CN101418633B - Special section steel concrete composite structure reinforced bar engineering construction method - Google Patents
Special section steel concrete composite structure reinforced bar engineering construction method Download PDFInfo
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- CN101418633B CN101418633B CN2008101511102A CN200810151110A CN101418633B CN 101418633 B CN101418633 B CN 101418633B CN 2008101511102 A CN2008101511102 A CN 2008101511102A CN 200810151110 A CN200810151110 A CN 200810151110A CN 101418633 B CN101418633 B CN 101418633B
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Abstract
The invention discloses a special steel concrete combination structure steel bar engineering construction method, which comprises longitudinal steel bar binding and column stirrup binding. Two U-shaped stirrups are bound in place and are connected or welded into a closed hoop, the joints of two adjacent stirrups are staggered. When welding, double faced welding seam satisfies 5d or single faced welding seam satisfies 10d; the thickness of the column stirrup protective layer is accord with conventional requirement; the intersection part of SRC column and SRC beam is bound by steel bar: the first stirrup of the SRC beam is bound cling to the main stirrup of the SRC column, and the stirrup is not extended into the main stirrup of the SRC column. In the construction of the invention, the stirrups are welded or connected by screw sleeve without perforating and boring on the SRC, thereby improving the construction efficiency, and saving the cost.
Description
Technical field
The present invention relates to field of civil engineering, particularly relate to the job practices of reinforced bar engineering.
Background technology
Special section steel concrete composite structure is a kind of new structure system that grows up on steel work and concrete structure basis.Be applicable to high building structure, stride structure fields such as heavy structure, multilayer heavy duty industrial factory building, long span bridge beam greatly.The reinforcement installation engineering is carried out after the construction of steel member finishes in the shaped steel combining structure, reinforcing bar is intensive, the steel component surface is covered with WELDING STUDS, reinforcement installation is difficulty very, if meet steel frame beam or reinforcing bar beam column, steel frame beam beam infall, the reinforcing bar binding difficulty is bigger, generally stirrup is enclosed within advance on the reinforcing bar member of not welding, be evenly distributed according to designing requirement again after finishing Deng reinforcing bar member welding, or perforate burrows on reinforcing bar, stirrup is passed hole to be in place, efficiency of construction is low, and influences the stress performance of reinforcing bar, and the unreasonable safety that also influences structure is started in punching.
Summary of the invention
In order to overcome above-mentioned prior art deficiency, the invention provides special section steel concrete composite structure reinforced bar engineering construction method, improved efficiency of construction, saved cost.
Technical scheme of the present invention is achieved in that
The present invention includes the longitudinal bar colligation, the colligation of tie muscle puts the colligation of two U type stirrups in place, and two U type stirrups are connected with the anti-silk braid tube of straight thread or be welded into closing ring, face two stirrup joints mutually and stagger, when adopting welding, double welded joint satisfies 5d or inconel weld satisfies 10d; The post tendon protective layer thickness meets conventional requirement;
Reinforced concrete column and box steel frame beam intersection reinforcing bar binding:
The reinforced concrete column stirrup is close to vertically together last and first road, top, upper and lower main muscle colligation bottom of box steel frame beam, meet steel frame beam section stirrup and pass web reservation boring from bottom to top successively, connect with the positive and negative silk braid tube of roll extrusion straight thread, facing two stirrup joints mutually staggers, stirrup of every cover is just used spanner and is tightened;
The steel frame beam breadth of section is during greater than reinforced concrete column reinforcing bar breadth of section, and steel frame beam both sides and upper and lower part are not blocked main muscle and passed reinforced concrete column or anchor in the post, and the main muscle end bending of meeting frange plate vertically is welded on the frange plate;
When the steel frame beam breadth of section was less than or equal to reinforced concrete column reinforcing bar breadth of section, the upper and lower longitudinal bar way of steel frame beam was the same, and the vertical muscle of steel frame beam beam side is parallel to the steel frame beam web and adds the little bracket of weldering on reinforced concrete column when being blocked by frange plate;
The steel frame beam first road stirrup is close to the colligation of reinforced concrete column master muscle, and stirrup does not enter in the reinforced concrete column master muscle.
