CN1779165A - Cavity structural member for hollow slab - Google Patents
Cavity structural member for hollow slab Download PDFInfo
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- CN1779165A CN1779165A CN 200410094883 CN200410094883A CN1779165A CN 1779165 A CN1779165 A CN 1779165A CN 200410094883 CN200410094883 CN 200410094883 CN 200410094883 A CN200410094883 A CN 200410094883A CN 1779165 A CN1779165 A CN 1779165A
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- hollow mould
- mould shell
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Abstract
A hollow component for hollow reinforced concrete consists of at least two pre-fabricated closed mould shells and a substrate. The mould shells are in parallel arranged on the substrate and integrated with it to form a whole body. Some rib cavities between the shells have at least one supporting part so as to have good strength and shockproof performance. The component can be manufactured easily at low cost, and reduce difference in lateral or longitudinal strength so as to have good mechanical performance. It can be used for hollow board, roof, wall, basement or hollow bridge beam, especially as hollow beamless roof.
Description
(1) technical field
The present invention relates to a kind of hollowcore slab Cavity structural member.
(2) background technology
Advantages such as at present, at present, the most precast hollow slab that adopts of the building of brick mix structure and reinforced concrete structure is as floor structure, and it is fast that this floor structure has speed of application, and cost is low.But, only use the cement mortar joint filling, thereby globality is poor, is unfavorable for antidetonation, and phenomenons such as slit cracking, infiltration often occur owing to firmly do not link between adjacent two precast hollow slabs.In order to address the above problem, a lot of building have adopted the method for Cast-in-place concrete floor (solid, hollow), though solved antidetonation and problems of crack, will use template in a large number during construction, have not only increased expense, and have slowed down speed of application, have prolonged the duration.Application number is " a kind of combination concrete rib floor structure " utility model patent of 00203695.9, it is made up of prefabricated plate, formwork, dark rib, upper plate, each prefabricated plate is placed at interval, on prefabricated plate, be fixed with formwork, be provided with dark rib between contiguous prefabricated thin plate or the formwork, upper plate covers on the formwork, and connects as one with dark rib.Though this floor structure can be saved a large amount of templates, accelerate construction progress, but because formwork is what to separate with prefabricated plate, its strength and stiffness are corresponding relatively poor, thereby the problem that exists formwork easily to break, simultaneously, formwork is fixed on and does not relate to concrete fixed form on the prefabricated plate, thereby fixed in place is difficult.And the patent No. is 93206310.1 shuttering member utility model patent, it constitutes hollow mould shell by sidewall and formwork upper plate and is connected to form totally-enclosed cavity polyhedral structure with lower shoe again, prefabricated ribs is arranged in it, during use member is placed on the supporter of floor gap, formation bonded to one another is whole between cast-in-place main rib, the shuttering member.When this kind member uses, be a kind of prefabricated noggin piece purely, the ribs in the die housing only is used to support formwork, can not participate in the whole stressed of superstructure.And when being applied in than the large spatial structure superstructure, its stress performance is also phase strain differential thereupon, do not have time rib between the cast-in-place main rib and connect, thereby make the size of main rib need the phase strain big, or the quantity of main rib increases, and causes material usage to increase, and cost increases.For this reason, the applicant has applied for that November 15 calendar year 2001 publication number is that CN1349028A, name are called " a kind of Comobined ribbed cavity member for spatial structure roof " patent of invention, its disclosed Cavity structural member includes formwork and structure base plate, hollow mould shell and structure base plate connect into integral body, it is characterized in that having 2 hollow mould shells on the structure base plate at least alternately, its side and structure base plate constitute at least one cast-in-place structural time rib die cavity, and other lateral surface of hollow mould shell constitutes the side template of cast-in-place structural main rib or beam or wall.Like this, because on the prior art basis, at least 2 hollow mould shells and at least 1 cast-in-place structural time rib die cavity (internal-rib die cavity) are arranged on the structure base plate, on the structure base plate, just can form cast-in-place structure time rib, fellowship structure base plate, main rib, upper plate stressed, form two-way main rib time rib force structure, problems of the prior art have not only been solved, but also overall performance, the anti-seismic performance of superstructure have further been improved, reduced the thickness of superstructure, alleviate dead load, reduced cost.But this Cavity structural member is in carrying, work progress, its structure base plate is prone to the phenomenon that fractures, thereby the breakage rate of Cavity structural member is big, carrying, construction inconvenience have increased construction cost, simultaneously, it manufactures trouble, cost is higher, therefore, develops a kind of novel hollowcore slab and has been urgent need with Cavity structural member.
