforcement placement Optimizing construction operation comprises: preparation of construction, Secondary Design, reinforcement detailing and processing are connected that post beam longitudinal reinforcement connects, column tie-bar and additional muscle construction, beam stirrup and tension rib construction.
In the present embodiment, for obtaining preferably the effect of implementing, except the construction of the construction of the connection of taking aforementioned Secondary Design, post, beam longitudinal reinforcement, column tie-bar and additional muscle and beam stirrup and tension rib, also need:
1) finish preparation of construction before the Secondary Design: utilize the similar engineering construction experience, at first analytical structure system reinforcing bar is laid the artificial consumption reduction of difficult point, impact of construction and the principal element of construction speed, determines the control countermeasure of all kinds of influence factors; Next sets up threedimensional model, under designer's approval, tests, proves; Nodal analysis method through optimizing is numbered, and is convenient to reinforcing bar and adds the Unified number in man-hour.
2) reinforcement detailing and processing; The type of attachment of passing through by node full-page proof model clear and definite node master muscle, stirrup and lacing wire, carry out classifying and numbering, process respectively by different connection form, different connected node, when strength reinforced concrete beam master muscle adopted straight screw sleeve and combination welding to connect, after the steel rectangle column installation, the length of stiffness beam main tendon was just fixing, otherwise, long then can't be connected with sleeve, the short length that then stretches in the sleeve is inadequate, and is influential to structure stress; Simultaneously requirement, main muscle joint rate should be greater than 50% in the same cross section.
Among the present invention, pass through colligation for strength Reinforced Concrete Structure beam-column node, stirrup and lacing wire, by the CAD Computer Aided Design, set up the threedimensional model of representative node, simulate the site operation of reinforcing bar, with enforcement the core space reinforcement placement is arranged and carry out Secondary Design.
In the embodiment of the invention, the prestressed strand of simply supported beam carries out stretch-draw in factory, and the prestressed strand of hogging moment area is arranged and stretch-draw is all carried out at girder, precast beam adopts standardized structural element, carry out batch production and unify production and administration, only need hanging device lifting girder, reduced the construction equipment application cost, the obstacle on the on-the-spot stretch-draw prestressing force steel Shu Zaocheng work plane be can avoid again, the control of beam weight and safety construction management are convenient to; The strength steel-concrete structure of this kind method construction construction has that rigidity is large, distortion is little and the advantage such as the shrinkage joint is few, has saved the engineering time, the reduction of erection time, increases economic efficiency; Economic and practical, easy and simple to handle, and can save construction funds, reducing construction cost.
Embodiment 2: the job practices concrete steps of optimizing reinforcement placement in the strength steel-concrete structure comprise:
1) first step:
A, utilize the similar engineering construction experience, at first analytical structure system reinforcing bar is laid the artificial consumption reduction of difficult point, impact of construction and the principal element of construction speed, determines the control countermeasure of all kinds of influence factors;
B, secondly set up threedimensional model, under designer's approval, test, prove;
C, the nodal analysis method through optimizing are numbered, and are convenient to reinforcing bar and add the Unified number in man-hour;
2) second step:
D, to the position Secondary Design permutatation hole pattern of core space, increase and require to take the pore-forming perforation of steel structure processing factory or welding to reserve sleeve at the intensive place of column beam joint host node reinforcing bar.
3) the 3rd step:
E, by the type of attachment of passing through of the clear and definite node master muscle of node full-page proof model, stirrup, lacing wire, carry out classifying and numbering, process respectively with different connected nodes by different connection form.
4) the 4th step:
F, the excessive beam-column node of the post Reinforcement wing take factory process to become slotted eye to pass through during along plate, and when crossing beam column panel point or cast steel node, Reinforcement and structure baffle plate take two-sided overlap joint to be welded to connect;
G, beam longitudinal reinforcement two ends are connected with reservation sleeve on the steel rectangle column, reserve sleeve and have been welded on when steel column dispatches from the factory on the steel column, and beam main tendon adopts the long filament sleeve to connect when the middle part, and long filament sleeve junction intensity must meet the requirements;
5) the 5th step:
H, colligation post beam stirrup, additional bar and tension rib;
In the embodiment of the invention, the layout reinforcing bar through optimizing is saved cost about 15%, reduces the space hold height; Improved the Antiseismic building performance; But compare saving steel 20%-40% with steel work, compare bearing capacity with reinforced concrete structure and can improve 20%-30%, improve programming, guarantee workmanship.