Described reinforced concrete column is meant the reinforcing bar structure of font reinforced concrete column, dump box type reinforced concrete column, box beam, structural I-beam form.
Because stirrup adopts welding or screw shell to connect in the present invention's construction, need not perforate burrow on reinforcing bar, has improved efficiency of construction, has saved cost.
The specific embodiment
1, cross reinforcing bar post reinforcing bar binding
(1) cross reinforcing bar post reinforcing bar binding
1. 90 degree elbows are done by design or code requirement in cross reinforcing bar column vertical rib bottom, insert foundation depth by designing requirement, design when unreceipted, are inserted to the colligation of subfoundation reinforced mesh and fix.Elbow length should satisfy design and code requirement.The position of every layer of reinforced mesh all is provided with positioning bar in the raft plate of basis, and the positioning bar diameter is not less than φ 12, and the colligation of carrying out joint bar after errorless is checked in the position of positioning bar.
2. tie muscle colligation
Draw the stirrup spacing line, the sleeve column stirrup, by the stirrup position line of having finished, the stirrup that has packaged is up moved, and colligation is from top to bottom adopted to twine the button colligation, stirrup wants vertical with main muscle, main muscle becomes the plum blossom colligation that interlocks with the joining of the non-corner of stirrup, post two ends stirrup up and down should be encrypted, and stirrup is apart from meeting design drawing and job specfication in encrypted area length and the encrypted area.
3. the post tendon protective layer thickness should meet design and code requirement.
(2) cross reinforcing bar post and box steel frame beam intersection reinforcing bar binding:
When 1. cross reinforcing bar post vertical reinforcement was met the box steel frame beam, vertical reinforcement bending 90 degree anchored in the concrete of box steel frame beam bottom (in the stirrup) requirement of anchorage length regulation and stipulation.Being blocked the steel bar vertical reinforcing bar takes root on steel frame beam again by equal number, specification, spacing, on the end reinforced employing arc welding weld all around box steel frame beam edge of a wing, or bending 90 degree anchors in end bend flat segments length and are not less than 15d in box steel frame beam concrete (in the stirrup).
2. cross reinforcing bar tie muscle is close to vertically together last and first road, top, upper and lower main muscle colligation bottom of box steel frame beam.Meet box steel frame beam section stirrup and pass web reservation boring from bottom to top successively, connect with the positive and negative silk braid tube of roll extrusion straight thread, face two stirrup joints mutually and should stagger, stirrup of every cover is just used spanner and is tightened, and avoids omitting the overstocked spanner of back stirrup and can't operate.
When 3. box steel frame beam breadth of section was greater than cross reinforcing bar post reinforcing bar breadth of section, box steel frame beam both sides and upper and lower part were not blocked main muscle and are passed cross reinforcing bar post or anchor in the post by regulation and stipulation.Meet the main muscle end bending 15d of frange plate, vertically be welded on the frange plate one side welding 10d, double welding 5d.Meet the main muscle of web, web satisfies the beam main tendon anchorage length apart from the post back gauge, and main muscle is anchored in the cross reinforcing bar post by regulation and stipulation length; Bending 15d in master's muscle end vertically was welded on the web one side welding 10d, double welding 5d when distance was not enough.
When 4. box steel frame beam breadth of section was smaller or equal to cross reinforcing bar post reinforcing bar breadth of section, the upper and lower longitudinal bar way of box steel frame beam was the same.The vertical muscle of box steel frame beam beam side is parallel to box steel frame beam web and adds weldering little bracket (steel plate) on cross reinforcing bar post when being blocked by frange plate, and material is with cross reinforcing bar post, and thickness is with cross reinforcing bar post frange plate and be not less than 15mm.Calf leg height h=box steel frame beam reinforcing bar height-35 * 2-100, width w=indulges muscle fusion length+50, the weld seam grade, highly with box steel frame beam and cross reinforcing bar post welding grade, highly.The vertical muscle of box steel frame beam beam side is welded on the little bracket one side welding 10d, double welding 5d.Meet the vertical muscle of box steel frame beam beam side of web, web satisfies the beam main tendon anchorage length apart from the post back gauge, and vertical muscle is anchored in the cross reinforcing bar post by regulation and stipulation length; Vertical muscle end bending 15d when distance is not enough, horizontal welding is connected on the web, and cross reinforcing bar post frange plate is parallel when being close to longitudinal reinforcement, and longitudinal reinforcement is welded on the frange plate one side welding 10d, double welding 5d.