(3) summary of the invention
The object of the present invention is to provide a kind of hollowcore slab Cavity structural member, characteristics such as have intensity height, non-frangibility, carrying, easy construction, production is simple, cost is low.
Solution of the present invention is on the basis of existing technology, comprise at least two hollow mould shells, structure base plate, hollow mould shell and structure base plate connect into integral body, the hollow mould shell spaced and parallel is arranged on the structure base plate, each other be spaced apart the internal-rib die cavity, it is characterized in that described internal-rib die cavity has at least one support draw piece to socket hollow mould shell, hollow mould shell is prefabricated enclosed cavity formwork.Like this, because the internal-rib die cavity has at least one support draw piece to socket hollow mould shell, thereby hollowcore slab is bigger with the intensity and the rigidity of Cavity structural member, shock resistance is better, its structure base plate is frangibility more not, carrying is more convenient with construction, and hollow mould shell is prefabricated enclosed cavity formwork, thus Cavity structural member manufacture simpler, can correspondingly make prefabricated enclosed cavity formwork earlier, perhaps make enclosed cavity formwork earlier, and then make the structure base plate, and the enclosed cavity formwork is arranged on formation integral body on the structure base plate by support draw piece disjunctor, its production efficiency height, product cost is low, thereby has reached purpose of the present invention; In addition, Cavity structural member also has characteristic of simple structure, is applicable to that hollowcore slab, hollow building cover, roof system, sole plate, body of wall and the hollow bridges of cast-in-situ reinforced concrete or prestressed reinforced concrete used, and is specially adapted to hollow arch without beam and uses.
Feature of the present invention also is on the described hollow mould shell fluted, and the groove on the different hollow mould shell is superimposed with the concrete bar in the groove on same straight line.Like this, after described Cavity structural member is applied in the Cast-in-place concrete floor, but superimposed concrete bar or pour into the member that Cast-in-place concrete in the groove has formed load in the groove is can participation structure stressed, strengthens the load-carrying construction system of hollowcore slab inside, improves the performance of floor.
Feature of the present invention also is have at least one longitudinal reinforcement to pass in the concrete bar of described groove, and passes the support draw piece in the internal-rib die cavity simultaneously.Like this, the intensity of concrete bar and rigidity have all obtained increasing substantially, and reinforcing bar also passes the support draw piece, will support draw piece and connect into integral body, and strengthen the intensity of support draw piece, make its not easy fracture.
Feature of the present invention also is to have on the described hollow mould shell at least one vertical groove, is superimposed with vertical concrete bar drawknot structure base plate in it.Like this, the bonding strength between hollow mould shell and the base plate has obtained reinforcement, and the two is difficult for division to make it, simultaneously, has also improved the anti-pressure ability of hollow mould shell, makes it not fragile.
Feature of the present invention also is in the described structure base plate longitudinal reinforcement is arranged.Like this, after in the structure base plate longitudinal reinforcement being arranged, the rupture strength of structure base plate and rigidity have all obtained significantly strengthening, make Cavity structural member carry, pile up, not fragile or fracture in the installation process.
Feature of the present invention also is the longitudinal reinforcement in the vertical reinforcing bar drawknot structure base plate of at least one on the described hollow mould shell.Like this, during longitudinal reinforcement in vertical reinforcing bar drawknot structure base plate is arranged on the hollow mould shell, hollow mould shell and structure base plate firm and reliable connection, make both pile up, transport, not easily separated, damaged in installation and the work progress, reduce the proportion of goods damageds of Cavity structural member significantly, reduced cost.
Feature of the present invention also is the vertical reinforcing bar of at least one on the described hollow mould shell longitudinal reinforcement in the concrete bar of the longitudinal reinforcement in the drawknot structure base plate and groove simultaneously.Like this, when vertical reinforcing bar being arranged simultaneously during the longitudinal reinforcement in the concrete bar of the longitudinal reinforcement in the drawknot structure base plate and groove on the hollow mould shell, hollow mould shell and structure base plate firm and reliable connection, make both pile up, transport, not easily separated, damaged in installation and the work progress, reduce the proportion of goods damageds of Cavity structural member significantly, reduced cost.
