CN103255840A - Combined built-in fitting for concrete walls and column tie bars and installation construction method thereof - Google Patents
Combined built-in fitting for concrete walls and column tie bars and installation construction method thereof Download PDFInfo
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- CN103255840A CN103255840A CN2013101532006A CN201310153200A CN103255840A CN 103255840 A CN103255840 A CN 103255840A CN 2013101532006 A CN2013101532006 A CN 2013101532006A CN 201310153200 A CN201310153200 A CN 201310153200A CN 103255840 A CN103255840 A CN 103255840A
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Abstract
The invention discloses a combined built-in fitting for concrete walls and column tie bars and an installation construction method of the combined built-in fitting. An iron plate strip, parallel thread sleeves and anchoring bars form the combined built-in fitting for the concrete walls and the column tie bars. The built-in fitting is strapped or welded on a steel reinforcement framework, or the built-in fitting is nailed on the inner side of a timber formwork through nails according to the adoption of different formworks. Tie bars penetrate into the pre-buried parallel thread sleeves in a parallel-thread mode after formwork removal, and installation construction of the tie bars is finished. Installation construction of the concrete walls and the column tie bars is completed through the steps of massive and shaping production of the combined built-in fitting, positioning of built-in fitting locations, supports, wall forms, installation of the built-in fitting, concreting, installation of the tie bars after the formwork removal and the like. The combined built-in fitting for the concrete walls and the column tie bars is reasonable and simple in structure, easy to produce and manufacture, convenient to operate and low in cost. Assembling production and installation of the built-in fitting are convenient, operation is simple, construction is convenient, quality can be controlled conveniently, forming effect of concrete is good, and pulling resistance of the tie bars can be effectively guaranteed. Accurate locations of the tie bars are ensured, work efficiency and quality stability are improved, and good social and economic benefits are achieved.
Description
Technical field
The present invention relates to structure structure and the construction method of installation of a kind of straight screw sleeve, iron plate bar assembly built-in fitting approved product, this assembly built-in fitting is used for the construction of construction work concrete drawknot muscle, belongs to the building iron technical field.
Background technology
At present, concrete wall, post tension rib in construction work are kept somewhere in the construction, what extensively adopt is to reserve tension rib, pre-embedded steel slab or several frequently seen job practicess such as bar reinforcement welding and chemically-planted steel bar in the concrete structure, but in the engineering construction practice process, we find that above method all exists defective workmanship and the hidden danger of quality that is difficult to overcome, and work progress is loaded down with trivial details, and subject matter is as follows:
One, reserves tension rib in the concrete structure
(1) reserving hole causes damaged template, and the position is wayward;
(2) concrete cast, shake easily cause loosening, the downslide of tension rib when smashing, cause off normal;
Cause concrete surface to destroy when (3) tension rib is picked out after the form removal, reinforcing bar is difficult for straightening;
(4) tension rib when welding fusion length, welding quality are wayward.
Two, pre-embedded steel slab or bar reinforcement welding in the template
(1) palpus electric welder subsequent operation is more, and the consumption worker is more, the cost height;
(2) fusion length and weldquality are wayward;
(3) anti-pulling intensity instability, drawing experiment qualification rate can not meet the demands.
Three, chemically-planted steel bar
(1) drilling operation during bar planting has caused certain infringement to surrounding concrete; (2) if clear hole totally can not make the adhesion stress between structure glue and the concrete significantly descend; (3) the not full meeting of injecting glue reduces actual anchorage depth in the bar planting operation; (4) quality stability of structure glue itself existing problems; (5) external conditions such as temperature, humidity, vibration are unfavorable to the durability of structure glue;
(6) later stage easily causes to shake during wall construction and pulls out destruction.
Be (5) point for the chemically-planted steel bar most important wherein, the general epoxy resin structural adhesive that adopts produces in structure under the situation about shaking can produce embrittlement, directly causes the anti-pulling performance of tension rib seriously to descend, and structural seismic capacity linearly descends.The seimic disaster census of Wenchuan, Sichuan violent earthquake shows that the body of wall tension rib is extremely important to providing fortification against earthquakes of construction work, directly influence the safety of numerous people's lives and properties, phenomenons such as in addition, the location that exists in construction of chemically-planted steel bar is inaccurate, hole depth is not enough, boring is unclear are the anti-seismic performance of remote-effects structure all.