5. the box steel frame beam first road stirrup is close to the colligation of cross reinforcing bar post master muscle, and stirrup does not enter in the cross reinforcing bar post master muscle.
(3) cross reinforcing bar post and I shape reinforcing bar beam intersection reinforcing bar binding:
When 1. cross reinforcing bar post vertical reinforcement was met I shape reinforcing bar beam, vertical reinforcement bending 90 degree anchored in the concrete of box steel frame beam bottom (in the stirrup) requirement of anchorage length regulation and stipulation.Being blocked the steel bar vertical reinforcing bar takes root on I shape reinforcing bar beam again by equal number, specification, spacing, on the end reinforced employing arc welding weld all around box steel frame beam edge of a wing, or bending 90 degree anchors in end bend flat segments length and are not less than 15d in box steel frame beam concrete (in the stirrup).
2. cross reinforcing bar tie muscle is close to vertically together last and first road, top, upper and lower main muscle colligation bottom of I shape reinforcing bar beam.Meet I shape reinforcing bar beam section stirrup and pass web reservation boring from bottom to top successively, connect with the positive and negative silk braid tube of roll extrusion straight thread, face two stirrup joints mutually and should stagger, stirrup of every cover is just used spanner and is tightened, and avoids omitting the overstocked spanner of back stirrup and can't operate.When I shape reinforcing bar web did not allow to reserve boring, stirrup was met web bending 15d, and horizontal welding is connected on the web, one side welding 10d, double welding 5d.
3. I shape reinforcing bar beam is met the vertical muscle of cross reinforcing bar post and stirrup way with box steel frame beam and cross reinforcing bar post intersection way.
4. the I shape reinforcing bar beam first road stirrup is close to the colligation of cross reinforcing bar post master muscle, and stirrup does not enter in the cross reinforcing bar post master muscle.
(4) cross reinforcing bar post and concrete wall intersection reinforcing bar binding:
When 1. concrete wall limit and cross reinforcing bar post post limit were neat, with neat the effluxing horizontal reinforcement and should catch on cross reinforcing bar post another side by the bending of column section 90 degree in post limit, bending length satisfied the regulation and stipulation requirement.Flat steel bar end bending 90 degree of concrete wall internal drainage anchor in interior one stirrup of cross reinforcing bar post bending length 15d.
2. concrete wall are neat with cross reinforcing bar post post limit on one side, and another side is in column section the time, with the post limit neat efflux horizontal reinforcement and the flat reinforcing bar way of internal drainage is the same; Another side effluxes the flat reinforcing bar way of the same concrete wall internal drainage of horizontal reinforcement way.
When 3. the concrete wall cross section was in cross reinforcing bar column section, bending 90 degree in body of wall horizontal reinforcement termination anchored in interior one stirrup of cross reinforcing bar post, bending length 15d.
4. when the concrete wall horizontal reinforcement passes through, by concrete wall S hoop specification, spacing stirrup is set outside cross reinforcing bar column section, stirrup should catch on interior one stirrup of cross reinforcing bar post.
2, box reinforced concrete column reinforcing bar binding:
(1) box reinforced concrete column reinforcing bar binding:
1. for the ease of box reinforcing bar construction, box reinforced concrete column laid reinforcement binding speed should be controlled at the construction of box reinforced concrete column after.Difficulty relatively when just having begun upright vertical reinforcement, can be on the box reinforced concrete column colligation or weld interim auxiliary reinforcement and located.
