CN103806660B - Structural Steel Reinforced Concrete beam-column joint construction method - Google Patents

Structural Steel Reinforced Concrete beam-column joint construction method Download PDF

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CN103806660B
CN103806660B CN201410020683.7A CN201410020683A CN103806660B CN 103806660 B CN103806660 B CN 103806660B CN 201410020683 A CN201410020683 A CN 201410020683A CN 103806660 B CN103806660 B CN 103806660B
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steel column
column
steel
welding
longitudinal reinforcement
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CN201410020683.7A
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CN103806660A (en
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田玉新
王双喜
柳云波
符正岳
刘博涛
刘恒毅
李辉林
刘彬
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永升建设集团有限公司
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Abstract

Structural Steel Reinforced Concrete beam-column joint construction method, construction method comprises: preparation of construction, Components installation, colligation beam column reinforcing bar and formwork concreting; Wherein, preparation of construction comprises: the welding of straight screw sleeve (4) welding, the through preformed hole of beam main tendon (5) and sash plate (7) on steel column; Components installation comprises: the lifting of embedding anchor bolts, steel column, measurement update, steel column welding and seam inspection inspection; Colligation beam column reinforcing bar comprises: 1. longitudinal reinforcement (1) and straight screw sleeve (4) are mechanically connected; 2. longitudinal reinforcement (1) is through the upper preformed hole (5) of steel column web (2); 3. longitudinal reinforcement (1) is welded to connect with stiffener (7) on steel column; 4. longitudinal reinforcement (1) is walked around steel column and is directly passed through; 5. longitudinal reinforcement (1) directly anchoring and bean column node region.Position of joints structural integrity is good, and workmanship and nodes domains supporting capacity promote.

Description

Structural Steel Reinforced Concrete beam-column joint construction method

Technical field

The present invention relates to International Classification of Patents E04B building construction construction technology, especially Structural Steel Reinforced Concrete beam-column joint construction method.

Background technology

Along with the increase of depth of building and the requirement of air raid shelter's design and functional performance improve constantly, as the efficient structure-bearing system of one, strengthening concrete is applied in building structure more and more, in the structure of civil air defense basement of especially high building structure and large scale industry civilian construction.

Strengthening concrete combining structure is also known as steel reinforced concrete or strength steel concrete combining structure, it is a kind of new composite structure formed by steel frame reinforced concrete enveloped, Structural Steel Reinforced Concrete is enable more effectively to play shaped steel and concrete bi-material advantage separately owing to mutually retraining between configuration steel frame and high-strength concrete, overcome the shortcoming that cripling easily occurs steel work, add the ductility of structure and component, improve the fragility characteristic being unfavorable for antidetonation brought due to the ductility difference of high-strength concrete own; In addition, relative to reinforced concrete structure, adopt Structural Steel Reinforced Concrete to efficiently reduce the sectional dimension of component, increase usage space, can beam cross-section be reduced, regulating shaft pressure ratio, improve the bearing capacity of structure; Relative to steel work, adopt Structural Steel Reinforced Concrete to save rolled steel dosage, reduce cost, improve fire prevention and antiseptic property.

Published Patents document comprises: patent application 201110183220 steel reinforced concrete structure bean column node construction, solve the complicated reinforcing bar of section steel beam and steel column connected node territory to arrange and colligation problem with corresponding shaped steel, avoid perforate on shaped steel wing plate, by at X, Y beam level indulges muscle and steel column in horizontal cross position, vertical strip hole is opened with on the web of steel column, realize X, the up-down adjustment of Y beam horizontal bar and bending, and on control type steel column web perforated area exceed web plate section long-pending 20%, reduce because perforate is to the negative effect of steel column web intensity to greatest extent, and at the main muscle of post, post stiffener and column tie-bar three spatial intersecting position, with the upper surface of post stiffener for reference line regular intervals arranges stirrup, reduce bar splice.