Summary of the invention
The objective of the invention is at above shortcomings in existing construction work concrete wall, the post tension rib job practices, a kind of concrete wall, post tension rib assembly built-in fitting and construction method of installation thereof are provided, this assembly built-in fitting making, install all very convenient, and improved the construction quality of tension rib, reduce the structure secondary and destroy, save manually, improved the pull strength of tension rib, guarantee the structural seismic requirement, remarkable in economical benefits.
The objective of the invention is to be achieved through the following technical solutions, a kind of concrete wall, post tension rib assembly built-in fitting are provided with an iron plate bar, two straight screw sleeves and two anchor ribs; Iron plate bar middle part is arranged with two preformed holes, and the preformed hole aperture is identical with the straight screw sleeve external diameter; Two straight screw sleeves are vertically set on iron plate bar one side of corresponding preformed hole respectively; Described anchor rib, straight screw sleeve are positioned at iron plate bar homonymy, and anchor rib one end is connected with straight thread with straight screw sleeve, and anchor rib screws in the length of straight screw sleeve greater than 6mm, and the anchor rib other end is provided with crotch, and the crotch of two anchor ribs is oppositely arranged.
Described iron plate bar is of a size of 200mm * 50mm * 3mm.
Described anchor rib is that diameter phi 6mm, length are the plain bar of 120mm, and the length of the crotch at anchor rib two ends is 60mm.
Described straight screw sleeve and iron plate bar spot-welded on, the weld bead height between iron plate bar and the straight screw sleeve is 5mm, the length of straight screw sleeve is 30mm.
Described iron plate bar two ends are arranged with circular hole, and circular hole is arranged on the preformed hole outside, and the circular hole aperture is 3mm.
Above-mentioned concrete wall, the post tension rib construction method of installation of assembly built-in fitting is characterized in that, may further comprise the steps:
(1) after the colligation of structure vertical reinforcement finishes, carries out the measurement and positioning unwrapping wire, emit wall column tension rib vertical and horizontal level and mark at vertical reinforcement;
(2) Zhi Shuxiang wooden form, settle described assembly built-in fitting according to the mark position of tension rib on the cage of reinforcement, described iron plate bar and wooden form inboard are close to, two described straight screw sleeves are vertically set on iron plate bar one side respectively, the straight screw sleeve tube hole good plastics of one end plug protect the plug back and are close to the wooden form inboard, the straight screw sleeve tube hole other end screws in described anchor rib, the anchor rib screw-in length is greater than 6mm, anchor rib, straight screw sleeve are positioned at iron plate bar homonymy, and the crotch of two anchor ribs is oppositely arranged; The circular hole that passes iron plate bar two ends with iron nail marks closely the assembly built-in fitting in the wooden form inboard;
(3) envelope mould after-pouring structural concrete treats that structure reaches the design strength form removal, the inboard concrete drawknot of anchor rib and wooden form, and finding out iron plate bar position is the position of pre-buried straight screw sleeve;
(4) extracting plastics in the straight screw sleeve protects plug and the sleeve hole is cleaned out;
(5) tension rib is screwed in two straight screw sleeve holes that are embedded in advance in concrete wall, the post with the straight thread ways of connecting, the tension rib screw-in length is greater than 6mm.
The present invention can also be achieved through the following technical solutions, and a kind of concrete wall, post tension rib assembly built-in fitting are provided with an iron plate bar, two straight screw sleeves and two anchor ribs; Iron plate bar middle part is arranged with two preformed holes, and the preformed hole aperture is identical with the straight screw sleeve external diameter; Two straight screw sleeves are vertically set on iron plate bar one side of corresponding preformed hole respectively, and the thickness sum of the length of described straight screw sleeve and iron plate bar is thickness of protection tier; Described anchor rib passes the preformed hole on the described iron plate bar and is threaded with straight screw sleeve, and the anchor rib other end is provided with crotch, and the crotch of two anchor ribs is oppositely arranged.
Described iron plate bar and straight screw sleeve spot-welded on, the weld bead height between iron plate bar and the straight screw sleeve are 5mm.