Claims (4)
1. optimize the job practices of reinforcement placement in the strength steel-concrete structure, it is characterized in that: operation comprises, the connection of Secondary Design, post, beam longitudinal reinforcement, column tie-bar and the construction of additional muscle and the construction of beam stirrup and tension rib; The construction concrete steps comprise:
(1) Secondary Design: to the position Secondary Design permutatation hole pattern of core space, increase requirement and take the pore-forming perforation of steel structure processing factory or welding to reserve sleeve at the intensive place of column beam joint host node reinforcing bar.Its reason is, concentrates at column beam joint host node reinforcing bar and intersects closelyer, and this place also exists and comprises that post master muscle crosses section steel beam sleeve, reinforcing bar junction plate preformed hole, column tie-bar and cross section steel beam hole and beam steel and cross steel column sleeve etc. and all meet at together;
(2) connection of post, beam longitudinal reinforcement: during post longitudinal stress muscle connects, the post Reinforcement mainly adopts mechanical connection or straight screw sleeve to connect, when the longitudinal stress muscle passes the strength beam-column node wing along plate, take factory process to become slotted eye to pass through, when the longitudinal stress muscle passed beam column panel point or cast steel node, Reinforcement and structure baffle plate taked two-sided overlap joint to be welded to connect; During beam longitudinal stress muscle connects, beam longitudinal reinforcement two ends are connected with reservation sleeve on the steel rectangle column, reserving sleeve has been welded on the steel column when steel column dispatches from the factory, when the stiffness beam column main rib is in the middle part of beam, adopt the long filament sleeve to connect, namely main muscle one terminal filament button processing length just equals the length of a sleeve at the middle part, first sleeve all is screwed into, and after another root master muscle that is attached thereto puts in place sleeve backwards is screwed into;
(3) construction of column tie-bar and additional muscle: be divided into two sections processing, then wrap up from the outside respectively, take single face overlap joint 10d to weld in the post side, additional bar adopts the colligation overlap joint;
(4) construction of beam stirrup and tension rib: the outside stirrup of composite beam is divided into two sections, from
Ride the above and belowOn the main muscle of beam,
Deck-moldingThe pars intermedia position take single face overlap joint
10dWeld.
2. optimize the job practices of reinforcement placement in a kind of strength steel-concrete structure as claimed in claim 1, it is characterized in that, except the construction of the construction of the connection of taking aforementioned Secondary Design, post, beam longitudinal reinforcement, column tie-bar and additional muscle and beam stirrup and tension rib, also need:
(1) finish preparation of construction before the Secondary Design: utilize the similar engineering construction experience, at first analytical structure system reinforcing bar is laid the artificial consumption reduction of difficult point, impact of construction and the principal element of construction speed, determines the control countermeasure of all kinds of influence factors; Next sets up threedimensional model, under designer's approval, tests, proves; Nodal analysis method through optimizing is numbered, and is convenient to reinforcing bar and adds the Unified number in man-hour;
(2) reinforcement detailing and processing; The type of attachment of passing through by node full-page proof model clear and definite node master muscle, stirrup and lacing wire, carry out classifying and numbering, process respectively by different connection form, different connected node, when strength reinforced concrete beam master muscle adopted straight screw sleeve and combination welding to connect, after the steel rectangle column installation, the length of stiffness beam main tendon was just fixing, otherwise, long then can't be connected with sleeve, the short length that then stretches in the sleeve is inadequate, and is influential to structure stress; Simultaneously requirement, main muscle joint rate should be greater than 50% in the same cross section.
3. optimize the job practices of reinforcement placement in a kind of strength steel-concrete structure as claimed in claim 1, it is characterized in that, pass through colligation for strength Reinforced Concrete Structure beam-column node, stirrup and lacing wire, by the CAD Computer Aided Design, set up the threedimensional model of representative node, simulate the site operation of reinforcing bar, with enforcement the core space reinforcement placement is arranged and carry out Secondary Design.