Summary of the invention

The object of this invention is to provide a kind of Structural Steel Reinforced Concrete beam-column joint construction method, simplify construction, accelerating construction progress, improve efficiency of construction, and guarantee to promote Structural Steel Reinforced Concrete beam, workmanship that post connects and nodes domains supporting capacity.

Object of the present invention will be realized by following technical measures: construction method comprises: preparation of construction, Components installation, colligation beam column reinforcing bar and formwork concreting; Wherein, preparation of construction comprises: the welding of straight screw sleeve welding, the through preformed hole of beam main tendon and sash plate on steel column; Components installation comprises: the lifting of embedding anchor bolts, steel column, measurement update, steel column welding and seam inspection inspection; Colligation beam column reinforcing bar comprises: 1. longitudinal reinforcement and straight screw sleeve are mechanically connected; 2. longitudinal reinforcement is through preformed hole on steel column web; 3. on longitudinal reinforcement and steel column, stiffener is welded to connect; 4. longitudinal reinforcement is walked around steel column and is directly passed through; 5. the direct anchoring of longitudinal reinforcement and bean column node region.

Especially, concrete steps of constructing comprise:

1) steel beam column Deepen Design; Carry out Deepen Design to steel column position of joints, the position of refinement straight screw sleeve, diameter and quantity, the position of refinement sash plate and the exact position of the through preformed hole of absolute altitude, sectional dimension and beam main tendon, diameter, make shop detail drawing;

2) processing and fabricating of steel beam column; On steel column, straight screw sleeve welding adopts manual electric arc welding, and the through preformed hole of the beam main tendon on steel column web adopts precision optical machinery boring, and the stiffener manual electric arc welding on steel column is welded;

3) Components installation comprises: the lifting of embedding anchor bolts, steel column, measurement update, steel column welding and seam inspection inspection, the lifting of first segment steel column and temporary fixed time, adopt tower crane rotational vertical to hang method, suspension centre is arranged on column top, by special hanger be welded in capital two sides otic placode bolt and be connected, must be vertical during steel column lifting, certain height must be had during revolution, in order to avoid collide other component, steel column is before lifting, shaft welds cat ladder or hanging ladder, when steel column is in place, first steel column base plate has been penetrated stone bolt, be placed on and regulate on the nut of absolute altitude, and by the four sides center line at the bottom of post and basic axis to bit correction, when second section and above steel column are installed, first orientation axis, absolute altitude is uploaded and is translated into first segment capital from ground survey Controling network installing control axis projection, absolute altitude control line pilot measurement to first segment capital, when upper and lower nodal pattern steel column docks, first be fixed by the interim otic placode that connects, after verticality and misalignment of axe have adjusted, adopt symmetrical welding, keep disposable being continuously soldered, for one, second-order weld will be done seam inspection and detect, while guarantee steel column verticality, section steel beam between two steel columns should be installed in time, to correct the position of two steel columns, section steel beam welds mutually with the bracket of steel column and is connected with high-strength bolt, degree control and timing, under the measurement of two transits of both direction in length and breadth, the verticality of cable wind rope to steel column is utilized to correct, school is well welded location-plate afterwards, is fixed cable wind rope, need repeatedly to observe and correct its axis, absolute altitude, perpendicularity deviation value, until after meeting code requirement, butt welding can be carried out, field joint weld seam web adopts the two-sided full penetration of groove, wing plate to adopt groove one side full penetration, mainly adopts CO 2gas shielded arc welding is main welding method, adopts the CO that heat input is lower 2gas shielded arc welding, first welds cross web 2, rear welding wing plate, adopts the method be symmetrically welded, be soldered rear oxygen and prescind location-plate and hanger, polishing welding seams, weld seam adopts the on-site proving of Ultrasonic Nondestructive instrument, carries out next procedure construction after qualified,