Described iron plate bar is of a size of 200mm * 50mm * 3mm.
Described anchor rib is that diameter phi 6mm, length are the plain bar of 120mm, and the length of the crotch at anchor rib two ends is 60mm.
Above-mentioned concrete wall, the post tension rib construction method of installation of assembly built-in fitting is characterized in that, may further comprise the steps:
(1) after the colligation of structure vertical reinforcement finishes, carries out the measurement and positioning unwrapping wire, emit wall column tension rib vertical and horizontal level and mark at vertical reinforcement;
(2) when Zhi Shuxiang steel form or wooden form, settle described assembly built-in fitting according to the mark position of tension rib on the cage of reinforcement, with the parallel placement with cage of reinforcement of described iron plate bar, two described straight screw sleeves are vertically set on iron plate bar one side respectively, filled in the straight screw sleeve one end tube hole and be close to the template inboard after plastics protect plug, the straight screw sleeve other end screws in described anchor rib, the anchor rib screw-in length is greater than 6mm, anchor rib passes the preformed hole on the iron plate bar and is threaded with straight screw sleeve, two anchor rib crotches are oppositely arranged, iron plate strip adoption spot-welded on or be arranged on the cage of reinforcement with the method for pricking the silk colligation;
(3) envelope mould after-pouring structural concrete, the thickness of concrete cover is that the thickness of reinforcement cover is length and the iron plate bar thickness sum of straight screw sleeve, treat that structure reaches the design strength form removal, the inboard concrete drawknot of anchor rib and template, finding out iron plate bar position is the position of pre-buried straight screw sleeve;
(4) extracting plastics in the straight screw sleeve protects plug and the sleeve hole is cleaned out;
(5) tension rib is screwed in two straight screw sleeve holes that are embedded in advance in concrete wall, the post with the straight thread ways of connecting, the tension rib screw-in length is greater than 6mm.
Compared with prior art, the present invention has following technique effect:
The first, the iron plate bar is of a size of 200mm * 50 mm * 3 mm, installs by iron nail with wooden form to be connected.Iron plate bar middle part is provided with supporting two holes and the weldering of straight screw sleeve one end points, and iron plate bar two-end part is provided with aperture and clenches in the wooden form inboard with iron nail.Anchor rib is the plain bar that end has mantle fiber, the conventional φ 6 identical with the straight screw sleeve diameter of bore.The anchor bar length that is embedded in simultaneously the template inboard in advance is 120mm, and terminal band crotch is connected in the straight thread mode with the straight screw sleeve other end.The straight screw sleeve point that matches with the tension rib of terminal mantle fiber is welded on two preformed holes of middle part of iron plate bar, weld bead height 5mm, the aperture is identical with the straight screw sleeve external diameter, two pitchs of holes are the tension rib level interval, iron plate bar one side and straight screw sleeve welding are fixed on this assembly built-in fitting in concrete wall, the post according to the position of tension rib.If wooden form, the aperture of opening by iron plate bar two ends is marked closely inboard at wooden form with nail.If steel form, the iron plate bar just adopts spot welding or with pricking the silk colligation in the precalculated position of cage of reinforcement, the length of straight screw sleeve and iron plate bar thickness sum are thickness of protection tier.Straight screw sleeve hole one end protects the good back of plug plug with plastics to be close to the template inboard, and the other end has anchor rib and the inboard concrete drawknot of template of crotch with straight thread connected mode injection end.After the form removal, the tension rib that end is had mantle fiber is adjacent to the straight screw sleeve hole of template inboard with the mode injection of straight thread.This straight screw sleeve, iron plate bar, anchor bar assembly built-in fitting are contacted directly the regularization of five metals manufacturer and are produced in batches.Finished product is transported to the scene, directly is installed in the wooden form inboard by steel nail, and is simple to operation.
The second, by built-in fitting assembly typing produce, location, tension rib position, built-in fitting install and fix, step such as injection tension rib in the wall form, concreting, form removal, straight screw sleeve, finish the installation of concrete wall, post tension rib.The making of built-in fitting, installation, all very convenient do not influence the concrete formation effect, and the tension rib position is accurate, and is easy to control, can effectively overcome the deficiency that exists in the existing tension rib job practices, improve engineering construction quality and economic benefit.