2. accurate in order to guarantee the tie shape and size, the on-the-spot technical professional of outfit organizes and implements, for practice of construction provides foundation in detail accurately.Box reinforced concrete column stirrup adds emits the tie full-page proof earlier man-hour on steel plate, the welding short steel rod head is made tie processing mold, and the joint location of definite stirrup.Four jiaos of stirrup spacings of drawing of reinforced concrete column now before the colligation by institute's setting-out colligation stirrup, guarantee that the stirrup level is vertical with perpendicular muscle.
3. 90 degree elbows are done by design or code requirement in box reinforcing bar column vertical rib bottom, insert foundation depth by designing requirement, design when unreceipted, are inserted to the colligation of subfoundation reinforced mesh and fix.Elbow length should satisfy design and code requirement.The position of every layer of reinforced mesh all is provided with positioning bar in the raft plate of basis, and the positioning bar diameter is not less than φ 12, and the colligation of carrying out joint bar after errorless is checked in the position of positioning bar.
4. the vertical muscle of post adopts the roll extrusion straight thread to connect, and by code requirement 50% joint location that staggers, levels joint spacing is greater than 35d.First step joint apart from floor face greater than 500mm and greater than H/6.
5. the stirrup of box reinforced concrete column adopts opening welding hoop, and joint location answers the diagonal angle to arrange, should turn around during colligation to stagger.The long 5d of opening welding hoop 90 degree elbows.
6. all adopt the overlap joint colligation at box reinforced concrete column flex point place (being reinforced concrete column inclination place) vertical applied force muscle, the lap length of joint should adhere to specification.
7. box reinforced concrete column stirrup colligation
＜1〉draws the stirrup spacing line: on upright good pillar vertical reinforcement, use drawing with coloured chalk stirrup spacing line by drawing.
＜2〉sleeve column stirrup: press the drawing design pitch, calculate good every tie muscle quantity, stirrup is deposited in around the box reinforcing bar pillar earlier, earlier stirrup all is enclosed within on the box reinforced concrete column, colligation from the top down then should be staggered opening during the cover stirrup and be declined.
＜3〉by the stirrup position line of having finished, the stirrup that has packaged up to be moved, colligation is from top to bottom adopted to twine the button colligation.
＜4〉stirrup and main muscle want vertical, and stirrup corner and main muscle intersection point are all wanted colligation, and main muscle becomes the plum blossom colligation that interlocks with the joining of the non-corner of stirrup.
＜5〉the superimposed place of the crotch of stirrup should adopt arc welding the superimposed place of the crotch of stirrup to be welded together fusion length 10d, weld bead height along the perpendicular muscle interlaced arrangement of pillar〉1/3d.
＜6〉the two ends stirrup should be encrypted about the post, and stirrup is apart from meeting design drawing and job specfication in encrypted area length and the encrypted area, and the encryption spacing is smaller or equal to 100mm and be not more than 5d.。
8. the post tendon protective layer thickness should meet design and code requirement, and cushion block should be tied up on the column vertical rib crust, spacing 1000mm, and (or be stuck in outer perpendicular muscle on plastic clip) is accurate to guarantee main tendon protective layer thickness.Simultaneously, can adopt reinforcing bar spacing frame to guarantee the correctness of reinforcement location.
(2) box reinforced concrete column and I shape reinforcing bar beam intersection reinforcing bar binding:
When 1. box reinforced concrete column vertical reinforcement was met I shape reinforcing bar beam, vertical reinforcement bending 90 degree anchored in the concrete of box steel frame beam bottom (in the stirrup) requirement of anchorage length regulation and stipulation.Being blocked the steel bar vertical reinforcing bar takes root on I shape reinforcing bar beam again by equal number, specification, spacing, on the end reinforced employing arc welding weld all around box steel frame beam edge of a wing, or bending 90 degree anchors in end bend flat segments length and are not less than 15d in box steel frame beam concrete (in the stirrup).