4) when the web on Vierendeel girder longitudinal reinforcement and cross steel column intersects vertically, the connected mode through web is adopted; When the web on Vierendeel girder longitudinal reinforcement and cross steel column intersects vertically, also main for beam longitudinal reinforcement muscle directly can be anchored at joint core position; When beam longitudinal reinforcement and steel box column intersect vertically, adopt straight screw sleeve connected mode; When beam longitudinal reinforcement and steel column wing plate intersect vertically, beam longitudinal reinforcement 1 is welded on steel column sash plate; When reinforcing bar welds with steel column stiffener, weld seam should meet double welding, and fusion length is not less than the requirement of 5d, and d is longitudinal reinforcement diameter; The main muscle of Structural Steel Reinforced Concrete central sill longitudinal reinforcement adopt walk around steel column by or through reinforcing bar through preformed hole time, main muscle adopts mechanical connection or colligation overlap joint, and requirement simultaneously, in same cross section, main muscle joint rate should not be greater than 50%.

Advantage of the present invention and effect: reasonable Arrangement position of joints beam lengthways main steel bar and select the connected mode of rational beam lengthways main steel bar and steel column, position of joints structural integrity is good, effectively ensure that the construction quality of steel column position of joints; Technological process is simple, easy to operate, and reduce waste material, saving steel, has good economic benefit; The installation exercise time significantly shortens, and efficiency of construction improves, and workmanship and nodes domains supporting capacity promote.

Accompanying drawing explanation

Fig. 1 is construction method operation schematic diagram in the present invention.

Fig. 2 is beam-column joint position johning knot composition in the embodiment of the present invention 1.

Fig. 3 is that in the embodiment of the present invention 1, beam-column joint position preformed hole passes schematic diagram

Reference numeral comprises: longitudinal reinforcement 1, web 2, cross steel column 3, straight screw sleeve 4, preformed hole 5, steel box column 6, stiffener 7, build with body 8, build steam vent 9.

Detailed description of the invention

The principle of the invention is, Structural Steel Reinforced Concrete middle frame beam steel diameter is large, row is many, spacing is little between single reinforcing bar, beam, Column border node position reinforcing bar is closeer, space is less, and there is the phenomenon that many Vierendeel girders intersect at same position, cause multistory reinforced overlapping each other, only have reasonable Arrangement position of joints beam lengthways main steel bar and select the connected mode of rational beam lengthways main steel bar and steel column, guarantee construction quality.

As shown in Figure 1, in the present invention, construction method comprises: preparation of construction, Components installation, colligation beam column reinforcing bar and formwork concreting; Wherein, preparation of construction comprises: on steel column straight screw sleeve 4 weld, the welding of the through preformed hole 5 of beam main tendon and sash plate 7; Components installation comprises: the lifting of embedding anchor bolts, steel column, measurement update, steel column welding and seam inspection inspection; Colligation beam column reinforcing bar comprises: 1. longitudinal reinforcement 1 and straight screw sleeve 4 are mechanically connected; 2. longitudinal reinforcement 1 is through preformed hole 5 on steel column web 2; 3. longitudinal reinforcement 1 is welded to connect with stiffener 7 on steel column; 4. longitudinal reinforcement 1 is walked around steel column and is directly passed through; 5. longitudinal reinforcement 1 directly anchoring and bean column node region.

Below in conjunction with drawings and Examples, the invention will be further described.

Embodiment 1: construction concrete steps comprise:

1, steel beam column Deepen Design;

According to structural working drawing, Deepen Design is carried out to steel column position of joints, the position of refinement straight screw sleeve 4, diameter and quantity, the exact position of the position of refinement sash plate 7 and the through preformed hole 5 of absolute altitude, sectional dimension and beam main tendon, diameter, make shop detail drawing, treat to confirm by designing institute the foundation that rear can be used as construction and checks and accepts.