The 3rd, adopt this tension rib connected mode, can reach the qualified requirement of tension rib anti-pulling intensity among " masonry structure engineering construction quality standards of acceptance " GB50203-2011.Tension rib intensity is calculated and is connected tension rib in pre-buried straight thread member mode, its calculation of Tensile Strength is as follows: according to " regular screw threads diameter and pitch series " GB/T 193-2003, reinforcing bar nominal diameter d=6.5mm, look into this standard " diameter and pitch combination series " (table one), get pitch t=0.75mm.According to " Code for design of steel structures " GB-50017-2003, calculate bolt tensile strength: the effective diameter de=d-13/24 of bolt
T=5.8mm, bolt effective area are Ae=
/ 4 * (d-13/24
T) 2=26.31mm
2, HPB235 reinforcing bar tensile strength standard value fbt=235N/ mm
2The tension bearing capacity calculation value of single bolt is Ntb1=Ae * fbt * 0.9=
De
2/ 4 * fbt * 0.9=5585.9N.6.5 reinforcing bar tensile strength design load is: Ntb=
d
2/ 4 * fbt * 0.9=6964.9N.Ntb1/Ntb=80.2%, according to test specification, it is qualified that its control tensile stress is pressed 0.8 positive and negative 5% of tension rib strength standard value, so adopt this tension rib connected mode, can reach the qualified requirement of tension rib anti-pulling intensity among " masonry structure engineering construction quality standards of acceptance " GB50203-2011.
Description of drawings
Fig. 1 is the concrete wall among the embodiment 1, the structural representation that the post tension rib is used the assembly built-in fitting;
Fig. 2 is the structural representation that Fig. 1 concrete wall, post tension rib are used the iron plate bar of assembly built-in fitting;
Fig. 3 is the concrete wall among the embodiment 2, the structural representation that the post tension rib is used the assembly built-in fitting;
Fig. 4 is the structural representation that Fig. 3 concrete wall, post tension rib are used the iron plate bar of assembly built-in fitting;
Fig. 5 is that Fig. 3 is the concrete wall among the embodiment 1, the syndeton schematic diagram that the post tension rib is used assembly built-in fitting and cage of reinforcement;
Wherein: 1 template, 2 anchor ribs, 3 straight screw sleeves, 4 iron plate bars, 5 preformed holes, 6 circular holes, 7 iron nails, 8 concrete wall, post reinforcing bar, 9 weld seams.
The specific embodiment
As shown in Figure 1, 2, a kind of concrete wall, post tension rib assembly built-in fitting are provided with an iron plate bar 4, two straight screw sleeves 3 and two anchor ribs 2.
Concrete wall, the post tension rib construction method of installation of assembly built-in fitting is characterized in that, may further comprise the steps:
(1) after the colligation of structure vertical reinforcement finishes, carries out the measurement and positioning unwrapping wire, emit wall column tension rib vertical and horizontal level and mark at vertical reinforcement;
(2) Zhi Shuxiang wooden form, settle described assembly built-in fitting according to the mark position of tension rib on the cage of reinforcement, described iron plate bar 4 is close to the wooden form inboard, two described straight screw sleeves 3 are vertically set on iron plate bar 4 one sides respectively, 3 good plastics of hole one end plug of straight screw sleeve protect the plug back and are close to the wooden form inboard, 3 hole other ends of straight screw sleeve screw in described anchor rib 2, anchor rib 2 screw-in lengths are greater than 6mm, anchor rib 2, straight screw sleeve 2 are positioned at iron plate bar 4 homonymies, and the crotch of two anchor ribs 2 is oppositely arranged; The circular hole 6 that passes iron plate bar 4 two ends with iron nail 7 marks closely the assembly built-in fitting in the wooden form inboard;
(3) envelope mould after-pouring structural concrete treats that structure reaches the design strength form removal, anchor rib 2 and the inboard concrete drawknot of wooden form, and finding out iron plate bar 4 positions is the position of pre-buried straight screw sleeve 3;
(4) extracting plastics in the straight screw sleeve 3 protects plug and the sleeve hole is cleaned out;
(5) tension rib is screwed in two straight screw sleeve 3 holes that are embedded in advance in concrete wall, the post with the straight thread ways of connecting, the tension rib screw-in length is greater than 6mm.