2. box reinforced concrete column stirrup is close to vertically together last and first road, top, upper and lower main muscle colligation bottom of I shape reinforcing bar beam.Meet I shape reinforcing bar beam section stirrup and pass web reservation boring from bottom to top successively, connect with the positive and negative silk braid tube of roll extrusion straight thread, face two stirrup joints mutually and should stagger, stirrup of every cover is just used spanner and is tightened, and avoids omitting the overstocked spanner of back stirrup and can't operate.When I shape reinforcing bar web did not allow to reserve boring, stirrup was met web bending 15d, and horizontal welding is connected on the web, one side welding 10d, double welding 5d.
3. I shape reinforcing bar beam is met box reinforced concrete column longitudinal reinforcement job practices and is met cross reinforcing bar column construction method with the box steel frame beam.
4. the I shape reinforcing bar beam first road stirrup is close to the colligation of box reinforced concrete column master muscle, and stirrup does not enter in the cross reinforcing bar post master muscle.
(3) box reinforced concrete column and concrete wall intersection reinforcing bar binding:
When 1. concrete wall limit and box reinforced concrete column post limit were neat, with neat the effluxing horizontal reinforcement and should catch on box reinforced concrete column another side by the bending of column section 90 degree in post limit, bending length satisfied the regulation and stipulation requirement.Flat steel bar end bending 90 degree of concrete wall internal drainage anchor in the box reinforced concrete column stirrup bending length 15d.
2. concrete wall are neat with box reinforced concrete column post limit on one side, and another side is in column section the time, with the post limit neat efflux horizontal reinforcement and the flat reinforcing bar way of internal drainage is the same; Another side effluxes the flat reinforcing bar way of the same concrete wall internal drainage of horizontal reinforcement way.
When 3. the concrete wall cross section was in box reinforced concrete column cross section, bending 90 degree in body of wall horizontal reinforcement termination anchored in the box reinforced concrete column stirrup, bending length 15d.
4. when the concrete wall horizontal reinforcement passes through, by concrete wall S hoop specification, spacing stirrup is set outside box reinforced concrete column cross section, stirrup should catch on box reinforced concrete column stirrup, makes body of wall and box reinforced concrete column connect into integral body.
(4) box reinforced concrete column and concrete beam intersection reinforcing bar binding:
Box reinforced concrete column chance concrete beam main tendon and stirrup are constant, and when the vertical muscle of beam was blocked by box reinforced concrete column reinforcing bar, the little bracket of welding on reinforcing bar was welded on the little bracket one side welding 10d, double welding 5d with the vertical muscle of beam then.Calf leg material, thickness is with the box reinforced concrete column, and is not less than 15mm.It is as follows that the height of little bracket and width calculate principle: when (deck-siding-70)＜steel column flange width, the sectional dimension of little bracket is: height h=h
1-35 * 2-(d+3); Width w=w
1-35 * 2.When (deck-siding-70) 〉=steel column flange width, the sectional dimension of little bracket is: height h=h
1-35 * 2-(d+3); Width w=w
1H wherein
1Be deck-molding, w
1Be deck-siding, d is an iron diameter on the beam main tendon.The weld seam grade of little bracket, drawknot plate and steel column is a secondary, and weld bead height is 12mm.
(5) dump box type reinforced concrete column reinforcing bar binding:
1. before the dump box type reinforced concrete column reinforcing bar binding, weld φ 20 spacer barss one every the 2.5M level on the peg on reinforced concrete column earlier, spacer bars length is with reinforced concrete column stirrup width.The spacer bars welding and assembling height (apart from the reinforcing bar identity distance from) and left-right deviation should be able to guard box type reinforced concrete column thickness of protection tier.
2. after having welded spacer bars, earlier on spacer bars, put main muscle above the box reinforced concrete column, and with the spacer bars colligation good after, overlap stirrup again and wear other three main muscle, then each colligation of upper and lower side what a locate stirrup, colligation successively from the top down at last.
Job practicess such as 3. stirrup making, colligation, welding and main muscle spreading are the same.
If 4. box reinforced concrete column in the inclination concrete wall, the concrete wall reinforcing bar can be held up on reinforced concrete column, welds body of wall reinforcing bar locating support one every the 2.5M level between two box reinforced concrete columns.Can adopt steel pipe or 5# channel-section steel to do locating support when two box reinforced concrete column spacings and the deadweight of body of wall reinforcing bar are big, locating support rigidity should be able to satisfy the not flexural deformation under deadweight of body of wall reinforcing bar.