Comparatively concentrate intersection closeer at beam, Column border node reinforcing bar, this place also exists and comprises beam lengthways main steel bar 1 and be connected with steel column straight thread connecting sleeve 4, sash plate 7, Vierendeel girder bar diameter is large, row is many, spacing is little between single reinforcing bar, beam, Column border node position reinforcing bar is closeer, space is less, and there is the phenomenon that many Vierendeel girders intersect at same position, cause multistory reinforced overlapping each other.

2, the processing and fabricating of steel beam column;

On the material purchases of steel column, setting-out blanking, assembly welding, rectification, inspection, shipping and steel column straight screw sleeve 4 weld, the welding of reserved beam main tendon through hole sash plate 7, all by national standard and the execution of quality certification system documentation requirements.

On steel column, straight screw sleeve 4 welds and adopts manual electric arc welding, in order to ensure precision and the quantity of straight screw sleeve 4, linesman's laying-down must be had to mark datum axis and sleeve sideline, full weld connection is carried out behind location, in order to ensure welding quality, the iron rust of welding position should be removed, welding slag, spatter thing etc. should be removed after having welded, and carry out visual inspection, bead contour should even, full, transitions smooth, pore, slag inclusion, crackle, arc crater, overlap etc. must not be had, should repair welding in time when finding that there is defect.

The through preformed hole 5 of beam main tendon on steel column web 2 adopts precision optical machinery to hole, in order to ensure borehole accuracy and quality, linesman's laying-down must be had to mark datum axis and center, hole, all need to do after the assay was approved after upper qualified mark can carry out bottom operation through inspector after the boring of beam main tendon through hole.Through hole after processing is all carried out in accordance with regulations edge processing, removes burr, dirt etc., and carries out surface inspection.

Stiffener 7 manual electric arc welding on steel column is welded, in order to ensure precision position and the sectional dimension of stiffener 7, linesman's laying-down must be had to mark datum axis and edges of boards 7 line of putting more energy into, full weld connection is carried out behind location, in order to ensure the welding quality of stiffener 7, the iron rust of welding position should be removed, welding slag, spatter thing etc. should be removed after having welded, and carry out visual inspection, bead contour should even, full, transitions smooth, pore, slag inclusion, crackle, arc crater, overlap etc. must not be had, should repair welding in time when finding that there is defect.

3, Components installation;

3.1 Components installation comprise: the lifting of embedding anchor bolts, steel column, measurement update, steel column welding and seam inspection inspection;

3.2 embedding anchor bolts;

In order to ensure the embedding precision of stone bolt, according to plane control line, datum axis or center line etc., and absolute altitude control line, carry out screw bolt reinforcing after determining absolute altitude and verticality, adopt reinforcing bar derrick foot bolt regularly, often organize bolt and adopt 3 groups of reinforcing bar derricks, the position of derrick is as far as possible close with the position of structure reinforcing bars, to connect, reinforce between the upper and lower two-layer steel mesh reinforcement of raft plate and support, prevent stone bolt to be shifted and sink; Transit, level gauge is finally utilized to carry out inspecting for acceptance of bolt position and absolute altitude; The screw thread protection of stone bolt is quite important, screw thread will be coated with butter and wrap oilpaper.

The lifting of 3.3 first segment steel columns and temporary fixed;

Steel column lifting adopts tower crane rotational vertical to hang method; Lifting-steel-rope determines wire rope model according to merogenesis weight after calculating; Suspension centre is arranged on column top, by special hanger be welded in capital two sides otic placode bolt and be connected; Must be vertical during steel column lifting, certain height must be had during revolution, in order to avoid collide other component; Steel column, before lifting, shaft has welded cat ladder or hanging ladder, so that operating personnel are upper and lower and steel column rear loose hook in place; When steel column is in place, first steel column base plate is penetrated stone bolt, be placed on and regulate on the nut of absolute altitude, and by the four sides center line at the bottom of post and basic axis to bit correction, four sides is taken into account, and within the scope that Deviation Control is permitted in specification, puts on pressing plate, tight a bolt, be the work in place of finishing type steel column;