Shown in Fig. 3,4,5, a kind of concrete wall, post tension rib assembly built-in fitting are provided with an iron plate bar 4, two straight screw sleeves 3 and two anchor ribs 2.
Concrete wall, the post tension rib construction method of installation of assembly built-in fitting may further comprise the steps:
(1) after the colligation of structure vertical reinforcement finishes, carries out the measurement and positioning unwrapping wire, emit wall column tension rib vertical and horizontal level and mark at vertical reinforcement;
(2) when Zhi Shuxiang steel form or wooden form, settle described assembly built-in fitting according to the mark position of tension rib on the cage of reinforcement, with the parallel placement with cage of reinforcement of described iron plate bar 4, two described straight screw sleeves 3 are vertically set on iron plate bar 4 one sides respectively, filled in the straight screw sleeve 3 one end tube holes and be close to the template inboard after plastics protect plug, straight screw sleeve 3 other ends screw in described anchor rib 2, anchor rib 2 screw-in lengths are greater than 6mm, anchor rib 2 passes the preformed hole 5 on the iron plate bar 4 and is threaded with straight screw sleeve 3, two anchor rib 2 crotches are oppositely arranged, and iron plate bar 4 adopts spot-welded on or is arranged on the cage of reinforcement with the method for pricking the silk colligation;
(3) envelope mould after-pouring structural concrete, thickness of concrete cover is that thickness of protection tier is length and the iron plate bar 4 thickness sums of straight screw sleeve 3, treat that structure reaches the design strength form removal, anchor rib 2 and the inboard concrete drawknot of template, finding out iron plate bar 4 positions is the position of pre-buried straight screw sleeve 3;
(4) extracting plastics in the straight screw sleeve 3 protects plug and the sleeve hole is cleaned out;
(5) tension rib is screwed in two straight screw sleeve 3 holes that are embedded in advance in concrete wall, the post with the straight thread ways of connecting, the tension rib screw-in length is greater than 6mm.
By built-in fitting assembly typing produce, location, tension rib position, built-in fitting install and fix, step such as injection tension rib in the wall form, concreting, form removal, straight screw sleeve, finish the installation of concrete wall, post tension rib.
1, concrete wall, post tension rib mainly are with two straight screw sleeves of full weld technology welding on the iron plate bar with the composition of assembly built-in fitting, weld seam is controlled to be 5mm, sleeve hole protects plug simultaneously, distance between two straight screw sleeves is two level intervals between the tension rib, level interval is that per 100 mm are no less than 1, the vertical spacing reference vertical spacing setting of tension rib generally speaking of iron plate bar built-in fitting: dispose 2 φ, 6 steel ties and load bearing wall or post drawknot every 500mm along the wall height.The barrel dliameter of straight screw sleeve matches with the diameter of the tension rib that has mantle fiber, guarantee to have the tension rib of mantle fiber can the bolt sleeve with straight thread ways of connecting injection built-in fitting in, the specification of tension rib is by designing requirement; The length of straight screw sleeve is determined by the protective layer thickness of concrete component; it highly is specially: the thickness+thickness of concrete cover of iron plate bar; difference according to the structural element protective layer thickness; compliant sleeve can be divided into shear wall tension rib straight screw sleeve; concrete column tension rib straight screw sleeve; because the sleeve height arranges respectively according to different protective layer thickness; can guarantee that when concrete pouring construction thickness of concrete cover is qualified reliable; can reduce simultaneously the use of topping plastic washer or concrete cover cushion block in a large number; the saving of labor; material-saving; and can find the position of straight screw sleeve after the form removable very easily; the specification of iron plate bar is 200mm * 50 mm * 3 mm; the iron plate bar; contact the unified typing processing of producer in advance after the specification of straight screw sleeve and quantity are added up according to the engineering actual conditions, produce in batches.
Table 1 concrete cover minimum thickness (mm of unit)
| Environment category | Plate, wall, shell | Beam, post, bar |
| One | 15 | 20 |
| Two a | 20 | 25 |
| Two b | 25 | 35 |
| Three a | 30 | 40 |
| Three b | 40 | 50 |
Annotate: when strength grade of concrete was not more than C25, topping numerical value increased 5mm in the table.