5. the locating support welding and assembling height (apart from the reinforcing bar identity distance from) should be able to guard box type reinforced concrete column reinforcing bar and concrete wall thickness of protection tier, locating support can replace the spacer bars on the box reinforced concrete column continuously during elongated the setting.
3, I shape reinforcing bar beam steel colligation:
(1) I shape reinforcing bar beam steel colligation:
1. I shape reinforcing bar beam steel joint all adopts A level straight screw sleeve to connect, and the joint quantity in the same cross section is controlled in 50%.
2. on girder steel, weld the cross binding reinforcing bar earlier before placing beam face reinforcing bar; adopt the reinforcing bar of φ 32 to do the stull location, its length is that deck-siding deducts 50mm, one of 2 meters of longitudinal pitch; welding and assembling height should satisfy thickness of protection tier, is used for fixing the upper-lower position of beam steel.Top reinforcement directly is shelved on and is connected into elongated muscle above the girder steel, and the bottom muscle then is processed into and connects after form that the span length adds the two ends anchorage length penetrates stirrup again.
3. plate, secondary beam and I shape reinforcing bar beam infall, the reinforcing bar of plate be last, the reinforcing bar of secondary beam in, the reinforcing bar of I shape reinforcing bar beam is down.
4. stirrup is answered interlaced arrangement at the crotch at superimposed place in beam, and crotch adopts 135 °, and straight portion length is 10d.First stirrup of beam-ends should be arranged on distance post node edge 50mm place.Beam and post junction stirrup should be encrypted, and its spacing and encrypted area length all will adhere to specification.The bean column node place because the beam muscle is through post muscle inboard, causes the beam tendon protective layer to strengthen, and should adopt the gradual change stirrup, and gradual change length is generally 600mm to guarantee stirrup and the tight colligation of beam muscle.
When 5. principal rod was double, available bar dowel pad was between two-layer reinforcing bar, and the reinforcing bar array pitch should meet the design specifications requirement.
6. the list that passes the steel frame beam web props up hoop, should collude the beam stirrup outside, and catch on the waist muscle.Tie with reinforcing bar is processed into 50mm * 50mm cushion block with granite bottom master muscle pad is risen after finishing, and makes the bottom muscle paste dark girder steel, tendon protective layer at the bottom of the assurance beam.
(2) I shape reinforcing bar beam and box steel frame beam intersection reinforcing bar binding:
When I shape reinforcing bar beam was met the box steel frame beam, promptly I shape reinforcing bar beam was a secondary beam, and the box steel frame beam is a girder.The vertical muscle of I shape reinforcing bar beam is last, and the vertical muscle of box steel frame beam is following; If I shape reinforcing bar beam section height is less than the box steel frame beam, be that the vertical muscle of lower floor is blocked, then should bend 90 degree and anchor into (in the stirrup) in the box steel frame beam, or meet cross reinforcing bar post welding steel with box beam, to indulge muscle again and be welded on the steel plate, anchoring and welding all should be satisfied the regulation and stipulation requirement.
(3) I shape reinforcing bar beam and I shape reinforcing bar beam intersection reinforcing bar binding:
I shape reinforcing bar beam is met I shape reinforcing bar beam, and following, last, the waist muscle bends 90 degree and anchors in another I shape reinforcing bar beam stirrup length length than long vertical muscle than short vertical muscle, and anchorage length should satisfy regulation and stipulation.
If two I shape reinforcing bar beam sections are not simultaneously, less I shape reinforcing bar beam lower floor reinforcing bar bending 90 degree in cross section anchor in the big I shape reinforcing bar beam stirrup in cross section, and waist muscle way is the same, and anchorage length should satisfy regulation and stipulation.The big I shape reinforcing bar beam in vertical muscle cross section, upper strata is last, and the less I shape reinforcing bar beam in cross section is indulged muscle last.