3.4 second sections and above steel column are installed;

Before the second segmented column and above steel column are installed, orientation axis, absolute altitude are uploaded and are translated into first segment capital from ground survey Controling network installing control axis projection, absolute altitude control line pilot measurement to first segment capital, and check whether and meet code requirement; When upper and lower nodal pattern steel column docks, be first fixed by the interim otic placode that connects, after verticality and misalignment of axe have adjusted, adopt symmetrical welding; Keep disposable being continuously soldered, seam inspection will be done for I and II weld seam and detect;

While guarantee steel column verticality, in stiffness structure, the relative position relation of two root type steel columns is particularly important, therefore for the section steel beam between two steel columns should be installed in time, to correct the position of two steel columns, guarantee globality is stablized, and section steel beam welds mutually with the bracket of steel column and is connected with high-strength bolt.

3.5 Survey control and correction;

Degree control and correction: under the measurement of two transits of both direction in length and breadth, utilize the verticality of cable wind rope to steel column to correct, school is well welded location-plate afterwards, fixed cable wind rope; Need repeatedly to observe and correct its axis, absolute altitude, perpendicularity deviation value, until after meeting code requirement, can butt welding be carried out.

3.6 steel column welding;

Field joint weld seam web 2 adopts the two-sided full penetration of groove, wing plate to adopt groove one side full penetration, mainly adopts CO 2gas shielded arc welding is main welding method.

Ensureing verticality of steel column to control welding deformation, the torsional deformation that the welding of reduction type steel column produces, adopting the CO that heat input is lower for this reason 2gas shielded arc welding, first welds cross web 2, rear welding wing plate, adopts the method be symmetrically welded.So both can ensure welding quality, reduce welding deformation, improve work efficiency, accelerating construction progress.

3.7 seam inspection inspections;

Be soldered rear oxygen and prescind location-plate and hanger, polishing welding seams.Weld seam adopts the on-site proving of Ultrasonic Nondestructive instrument, carries out next procedure construction after qualified.

4, colligation beam column reinforcing bar;

Section steel beam longitudinal reinforcement 1 has five kinds of situations in beam, Column border node position way: 1. longitudinal reinforcement 1 and straight screw sleeve 4 are mechanically connected; 2. longitudinal reinforcement 1 is through preformed hole 5 on steel column web 2; 3. longitudinal reinforcement 1 is welded to connect with stiffener 7 on steel column; 4. longitudinal reinforcement 1 is walked around steel column and is directly passed through; 5. longitudinal reinforcement 1 directly anchoring and bean column node region.

4.1 as shown in Figure 3, when the web 2 on Vierendeel girder longitudinal reinforcement 1 with cross steel column 3 intersects vertically, adopt the connected mode through web 2, this kind of connected mode requires that the upper and lower, left and right position of preformed hole 5 on steel column all wants accurate, in order to ensure the intensity of shaped steel, preformed hole 5 on shaped steel should be as far as possible little, but Kong Tai little inconvenience construction again, even owing to make or the reason of construction error causes reinforcing bar can not from preformed hole 5 through going.In the steel work Deepen Design stage, integrated structure working drawing, puts in place preformed hole 5 in-depth, careful and responsible and personnel that are knack are selected during steel column processing and fabricating, guarantee Steel section member quality, in addition, according to processing drawing, steel column punch position, size are carefully checked to the steel beam column reply of marching into the arena.When the web 2 on Vierendeel girder longitudinal reinforcement 1 with cross steel column 3 intersects vertically, also main for beam longitudinal reinforcement 1 muscle directly can be anchored at joint core position, now should notice that anchorage length should meet design and code requirement.

4.2, when beam longitudinal reinforcement 1 intersects vertically with steel box column 6, adopt straight screw sleeve 4 connected mode.This kind of mode requires higher to the position accuracy of reserved straight screw sleeve 4 and straight screw sleeve 4 and steel column welding quality.