Feature of the present invention also is in the described hollow mould shell reinforce is arranged, and stretches out reinforce and be anchored in the structure base plate.Like this, reinforce is arranged in the hollow mould shell, and stretch out reinforce and be anchored in the structure base plate, the intensity and the rigidity of Cavity structural member are bigger, and globality is better.
Feature of the present invention is that also described at least three internal-rib die cavitys are parallel.Like this, when having at least three internal-rib die cavitys parallel on the Cavity structural member, after it was applied in the Cast-in-place concrete floor, Cast-in-place concrete is corresponding in above-mentioned internal-rib die cavity to have formed cast-in-place concrete hidden rib, can improve the supporting capacity of floor.
Feature of the present invention is that also the side of described hollow mould shell is superimposed with the concrete rib, and it is one that concrete rib and structure base plate link.Like this, the side of hollow mould shell is superimposed with the concrete rib, and it is one that concrete rib and structure base plate link, and can improve the overall performance of Cavity structural member greatly.
Feature of the present invention also is on the described hollow mould shell reinforcing rib to be arranged or/and in the hollow mould shell bracing boom is arranged or/and the floor of putting more energy in the hollow mould shell.Like this, having on the hollow mould shell has bracing boom in reinforcing rib or the hollow mould shell or/and the floor of putting more energy in the hollow mould shell, can strengthen the supporting capacity of Cavity structural member greatly, reduces the proportion of goods damageds of Cavity structural member in transportation, installation, work progress, save material, reduce the cost of hollowcore slab.
Feature of the present invention also be described reinforcing rib or/and bracing boom or/and reinforcing bar or steel mesh reinforcement are arranged in the floor of putting more energy into.Like this, reinforcing rib or/and bracing boom or/and be provided with reinforcing bar or steel mesh reinforcement in the floor of putting more energy into, can be strengthened reinforcing rib greatly bracing boom or/and the rigidity of the floor of putting more energy into and intensity, the corresponding mechanical property that can improve hollowcore slab greatly.
Feature of the present invention is that also described hollow mould shell is provided with at least one in projection, reinforcing bar filler strip, the pit.Like this, projection, reinforcing bar filler strip can accurately be located reinforcing bar, guarantee the pouring quality of hollowcore slab, and Cast-in-place concrete pours in the pit can corresponding formation Cast-in-place concrete load-carrying construction member, can improve the structural performance of hollowcore slab effectively.
Feature of the present invention is that also described hollow mould shell is provided with at least one in inner corner trim, chamfering or the arc angle.Like this, when Cavity structural member be applied to cast-in-place concrete cored in the time, Cast-in-place concrete pours in above-mentioned inner corner trim, chamfering or the arc angle, corresponding formation connects or the local Cast-in-place concrete member of strengthening, and can increase substantially the overall performance and the structural-load-carrying capacity of hollow mould shell.
Feature of the present invention also is to have on the described structure base plate at least one in reinforcing rib, bracing boom or the floor of putting more energy into.Like this, reinforcing rib, bracing boom or the floor of putting more energy into are arranged on the structure base plate, can improve the supporting capacity of Cavity structural member greatly, reduce the proportion of goods damageds of Cavity structural member in transportation, installation, work progress, save material, reduce the cost of hollowcore slab.
Feature of the present invention is that also the side shell that described structure base plate stretches out hollow mould shell constitutes toss outward.Like this, when member was applied in the cast-in-situ concrete hollow floor, outwardly directed toss can replace construction formwork, reduced the template loss, reduced material cost, can save the template installation procedure simultaneously, accelerated speed of application, improved efficiency of construction.
Feature of the present invention is that also described hollow mould shell is fluted, is superimposed with the superimposed reinforcing bar in back in the groove.Like this, Cast-in-place concrete can form Cast-in-place concrete muscle, piece, bar, rod member or pier in groove, and the Cast-in-place concrete that has constituted inner local reinforcement in the cast-in-place hollow slab adds competent structure, thereby makes structure more reasonable.
Feature of the present invention is that also described structure base plate is the structure base plate of concrete or steel bar concrete or steel mesh reinforcement concrete.Like this, the variation of the material of structure base plate can be satisfied the needs of different situations.
Feature of the present invention is that also described hollow mould shell is the hollow mould shell of cement mortar fiber or fibrous mesh cloth or gauze wire cloth making.Like this, the variation of the material of hollow mould shell can be satisfied the needs of different situations.