2, on the good cage of reinforcement of colligation to the position location unwrapping wire of the iron plate bar built-in fitting of band straight screw sleeve, welding personnel is by carrying out the welding of iron plate bar along the vertical axis direction of shear wall, post, spot welding is adopted in welding, site error is controlled in 2mm.Iron plate bar surface is not parallel or can not coincide together reliably the time with cage of reinforcement, the suitable parallels plate of the bigger side in slit between iron plate bar and the cage of reinforcement; If wooden model, two stomidiums by the iron plate bar are fixed on the wooden model inboard with built-in fitting.
3, before the welding of straight screw sleeve and iron plate bar, on the iron plate bar, accurately locate, determine the sleeve position, and carry out mark, processing put in place when this work can be produced the iron plate bar in five metals manufacturer, before welded sleeve the sleeve cavity was cleaned out, and nozzle protects plug by sheath;
4, determine the welding position according to the straight screw sleeve telltale mark on the iron plate bar, carry out blanking, welding according to the specification of engineering quantity size, sleeve, the locations of structures different arrangement special messenger who buries underground and skilled welder, guarantee that the iron plate bar is accurate in the position on the cage of reinforcement and the position of straight screw sleeve on the iron plate bar, reduce position deviation each other, guarantee that sleeve is vertical with the iron plate bar;
5, earlier straight screw sleeve and the welding of iron plate bar, iron plate bar are welded with the member cage of reinforcement more sequentially or with the galvanized wire colligation in the position that arranges of (deciding on field working conditions) on the cage of reinforcement, the position of iron plate bar on cage of reinforcement must guarantee to meet tension rib, must carry out strict measurement unwrapping wire location in the position of cage of reinforcement to the iron plate bar, guarantee that satisfying tension rib in vertical and horizontal direction arranges requirement.
6, the processing of the length of tension rib and mantle fiber must be processed in unified regularization, produces according to the needs batch machining of engineering quantity.
7, reach form removal after the design strength after the concreting moulding; because iron plate bar thickness+sleeve height is exactly protective layer thickness; so be easy to find the position of sleeve; the plastics of extracting sleeve hole protect plug; clean out the casing hole; just can will have in the mode injection sleeve of tension rib with straight thread of mantle fiber, operate simple and easy, easy construction.
Claims (10)
1. concrete wall, post tension rib assembly built-in fitting is characterized in that, are provided with an iron plate bar, two straight screw sleeves and two anchor ribs; Iron plate bar middle part is arranged with two preformed holes, and the preformed hole aperture is identical with the straight screw sleeve external diameter; Two straight screw sleeves are vertically set on iron plate bar one side of corresponding preformed hole respectively; Described anchor rib, straight screw sleeve are positioned at iron plate bar homonymy, and anchor rib one end is connected with straight thread with straight screw sleeve, and anchor rib screws in the length of straight screw sleeve greater than 6mm, and the anchor rib other end is provided with crotch, and the crotch of two anchor ribs is oppositely arranged.
2. concrete wall according to claim 1, post tension rib assembly built-in fitting is characterized in that, described iron plate bar is of a size of 200mm * 50mm * 3mm.
3. concrete wall according to claim 1, post tension rib assembly built-in fitting is characterized in that, described anchor rib is that diameter phi 6mm, length are the plain bar of 120mm, and the length of the crotch at anchor rib two ends is 60mm.
4. concrete wall according to claim 2, post tension rib assembly built-in fitting is characterized in that, described straight screw sleeve and iron plate bar spot-welded on, and the weld bead height between iron plate bar and the straight screw sleeve is 5mm, the length of straight screw sleeve is 30mm.
5. concrete wall according to claim 1, post tension rib assembly built-in fitting is characterized in that, described iron plate bar two ends are arranged with circular hole, and circular hole is arranged on the preformed hole outside, and the circular hole aperture is 3mm.
