CN103382741A - Fixed connection structure of precast slab - Google Patents
Fixed connection structure of precast slab Download PDFInfo
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- CN103382741A CN103382741A CN2013102646150A CN201310264615A CN103382741A CN 103382741 A CN103382741 A CN 103382741A CN 2013102646150 A CN2013102646150 A CN 2013102646150A CN 201310264615 A CN201310264615 A CN 201310264615A CN 103382741 A CN103382741 A CN 103382741A
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- 230000008878 coupling Effects 0.000 claims description 53
- 238000010168 coupling process Methods 0.000 claims description 53
- 238000005859 coupling reaction Methods 0.000 claims description 53
- 238000009434 installation Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
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Abstract
The invention discloses a fixed connection structure of a precast slab. The fixed connection structure comprises a set of connecting components, wherein the set of connecting components comprises a center square pipe, a square pipe arranged outside the center square pipe in a sleeving way, and a connecting profile; the center square pipe and the square pipe are fixedly connected together in the way that connecting bolts are enabled to sequentially penetrate through a first side wall of the square pipe, a first side wall of the center square pipe, a second side wall of the square pipe and a second side wall of the center square pipe to be matched with lock nuts; the connecting profile is fixedly connected onto the at least one side wall of the square pipe; side walls, which are not contacted with the square pipe, of the connecting profile, form U-shaped connecting frames, and the U-shaped connecting frames are inserted into a left U-shaped frame or a right U-shaped frame of the precast slab, and fixedly connected with the left U-shaped frame or the right U-shaped frame. Through the fixed connection structure provided by the invention, precast slabs can be connected conveniently according to various architectural layout requirements.
Description
Technical field
The invention belongs to the syndeton of using in building field, relate in particular to a kind of fixed connection structure of precast plate.
Background technology
Application publication number is CN103015623A, Shen Qing Publication day to be that the patent documentation on April 3rd, 2013 discloses a kind of precast plate and fixed installation structure thereof, precast plate wherein has U-shaped left and right frame, therefore, precast plate can be by the various architectural compositions that are connected to form between its left and right frame and coupling assembling.
Summary of the invention
One object of the present invention is to provide a kind of coupling assembling for precast plate is installed, and this coupling assembling is convenient to form multiple architectural composition by precast plate.
the technical solution used in the present invention is: a kind of fixed connection structure of precast plate, comprise a cover coupling assembling, described coupling assembling comprises the center square tube, be set in described center square tube outer square tube and connection profile, center square tube and square tube are by making connecting bolt pass successively the first side wall of square tube, the first side wall of center square tube, the second sidewall of square tube and the second sidewall of center square tube coordinate with locking nut and are fixed together, be fixed with described connection profile at least one sidewall of described square tube, each sidewall that does not contact with square tube of described connection profile forms U-shaped connection box, each connection box inserts in the U-shaped left side or left frame of precast plate, and be fixed together with a described left side or left frame.
Preferably, be fixed with described connection profile at least two sidewalls of described square tube, form the corner structure of at least one 90 degree between the connection box of each connection profile, make described coupling assembling have cross section and be the contour shape of " L " type, T-shape or " ten " font; The installation through hole that described square tube and the described connecting bolt of confession on the square tube of center penetrate communicates with the inner chamber of corresponding connection profile.
Preferably, with the first and second sidewalls of square tube over against the sidewall of at least one connection profile on be provided with for described connecting bolt in it enters corresponding connection profile fully to complete the through hole that penetrates of assembling between square tube and center square tube.
Preferably, the described connection profile that is connected on two the 3rd and/or the 4th relative sidewalls of described square tube makes described coupling assembling have cross section and is the contour shape of " one " font.
Preferably, described connection profile is the C section bar, and described connection profile is fixedly connected with square tube by its opening edge.
Preferably, described connection box and a described left side or left frame coordinate with the fixing and locking nut by two sidewalls that make set bolt pass two sidewalls of a left side or left frame and connection box and are fixed together.
Preferably, the sidewall of described connection profile and square tube welds together.
Another object of the present invention is to provide a kind of and above-mentioned fixed connection structure based on the another kind of fixed connection structure of same idea.
The technical solution used in the present invention is: a kind of fixed connection structure of precast plate, comprise one group of coupling assembling, described coupling assembling comprises the suitable center shape tube of contour shape and is sheathed on the outer shape tube of center shape tube, described shape tube has cross section and is the contour shape of " L " type, T-shape or " ten " font, to form at least two cross sections as U-shaped connection box, form the corner structure of at least one 90 degree between each connection box; Described connection box inserts in the U-shaped left side or left frame of precast plate, and by securing member with a described left side or left frame, inserts connection box in left and right frame and the embedding correspondence connection box inner bulge of center shape tube and is fixed together.
Preferably, by set bolt pass described left and right frame, the corresponding connection box inner bulge of embedding that inserts connection box in described left and right frame and center shape tube coordinates with the fixing and locking nut and is fixed together.
The 3rd purpose of the present invention is to provide a kind of variant embodiment of the second fixed connection structure.
The technical solution used in the present invention is: a kind of fixed connection structure of precast plate, comprise one group of coupling assembling, described coupling assembling comprises the square tube that the center square tube is outer with being sheathed on the center square tube, and it is U-shaped connection box that the two ends respect to one another of described square tube form cross section; Described connection box inserts in the U-shaped left side or left frame of precast plate, passes described left and right frame, inserts connection box in described left and right frame and center square tube and coordinate with the fixing and locking nut and be fixed together by set bolt.