Feature of the present invention is that also described Cavity structural member is provided with the carrying suspender member.The carrying suspender member can be handle, suspension hook, suspension ring or other device.Like this, can very easily member be piled up, transport, lift and construct, reduce the work difficulty and the working strength of above-mentioned operation, help improving efficiency of construction, reduce construction cost.
(4) description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is the structural representation of the embodiment of the invention 2.
Fig. 3 is the structural representation of the embodiment of the invention 3.
Fig. 4 is the structural representation of the embodiment of the invention 4.
Fig. 5 is the structural representation of the embodiment of the invention 5.
Fig. 6 is the structural representation of the embodiment of the invention 6.
Fig. 7 is the structural representation of the embodiment of the invention 7.
Fig. 8 is the structural representation of the embodiment of the invention 8.
Fig. 9 is the structural representation of the embodiment of the invention 9.
Figure 10 is the structural representation of the embodiment of the invention 10.
Figure 11 is the structural representation of the embodiment of the invention 11.
Figure 12 is the structural representation of the embodiment of the invention 12.
(5) specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
The present invention as shown in drawings, comprise at least two hollow mould shells 1, structure base plate 2, hollow mould shell 1 connects into integral body with structure base plate 2, hollow mould shell 1 spaced and parallel is arranged on the structure base plate 2, each other be spaced apart internal-rib die cavity 3, it is characterized in that described internal-rib die cavity 3 has at least one support draw piece 4 to socket hollow mould shell 1, hollow mould shell 1 is prefabricated hollow mould shell.In each accompanying drawing, 1 is hollow mould shell, and 2 is the structure base plate, and 3 is the internal-rib die cavity, and 4 in following each accompanying drawing of support draw piece, numbers identically, and its explanation is identical.As shown in Figure 1, have support draw piece 4 to socket hollow mould shell 1 in its described internal-rib die cavity 3, hollow mould shell 1 is prefabricated enclosed cavity formwork.
Feature of the present invention also is on the described hollow mould shell 1 fluted 5, and the groove on the different hollow mould shell 15 is superimposed with concrete bar 6 in the groove 5 on same straight line.As shown in Figure 2, fluted 5 on its described hollow mould shell 1, and the groove on the different hollow mould shell 15 is superimposed with concrete bar 6 in the groove 5 on same straight line.
Feature of the present invention also is have at least one longitudinal reinforcement 7 to pass in the concrete bar 6 of described groove 5, and passes the support draw piece 4 in the internal-rib die cavity 3 simultaneously.As shown in Figure 2, there is longitudinal reinforcement 7 to pass in the concrete bar 6 of its described groove 5, and passes the support draw piece 4 in the internal-rib die cavity 3 simultaneously.
Feature of the present invention also is to have on the described hollow mould shell 1 at least one vertical groove 5, is superimposed with vertical concrete bar 6 drawknot structure base plates 2 in it.As shown in Figure 3, on its described hollow mould shell 1 vertical groove 5 is arranged, be superimposed with vertical concrete bar 6 drawknot structure base plates 2 in it.
Feature of the present invention also is in the described structure base plate 2 longitudinal reinforcement 7 is arranged.As shown in Figure 3, in its described structure base plate 2 longitudinal reinforcement 7 is arranged.
Feature of the present invention also is the longitudinal reinforcement 7 at least one vertical reinforcing bar 7 drawknot structure base plates 2 on the described hollow mould shell 1.As shown in Figure 4, the longitudinal reinforcement 7 in the vertical reinforcing bar 7 drawknot structure base plates 2 on its described hollow mould shell 1.
Feature of the present invention also is at least one vertical reinforcing bar 7 longitudinal reinforcement 7 in the concrete bar 6 of the longitudinal reinforcement 7 in the drawknot structure base plate 2 and groove 5 simultaneously on the described hollow mould shell 1.As shown in Figure 4, the longitudinal reinforcement 7 in the concrete bar 6 of longitudinal reinforcement 7 in 7 while of the vertical reinforcing bar on its described hollow mould shell 1 drawknot structure base plate 2 and groove 5.
Feature of the present invention also is in the described hollow mould shell 1 reinforce 8 is arranged, and stretches out reinforce 8 and be anchored in the structure base plate 2.As shown in Figure 5, in its described hollow mould shell 1 reinforce 8 is arranged, and stretch out reinforce 8 and be anchored in the structure base plate 2.