6. the described concrete wall of claim 1, the post tension rib construction method of installation of assembly built-in fitting is characterized in that, may further comprise the steps:
(1) after the colligation of structure vertical reinforcement finishes, carries out the measurement and positioning unwrapping wire, emit wall column tension rib vertical and horizontal level and mark at vertical reinforcement;
(2) Zhi Shuxiang wooden form, settle described assembly built-in fitting according to the mark position of tension rib on the cage of reinforcement, described iron plate bar and wooden form inboard are close to, two described straight screw sleeves are vertically set on iron plate bar one side respectively, the straight screw sleeve tube hole good plastics of one end plug protect the plug back and are close to the wooden form inboard, the straight screw sleeve tube hole other end screws in described anchor rib, the anchor rib screw-in length is greater than 6mm, anchor rib, straight screw sleeve are positioned at iron plate bar homonymy, and the crotch of two anchor ribs is oppositely arranged; The circular hole that passes iron plate bar two ends with iron nail marks closely the assembly built-in fitting in the wooden form inboard;
(3) envelope mould after-pouring structural concrete treats that structure reaches the design strength form removal, the inboard concrete drawknot of anchor rib and wooden form, and finding out iron plate bar position is the position of pre-buried straight screw sleeve;
(4) extracting plastics in the straight screw sleeve protects plug and the sleeve hole is cleaned out;
(5) tension rib is screwed in two straight screw sleeve holes that are embedded in advance in concrete wall, the post with the straight thread ways of connecting, the tension rib screw-in length is greater than 6mm.
7. concrete wall, post tension rib assembly built-in fitting is characterized in that, are provided with an iron plate bar, two straight screw sleeves and two anchor ribs; Iron plate bar middle part is arranged with two preformed holes, and the preformed hole aperture is identical with the straight screw sleeve external diameter; Two straight screw sleeves are vertically set on iron plate bar one side of corresponding preformed hole respectively, and the thickness sum of the length of described straight screw sleeve and iron plate bar is thickness of protection tier; Described anchor rib passes the preformed hole on the described iron plate bar and is threaded with straight screw sleeve, and the anchor rib other end is provided with crotch, and the crotch of two anchor knot muscle is oppositely arranged.
8. concrete wall according to claim 7, post tension rib assembly built-in fitting is characterized in that, described iron plate bar and straight screw sleeve spot-welded on, the weld bead height between iron plate bar and the straight screw sleeve are 5mm.
9. concrete wall according to claim 7, post tension rib assembly built-in fitting, it is characterized in that, described iron plate bar is of a size of 200mm * 50mm * 3mm, and described anchor rib is that diameter phi 6mm, length are the plain bar of 120mm, and the length of the crotch at anchor rib two ends is 60mm.
10. concrete wall as claimed in claim 7, the post tension rib construction method of installation of assembly built-in fitting is characterized in that, may further comprise the steps:
(1) after the colligation of structure vertical reinforcement finishes, carries out the measurement and positioning unwrapping wire, emit wall column tension rib vertical and horizontal level and mark at vertical reinforcement;
(2) when Zhi Shuxiang steel form or wooden form, settle described assembly built-in fitting according to the mark position of tension rib on the cage of reinforcement, with the parallel placement with cage of reinforcement of described iron plate bar, two described straight screw sleeves are vertically set on iron plate bar one side respectively, filled in the straight screw sleeve one end tube hole and be close to the template inboard after plastics protect plug, the straight screw sleeve other end screws in described anchor rib, the anchor rib screw-in length is greater than 6mm, anchor rib passes the preformed hole on the iron plate bar and is threaded with straight screw sleeve, two anchor rib crotches are oppositely arranged, iron plate strip adoption spot-welded on or be arranged on the cage of reinforcement with the method for pricking the silk colligation;
(3) envelope mould after-pouring structural concrete, the thickness of concrete cover is that the thickness of reinforcement cover is length and the iron plate bar thickness sum of straight screw sleeve, treat that structure reaches the design strength form removal, the inboard concrete drawknot of anchor rib and template, finding out iron plate bar position is the position of pre-buried straight screw sleeve;
(4) extracting plastics in the straight screw sleeve protects plug and the sleeve hole is cleaned out;
(5) tension rib is screwed in two straight screw sleeve holes that are embedded in advance in concrete wall, the post with the straight thread ways of connecting, the tension rib screw-in length is greater than 6mm.
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