Straight screw sleeve 4 should meet following regulation with the weld seam of steel column:

(1) weld seam must not have pore, slag inclusion, crackle, arc crater, overlap etc., should repair welding in time when finding that there is defect;

(2) bead contour should even, full, transitions smooth.

The scene processing of straight thread connector should meet the following requirements:

(1) end reinforced should cut flat;

(2) transverse cracks with reinforcing bar axis perpendicular must not be had;

(3) steel bar head length should meet product design requirement in company standard, and tolerance should be 0 ~ 2.0p, and p is pitch.

The installation quality of straight thread reinforced bar joint should meet the following requirements:

(1) can tighten with pipe tongs wrench during field joint, steel bar head should be made mutually to hold out against in straight screw sleeve 4 middle position, after jiont treatment, expose screw thread no more than 2p;

(2) after installing, screw-down torque checked by application torque spanner, and screw-down torque value should meet the regulation of following table:

Minimum screw-down torque value when straight thread connector is installed

Bar diameter mm ≤16 18~20 22~25 28~32 36~40 Screw-down torque N.m 100 200 260 320 360

Beam longitudinal reinforcement 1, when beam longitudinal reinforcement 1 intersects vertically with steel column wing plate, as shown in Figure 3, is welded on steel column sash plate 7 by 4.3.This kind of mode requires the sectional dimension of cross steel column 3 sash plate 7, absolute altitude must be corresponding with the cross section absolute altitude of the concrete frame beam be connected, size and angle with angle.The steel column transporting to field will contrast steel column processing drawing and check steel column stiffener 7 position and absolute altitude, sectional dimension and stiffener 7 welding quality.

When reinforcing bar welds with steel column stiffener 7, weld seam should meet double welding, and fusion length is not less than the requirement of 5d, and d is longitudinal reinforcement diameter.Vierendeel girder longitudinal reinforcement 1 end face should be cut flat, and object makes reinforcing bar end face vertical with mother metal axis direction, simultaneously by the cutaway of reinforcing bar head-bent, should adopt Abrasive cutting off machine or other special cut-out equipment, forbids gas cutting.Weld appearance acceptance criteria should meet the following requirements:

(1) face of weld should be smooth, and depression or weldering must not be had to saute;

(2) must not there be naked eyes visible crack in welding point region;

(3) the defect permissible values such as the undercut degree of depth, pore, slag inclusion and joint dimension deviation should meet regulation and stipulation;

After Vierendeel girder longitudinal reinforcement 1 has welded with steel column stiffener 7, the detection unit with professional qualification should be entrusted to carry out on-the-spot pull-out test to connector.Test specimen tensile bearing capacity should meet the following requirements:

4.4 reinforcing bars must have product certificate and inspection report and retrial to report, steel bar meter is wanted accurately, and shape, dimensional errors should meet design and code requirement.Steel concrete supporting operating personnel have to pass through technical training, pass the examination, take appointment with certificate, and the position of branch sleeve, specification and quantity should meet design and code requirement.Welder must take appointment with certificate, and welding arc welding electrode for welding must have outgoing certificate or inspection report in its tolerance band, and steel bar welding joint quality must be qualified.

In the present embodiment, for obtaining the effect implemented preferably, except taking aforementioned steel column position of joints Deepen Design, the making of steel beam column, Components installation, outside the construction of colligation beam column reinforcing bar, also need:

1) utilize similar engineering construction experience, first the main muscle of analytical structure system beam longitudinal reinforcement 1 be reliably connected with steel column construction Difficulties, affect and manually lower consumption and the principal element of construction speed, determine the control way of all kinds of influence factor;