Feature of the present invention is that also described at least three internal-rib die cavitys 3 are parallel.As shown in Figure 5, its described many internal-rib die cavitys 3 are parallel
Feature of the present invention is that also the side of described hollow mould shell 1 is superimposed with concrete rib 9, and it is one that concrete rib 9 links with structure base plate 2.As shown in Figure 6, the side of its described hollow mould shell 1 is superimposed with concrete rib 9, and it is one that concrete rib 9 links with structure base plate 2.
Feature of the present invention also is on the described hollow mould shell 1 reinforcing rib 10 to be arranged or/and in the hollow mould shell 1 bracing boom 11 is arranged or/and the floor 12 of putting more energy in the hollow mould shell 1.As shown in Figure 7, on its described hollow mould shell 1 reinforcing rib 10 is arranged, the bracing boom 11 and the floor 12 of putting more energy into are arranged in the hollow mould shell 1.
Feature of the present invention also be described reinforcing rib 10 or/and bracing boom 11 or/and reinforcing bar 7 or steel mesh reinforcement 13 are arranged in the floor 12 of putting more energy into.As shown in Figure 7, in its described bracing boom 11 reinforcing bar 7 is arranged, in the floor 12 of putting more energy into steel mesh reinforcement 13 is arranged.
Feature of the present invention is that also described hollow mould shell 1 is provided with at least one in projection 14, reinforcing bar filler strip 15, the pit 16.As shown in Figure 8, also be provided with projection 14, reinforcing bar filler strip 15 and pit 16 simultaneously on its described hollow mould shell 1.
Feature of the present invention is that also described hollow mould shell 1 is provided with at least one in inner corner trim 17, chamfering 18 or the arc angle 19.As shown in Figure 9, also be provided with inner corner trim 17, chamfering 18 and arc angle 19 simultaneously on its described hollow mould shell 1.
Feature of the present invention also is to have on the described structure base plate 2 at least one in reinforcing rib 10, bracing boom 11 or the floor 12 of putting more energy into.As shown in Figure 8, its described structure base plate 2 is provided with reinforcing rib 10.
Feature of the present invention is that also the side shell that described structure base plate 2 stretches out hollow mould shell 1 constitutes toss 20 outward.As shown in figure 10, its described structure base plate 2 side shell of stretching out hollow mould shell 1 constitutes toss 20 outward.
Feature of the present invention is that also described hollow mould shell 1 is fluted 5, is superimposed with the superimposed reinforcing bar 7 in back in the groove 5.As shown in figure 11, its described hollow mould shell 1 is provided with groove 5, is superimposed with the superimposed reinforcing bar 7 in back in the groove 5.
Feature of the present invention also is the structure base plate of described structure base plate 2 for concrete or steel bar concrete or steel mesh reinforcement concrete.As shown in figure 12, its described structure base plate 2 is a concrete structure base plate.
Feature of the present invention also is the hollow mould shell of described hollow mould shell 1 for cement mortar fiber or fibrous mesh cloth or gauze wire cloth making.As shown in figure 12, its described hollow mould shell 1 is the hollow mould shell of cement mortar gauze wire cloth making.
Feature of the present invention is that also described Cavity structural member is provided with carrying suspender member 21.As shown in figure 12, its described Cavity structural member is provided with carrying suspender member 21.
During the invention process, can be earlier make prefabricated enclosed cavity formwork 1 with cement mortar and fibrous mesh cloth or gauze wire cloth, perhaps make hollow mould shell 1 earlier by support draw piece 4 disjunctors, include reinforcing bar or steel mesh reinforcement etc. with cement mortar or concrete then and make structure base plate 2 again, and the prefabricated hollow mould shell 1 that will be provided with support draw piece 4 is arranged on formation integral body on the structure base plate 2, after treating its setting and harden, maintenance promptly gets the hollowcore slab Cavity structural member to stipulating the length of time.
Claims (10)
1, a kind of hollowcore slab Cavity structural member, comprise at least two hollow mould shells (1), structure base plate (2), hollow mould shell (1) connects into integral body with structure base plate (2), hollow mould shell (1) spaced and parallel is arranged on the structure base plate (2), each other be spaced apart internal-rib die cavity (3), it is characterized in that described internal-rib die cavity (3) has at least one support draw piece (4) to socket hollow mould shell (1), hollow mould shell (1) is prefabricated enclosed cavity formwork.