(4) I shape reinforcing bar beam and concrete beam intersection reinforcing bar binding:
I shape reinforcing bar beam is met concrete beam, if two beam section height are identical, then the vertical muscle of I shape reinforcing bar beam is following, and the vertical muscle of concrete beam is last, and waist muscle bending 90 degree anchor in another beam stirrup.When if the concrete beam depth of section is low, then vertical muscle bending 90 degree of concrete beam lower floor anchor in the I shape reinforcing bar beam, and waist muscle way is the same, and anchorage length should satisfy regulation and stipulation.
4, box steel frame beam reinforcing bar binding:
(1) box steel frame beam reinforcing bar binding:
1. main muscle joint all adopts A level straight screw sleeve to connect, and joint should not be positioned at member maximal bending moment place, and the joint quantity in the same cross section is controlled in 50%.
When 2. big as if box steel frame beam cross section, stirrup is made into two parts and adopts A level straight screw sleeve to connect, and joint location should stagger mutually, and same position joint quantity is controlled in 50%.
3. positioning steel tube length is with box steel frame beam stirrup width, and its welding and assembling height should be able to satisfy beam steel protective layer thickness, and 2 meter one of longitudinal pitch is used for fixing the upper-lower position of beam steel.
4. plate, secondary beam and box steel frame beam infall, the reinforcing bar of plate be last, the reinforcing bar of secondary beam in, the reinforcing bar of box steel frame beam is down.
When 5. principal rod was arrange more, available bar dowel pad was between two-layer reinforcing bar, and the reinforcing bar array pitch should meet the design specifications requirement.The straight screw sleeve jointing should intersect mutually and stagger.
6. stirrup is answered interlaced arrangement at the crotch at superimposed place, and crotch adopts 135 °, and straight portion length is 10d.First stirrup of beam-ends should be arranged on distance post node edge 50mm place.Beam and post junction stirrup should be encrypted, and its spacing and encrypted area length all will adhere to specification.The bean column node place because the beam muscle is through post muscle inboard, causes the beam tendon protective layer to strengthen, and should adopt the gradual change stirrup, and gradual change length is generally 600mm to guarantee stirrup and the tight colligation of beam muscle.
7. first positioning steel tube support is installed gluten on support, put stirrup then, and the stirrup spacing of drawing on the vertical muscle in both sides, puts stirrup.
8. wear the bottom longitudinal stress reinforcing bar and the bent-up bar of box steel frame beam, stirrup is separated one by one by the spacing of having finished; Wear the bottom longitudinal stress reinforcing bar and the bent-up bar of secondary beam, and package stirrup; Put the bearing rod of primary and secondary beam; Across a certain distance that bearing rod and stirrup colligation is firm; Adjust stirrup spacing spacing is adhered to specification, the kidnapping stud is tied up main muscle again, and primary and secondary cooperates simultaneously carries out.
(2) box steel frame beam and box steel frame beam intersection reinforcing bar binding:
The box steel frame beam is met the box steel frame beam, and the vertical muscle of main tank type steel frame beam is following, and the vertical muscle of inferior box steel frame beam is last, and waist muscle bending 90 degree anchor in another box steel frame beam stirrup, and anchorage length should satisfy regulation and stipulation.
If two box steel frame beam depth of sections are not simultaneously, less box steel frame beam lower floor reinforcing bar bending 90 degree of depth of section anchor in the big box steel frame beam stirrup in cross section, and waist muscle way is the same, and anchorage length should satisfy regulation and stipulation.The upper strata big box steel frame beam of vertical muscle depth of section is last, and the less box steel frame beam of depth of section is indulged muscle last.
Two box steel frame beam infalls have to add to be tucked in, and adds to tuck in reinforcing bar and should be provided with by design is total, and anchorage length should satisfy the regulation and stipulation requirement.
(3) box steel frame beam and concrete beam intersection reinforcing bar binding:
When the box steel frame beam was met concrete beam, the vertical muscle of box steel frame beam passed through totally, and the vertical muscle in concrete upper strata anchors in the box steel frame beam by standard on the vertical muscle in box steel frame beam upper strata.Connect the vertical muscle of concrete waist muscle and lower floor at concrete beam connecting portion welding bracket.Perforate on the vertical steel plate of bracket is passed box steel frame beam lateral longitudinal muscle.Vertical muscle of concrete beam and bracket welded seam length are single face 10d, two-sided 5d, weld bead height 〉=2/3d.