2) before strengthening concrete construction, the detailed Deepen Design of secondary of steel column position of joints must be carried out, make shop detail drawing, to solve the problem that profile steel blanking is firmly connected with reinforcing bar and steel column.Bean column node position is mainly solved during design, number of steel bars, specification, position and primary-secondary beam reinforcing bar absolute altitude must be considered during design of node, upper and lower placing of reinforcement spacing of beam etc., so that steel column opens the through preformed hole 5 of reinforcing bar and welding straight thread connecting sleeve 4, sash plate 7 etc.;

3) reinforcement detailing and processing; Arrange and type of attachment by the main muscle of the node that node full-page proof model is clear and definite, carry out classifying and numbering, process respectively by different connection form, different connected node, in Structural Steel Reinforced Concrete, beam main tendon adopts straight screw sleeve 4 and when being welded to connect with stiffener 7, after steel rectangle column installation, the length of beam main tendon is just fixing, otherwise, long then cannot be connected with straight screw sleeve 4 and stiffener 7, short, to stretch in straight screw sleeve 4 length not, fusion length do not meet the demands, and has impact to structure stress; When the main muscle of Structural Steel Reinforced Concrete central sill longitudinal reinforcement 1 adopts direct anchoring and bean column node region, ensure that anchorage length meets the demands; The main muscle of Structural Steel Reinforced Concrete central sill longitudinal reinforcement 1 adopt walk around steel column by or through reinforcing bar through preformed hole 5 time, main muscle adopts mechanical connection or colligation overlap joint, and requirement simultaneously, in same cross section, main muscle joint rate should not be greater than 50%.

The present invention, through the design of in-depth steel column position of joints, Optimization-type steel column sash plate 7, the through preformed hole 5 of reinforcing bar, shop welded straight screw sleeve 4 accurately locates arrangement with Vierendeel girder reinforcing bar, improve the accuracy of steel column processing and fabricating, application CAD 3D modeling technique, provide constructional detail batch production to make, blanking is accurate, construction technology is advanced, solve the intensive reinforcing bar of position of joints to be reliably connected with steel column post, overall stiffened column construction quality meets design and construction code requirement, guarantee to promote Structural Steel Reinforced Concrete beam, the workmanship that post connects and nodes domains supporting capacity, node portion structure globality is improved greatly.Can effectively ensure welding quality, installation quality, improve work efficiency than traditional method, save sizable artificial and Master Cost, saved the duration; Guarantee that overall stiffened column construction quality meets design and construction code requirement, this kind of method saves the engineering time, the reduction of erection time, increases economic efficiency; Economic and practical, easy and simple to handle, and construction funds can be saved, reduce construction cost.Be applicable to concrete frame trestle-steel column in Structural Steel Reinforced Concrete construction-concrete frame beam position of joints construction, have construction simple, quick, be easy to grasp, construction comprehensive cost is low, efficiency high, building structure field can be widely used in, there is broad prospect of application, have higher application and popularization value.

Claims (2)