2, hollowcore slab Cavity structural member according to claim 1 it is characterized in that described hollow mould shell (1) upward fluted (5), and the groove (5) on the different hollow mould shell (1) is superimposed with concrete bar (6) in the groove (5) on same straight line.
3, hollowcore slab Cavity structural member according to claim 2 is characterized in that having at least one longitudinal reinforcement (7) to pass in the concrete bar (6) of described groove (5), and passes the support draw piece (4) in the internal-rib die cavity (3) simultaneously.
4, hollowcore slab Cavity structural member according to claim 3 is characterized in that at least one vertical groove (5) is arranged on the described hollow mould shell (1), is superimposed with vertical concrete bar (6) drawknot structure base plate (2) in it.
5, hollowcore slab Cavity structural member according to claim 4 is characterized in that longitudinal reinforcement (7) is arranged in the described structure base plate (2).
6, hollowcore slab Cavity structural member according to claim 5 is characterized in that the longitudinal reinforcement (7) at least one vertical reinforcing bar (7) the drawknot structure base plate (2) on the described hollow mould shell (1).
7, hollowcore slab Cavity structural member according to claim 6 is characterized in that at least one vertical reinforcing bar (7) the simultaneously longitudinal reinforcement (7) in the drawknot structure base plate (2) and the interior longitudinal reinforcement (7) of concrete bar (6) of groove (5) on the described hollow mould shell (1).
8, hollowcore slab Cavity structural member according to claim 1 is characterized in that reinforce (8) is arranged in the described hollow mould shell (1), and stretches out reinforce (8) and be anchored in the structure base plate (2); Perhaps at least three internal-rib die cavitys (3) are parallel; Perhaps the side of hollow mould shell (1) is superimposed with concrete rib (9), and it is one that concrete rib (9) links with structure base plate (2); Perhaps on the hollow mould shell (1) reinforcing rib (10) is arranged or/and in the hollow mould shell (1) bracing boom (11) is arranged or/and the floor (12) of putting more energy in the hollow mould shell (1); Perhaps reinforcing rib (10) or/and bracing boom (11) or/and reinforcing bar (7) or steel mesh reinforcement (13) are arranged in the floor of putting more energy into (12).
9, hollowcore slab Cavity structural member according to claim 1 is characterized in that described hollow mould shell (1) is provided with at least one in projection (14), reinforcing bar filler strip (15), the pit (16); Perhaps hollow mould shell (1) is provided with at least one in inner corner trim (17), chamfering (18) or the arc angle (19); In reinforcing rib (10), bracing boom (11) or the floor of putting more energy into (12) at least one perhaps arranged on the structure base plate (2); Perhaps structure base plate (2) the side shell that stretches out hollow mould shell (1) constitutes toss (20) outward.
10, hollowcore slab Cavity structural member according to claim 1 is characterized in that described hollow mould shell (1) fluted (5), is superimposed with back superimposed reinforcing bar (7) in the groove (5); Perhaps structure base plate (2) is the structure base plate of concrete or steel bar concrete or steel mesh reinforcement concrete; Perhaps hollow mould shell (1) is the hollow mould shell of cement mortar fiber or fibrous mesh cloth or gauze wire cloth making; Perhaps Cavity structural member is provided with carrying suspender member (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100948833A CN100467786C (en) | 2004-11-19 | 2004-11-19 | Cavity structural member for hollow slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100948833A CN100467786C (en) | 2004-11-19 | 2004-11-19 | Cavity structural member for hollow slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1779165A true CN1779165A (en) | 2006-05-31 |
| CN100467786C CN100467786C (en) | 2009-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100948833A Expired - Fee Related CN100467786C (en) | 2004-11-19 | 2004-11-19 | Cavity structural member for hollow slab |
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| Country | Link |
|---|---|
| CN (1) | CN100467786C (en) |
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- 2004-11-19 CN CNB2004100948833A patent/CN100467786C/en not_active Expired - Fee Related
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| CN100467786C (en) | 2009-03-11 |
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Effective date of registration: 20101104 Address after: 410205, Hunan Changsha Changsha hi tech Development Zone, Yuelu District Road, No. 8 star industry base Patentee after: Hunan Qiuzeyou Patent Strategy Planning Co., Ltd. Address before: 410011 Hunan province Changsha Furong Road two section 59 Suncheon City 28 floor Patentee before: Qiu Zeyou |
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Granted publication date: 20090311 Termination date: 20131119 |