4. optimize the job practices of reinforcement placement in a kind of strength steel-concrete structure as claimed in claim 1, it is characterized in that, concrete steps comprise:
(1) first step:
A, utilize the similar engineering construction experience, at first analytical structure system reinforcing bar is laid the artificial consumption reduction of difficult point, impact of construction and the principal element of construction speed, determines the control countermeasure of all kinds of influence factors;
B, secondly set up threedimensional model, under designer's approval, test, prove;
C, the nodal analysis method through optimizing are numbered, and are convenient to reinforcing bar and add the Unified number in man-hour;
(2) second step:
D, to the position Secondary Design permutatation hole pattern of core space, increase and require to take the pore-forming perforation of steel structure processing factory or welding to reserve sleeve at the intensive place of column beam joint host node reinforcing bar.
(3) the 3rd steps:
E, by the type of attachment of passing through of the clear and definite node master muscle of node full-page proof model, stirrup, lacing wire, carry out classifying and numbering, process respectively with different connected nodes by different connection form.
(4) the 4th steps:
F, the excessive beam-column node of the post Reinforcement wing take factory process to become slotted eye to pass through during along plate, and when crossing beam column panel point or cast steel node, Reinforcement and structure baffle plate take two-sided overlap joint to be welded to connect;
G, beam longitudinal reinforcement two ends are connected with reservation sleeve on the steel rectangle column, reserve sleeve and have been welded on when steel column dispatches from the factory on the steel column, and beam main tendon adopts the long filament sleeve to connect when the middle part, and long filament sleeve junction intensity must meet the requirements;
(5) the 5th steps:
H, colligation post beam stirrup, additional bar and tension rib.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631705A (en) * | 2015-02-12 | 2015-05-20 | 广西壮族自治区冶金建设公司 | Integral type beam-column node area column hoop and constructing method thereof |
| CN104712100A (en) * | 2015-02-12 | 2015-06-17 | 中国中元国际工程有限公司 | Construction method for antimagnetic stainless steel bars in antimagnetic area of transformer room |
| CN105735490A (en) * | 2014-12-08 | 2016-07-06 | 永升建设集团有限公司 | Construction method for beam column joint core area rigid steel structure |
| CN106441689A (en) * | 2016-07-13 | 2017-02-22 | 上海建工集团股份有限公司 | Real-time automatic monitor system for wireless torque wrench |
| CN109446566A (en) * | 2018-09-25 | 2019-03-08 | 重庆大学产业技术研究院 | Reinforcing bar intelligent barrier avoiding arrangement method at a kind of node based on intensified learning |
| CN110005075A (en) * | 2019-04-03 | 2019-07-12 | 江苏中原建设集团有限公司 | A kind of construction method of strengthening concrete bean column node |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735490A (en) * | 2014-12-08 | 2016-07-06 | 永升建设集团有限公司 | Construction method for beam column joint core area rigid steel structure |
| CN104631705A (en) * | 2015-02-12 | 2015-05-20 | 广西壮族自治区冶金建设公司 | Integral type beam-column node area column hoop and constructing method thereof |
| CN104712100A (en) * | 2015-02-12 | 2015-06-17 | 中国中元国际工程有限公司 | Construction method for antimagnetic stainless steel bars in antimagnetic area of transformer room |
| CN106441689A (en) * | 2016-07-13 | 2017-02-22 | 上海建工集团股份有限公司 | Real-time automatic monitor system for wireless torque wrench |
| CN109446566A (en) * | 2018-09-25 | 2019-03-08 | 重庆大学产业技术研究院 | Reinforcing bar intelligent barrier avoiding arrangement method at a kind of node based on intensified learning |
| CN109446566B (en) * | 2018-09-25 | 2023-06-20 | 重庆大学产业技术研究院 | Reinforced learning-based intelligent obstacle avoidance arrangement method for reinforcing steel bars at nodes |
| CN110005075A (en) * | 2019-04-03 | 2019-07-12 | 江苏中原建设集团有限公司 | A kind of construction method of strengthening concrete bean column node |
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Application publication date: 20130220 |