1. Structural Steel Reinforced Concrete beam-column joint construction method, is characterized in that, construction method comprises: preparation of construction, Components installation, colligation beam column reinforcing bar and formwork concreting; Wherein, preparation of construction comprises: the welding of straight screw sleeve (4) welding, the through preformed hole of beam main tendon (5) and sash plate (7) on steel column; Components installation comprises: the lifting of embedding anchor bolts, steel column, measurement update, steel column welding and seam inspection inspection; Colligation beam column reinforcing bar comprises: 1. longitudinal reinforcement (1) and straight screw sleeve (4) are mechanically connected; 2. longitudinal reinforcement (1) is through the upper preformed hole (5) of steel column web (2); 3. longitudinal reinforcement (1) is welded to connect with stiffener (7) on steel column; 4. longitudinal reinforcement (1) is walked around steel column and is directly passed through; 5. longitudinal reinforcement (1) directly anchoring and bean column node region.
2. Structural Steel Reinforced Concrete beam-column joint construction method as claimed in claim 1, is characterized in that, construction concrete steps comprise:
1) steel beam column Deepen Design; Deepen Design is carried out to steel column position of joints, the position of refinement straight screw sleeve (4), diameter and quantity, the position of refinement sash plate (7) and the exact position of the through preformed hole of absolute altitude, sectional dimension and beam main tendon (5), diameter, make shop detail drawing;
2) processing and fabricating of steel beam column; On steel column, straight screw sleeve (4) welding adopts manual electric arc welding, the through preformed hole of beam main tendon (5) on steel column web (2) adopts precision optical machinery boring, and the stiffener (7) on steel column adopts manual electric arc welding to weld;
3) Components installation comprises: the lifting of embedding anchor bolts, steel column, measurement update, steel column welding and seam inspection inspection, the lifting of first segment steel column and temporary fixed time, adopt tower crane rotational vertical to hang method, suspension centre is arranged on column top, by special hanger be welded in capital two sides otic placode bolt and be connected, must be vertical during steel column lifting, certain height must be had during revolution, in order to avoid collide other component, steel column is before lifting, shaft welds cat ladder or hanging ladder, when steel column is in place, first steel column base plate has been penetrated stone bolt, be placed on and regulate on the nut of absolute altitude, and by the four sides center line at the bottom of post and basic axis to bit correction, when second section and above steel column are installed, first orientation axis, absolute altitude is uploaded and is translated into first segment capital from ground survey Controling network installing control axis projection, absolute altitude control line pilot measurement to first segment capital, when upper and lower nodal pattern steel column docks, first be fixed by the interim otic placode that connects, after verticality and misalignment of axe have adjusted, adopt symmetrical welding, keep disposable being continuously soldered, for one, second-order weld will be done seam inspection and detect, while guarantee steel column verticality, section steel beam between two steel columns should be installed in time, to correct the position of two steel columns, section steel beam welds mutually with the bracket of steel column and is connected with high-strength bolt, degree control and timing, under the measurement of two transits of both direction in length and breadth, under utilizing cable wind rope to carry out school to the verticality of steel column, school is well welded location-plate afterwards, is fixed cable wind rope, need repeatedly to observe and correct its axis, absolute altitude, perpendicularity deviation value, until after meeting code requirement, butt welding can be carried out, field joint weld seam web (2) adopts the two-sided full penetration of groove, wing plate to adopt groove one side full penetration, mainly adopts CO 2gas shielded arc welding is main welding method, adopts the CO that heat input is lower 2gas shielded arc welding, first welds cross web (2), rear welding wing plate, adopts the method be symmetrically welded, be soldered rear oxygen and prescind location-plate and hanger, polishing welding seams, weld seam adopts the on-site proving of Ultrasonic Nondestructive instrument, carries out next procedure construction after qualified,
4) when the web (2) on Vierendeel girder longitudinal reinforcement (1) with cross steel column (3) intersects vertically, the connected mode through web (2) is adopted; When the web (2) on Vierendeel girder longitudinal reinforcement (1) with cross steel column (3) intersects vertically, beam longitudinal reinforcement (1) main muscle is directly anchored at joint core position; When beam longitudinal reinforcement (1) intersects vertically with steel box column (6), adopt straight screw sleeve (4) connected mode; When beam longitudinal reinforcement (1) intersects vertically with steel column wing plate, beam longitudinal reinforcement (1) is welded on steel column sash plate (7); When reinforcing bar welds with steel column stiffener (7), weld seam should meet double welding, and fusion length is not less than the requirement of 5d, and d is longitudinal reinforcement diameter; Structural Steel Reinforced Concrete central sill longitudinal reinforcement (1) main muscle adopt walk around steel column by or through the through preformed hole of reinforcing bar (5) time, main muscle adopts mechanical connection or colligation overlap joint, requirement simultaneously, in same cross section, main muscle joint rate should not be greater than 50%.
CN201410020683.7A 2014-01-17 2014-01-17 Structural Steel Reinforced Concrete beam-column joint construction method CN103806660B (en)

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