Bracket material, thickness is with the box steel frame beam, and is not less than 15mm.It is as follows that the height of bracket and width calculate principle: when (deck-siding-70)＜steel column flange width, the sectional dimension of little bracket is: height h=h
1-35 * 2-(d+3); Width w=w
1-35 * 2.When (deck-siding-70) 〉=steel column flange width, the sectional dimension of bracket is: height h=h
1-35 * 2-(d+3); Width w=w
1H wherein
1Be concrete deck-molding, w
1Be the concrete deck-siding, d is an iron diameter on the concrete beam main tendon.The weld seam grade of bracket, drawknot plate and steel column is a secondary, and weld bead height is 12mm.
Claims (2)
1. special section steel concrete composite structure reinforced bar engineering construction method, comprise the longitudinal bar colligation, it is characterized in that, the colligation of tie muscle, the colligation of two U type stirrups is put in place, and two U type stirrups are connected with the anti-silk braid tube of straight thread or be welded into closing ring, face two stirrup joints mutually and stagger, when adopting welding, double welded joint satisfies 5d or inconel weld satisfies 10d; The post tendon protective layer thickness meets conventional requirement;
Reinforced concrete column and box steel frame beam intersection reinforcing bar binding:
The reinforced concrete column stirrup is close to vertically together last and first road, top, upper and lower main muscle colligation bottom of box steel frame beam, meet steel frame beam section stirrup and pass web reservation boring from bottom to top successively, connect with the positive and negative silk braid tube of roll extrusion straight thread, facing two stirrup joints mutually staggers, stirrup of every cover is just used spanner and is tightened;
The steel frame beam breadth of section is during greater than reinforced concrete column reinforcing bar breadth of section, and steel frame beam both sides and upper and lower part are not blocked main muscle and passed reinforced concrete column or anchor in the post, and the main muscle end bending of meeting frange plate vertically is welded on the frange plate;
When the steel frame beam breadth of section is less than or equal to reinforced concrete column reinforcing bar breadth of section, the upper and lower longitudinal bar way of steel frame beam is the same, when steel frame beam beam side longitudinal rib is blocked by frange plate, be parallel to the steel frame beam web and on reinforced concrete column, add the little bracket of weldering, steel frame beam beam side reinforcing bar is welded on the little bracket, one side welding 10d, two-sided welding 5d;
The steel frame beam first road stirrup is close to the colligation of reinforced concrete column master muscle, and stirrup does not enter in the reinforced concrete column master muscle.
2. special section steel concrete composite structure reinforced bar engineering construction method according to claim 1 is characterized in that, described reinforced concrete column is meant cross reinforcing bar post or dump box type reinforced concrete column.
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|---|---|---|---|---|
| CN102182320B (en) * | 2011-03-22 | 2012-07-25 | 中国十九冶集团有限公司 | Mounting method of steel reinforced concrete steel skeleton of large metallurgical industrial factory |
| CN102433938B (en) * | 2011-08-26 | 2014-07-30 | 中国建筑东北设计研究院有限公司 | Hooped steel reinforced concrete beam-column joint of core area U-shaped column |
| CN109667385B (en) * | 2018-12-22 | 2021-07-20 | 广州市天作建筑规划设计有限公司 | Reinforced concrete ultra-short column |
| CN110469124A (en) * | 2019-08-13 | 2019-11-19 | 武汉一冶建筑安装工程有限责任公司 | Steel hoop reinforcement in concrete construction method |
| CN117108075A (en) * | 2023-10-16 | 2023-11-24 | 中国二十二冶集团有限公司 | Method for connecting stressed steel bar and stiff steel column in stiff structure |
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2008
- 2008-09-25 CN CN2008101511102A patent/CN101418633B/en active Active
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| Publication number | Publication date |
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| CN101418633A (en) | 2009-04-29 |
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