Beneficial effect of the present invention is: by fixed connection structure of the present invention, can form various architectural compositions by precast plate easily, even can carry out easily precast plate in the turn round connection at layout place of corner.
Description of drawings
Fig. 1 shows a kind of enforcement structure according to the connection profile of the fixed connection structure of precast plate of the present invention;
Fig. 2 shows the first embodiment according to coupling assembling of the present invention;
Fig. 3 is the top view that shows the fixed connection structure between precast plate and coupling assembling shown in Figure 2;
Fig. 4 shows the second embodiment according to coupling assembling of the present invention;
Fig. 5 is the top view that shows the fixed connection structure between precast plate and coupling assembling shown in Figure 4;
Fig. 6 shows according to the 3rd embodiment of coupling assembling of the present invention and the fixed connection structure between precast plate;
Fig. 7 is the top view of Fig. 6;
Fig. 8 shows the 3rd embodiment according to coupling assembling of the present invention;
Fig. 9 is the top view of Fig. 8;
Figure 10 is the top view that shows the fixed connection structure between coupling assembling shown in precast plate and Fig. 8 and 9;
Figure 11 shows the 4th embodiment according to coupling assembling of the present invention;
Figure 12 is the top view of Figure 11;
Figure 13 shows the fixed connection structure between coupling assembling shown in precast plate and Figure 11 and 12;
Figure 14 is the top view of Figure 13;
Figure 15 shows a kind of enforcement structure of the shape tube of the another kind of coupling assembling of equivalent deformation according to the present invention;
Figure 16 is the top view of Figure 15;
Figure 17 shows the coupling assembling that comprises shape tube shown in Figure 15 and 16;
The multilayer syndeton of Figure 18 for being consisted of by shape tube shown in Figure 15;
Figure 19 shows the third coupling assembling of the equivalent deformation according to the present invention;
Figure 20 is the top view that shows the fixed connection structure between precast plate and coupling assembling shown in Figure 19.
The specific embodiment
The precast plate that the present invention relates to comprises light steel frame (perhaps being referred to as lightweight steel frame) and forward and backward sheet material, this light steel frame comprises left and right frame and the upper and lower frame that encloses formation one square box that is connected together, the cross section of left and right frame is U-shaped, be that left and right frame is U-shaped steel, the U-shaped notch of left and right frame is respectively towards left and right setting, make U-shaped notch that precast plate can be by left and right side and be used for fixedly the structural element of precast plate (being coupling assembling of the present invention, the especially firm structural element of this structural element) and peg graft.
As shown in Fig. 1 to 14, the coupling assembling of precast plate of the present invention comprises center square tube 3, is set in center square tube 3 outer square tube 2 and at least one connection profile 1, every connection profile 1 correspondence is for example to be fixedly connected with by the mode of welding with a sidewall of square tube 2, but below provides the connection profile 1 of three kinds of choice for uses.
The first: connection profile equally is all U-shaped pipe with left and right frame, and connection profile is for example to be fixed together by the mode of welding by the opening edge of U-shaped pipe along the sidewall with square tube, and wherein, connection profile itself namely forms connection box.
the second: as shown in Figure 3, because square tube 2 has chamfering usually at the incline place that connects between two sidewalls, therefore, for the ease of being connected of 2 of connection profile and square tubes, as shown in Figures 1 to 3, this connection profile 1 is the C section bar, connection profile 1 comprises backboard 11, through two vertical edges of backboard 11 along two side plates 12 that extend in the same way along the direction vertical with backboard 11 and respectively through the vertical edges of two side plates 12 along two bending plates vertical with side plate 13 of extension in opposite directions, connection profile 1 is by the opening edge edge of C section bar, the part that is bending plate 13 is for example to be fixedly connected with by the mode of welding with the sidewall of square tube 2, make backboard 11 and two side plates 12 surround connection box.Connection profile in various embodiment in accompanying drawing has all adopted the C section bar.
The third: connection profile is all square tube, and connection profile is for example to be fixed together by the mode of welding by a sidewall of one sidewall and square tube 2, and three other sidewalls of connection profile consist of connection boxes.For embodiment 3, the installation through hole that arranges on square tube 2 also will run through the sidewall of the connection profile that the sidewall of through hole being installed with arranging of square tube 2 is connected, and then the installation through hole is communicated with the inner chamber of corresponding connection profile.
Embodiment 1: as shown in Fig. 2 and 3, this coupling assembling comprises a center square tube 3, is sheathed on center square tube 3 outer square tube 2 and a connection profile 1, connecting bolt 4 passes successively the first side wall of square tube 2, the first side wall of center square tube 3, the second sidewall of square tube 2 and the second sidewall of center square tube 3 and coordinates (first, second sidewall that hence one can see that both is sidewall respect to one another) with locking nut, and then square tube 2 and center square tube 3 are fixed together.connection profile 1 is fixedly connected with the 3rd or the 4th sidewall that the installation through hole that passes for connecting bolt 4 is not set of square tube 2, forming cross section is the contour shape of " one " font, it is U-shaped connection box that this coupling assembling has a cross section, can be fixedly connected with a precast plate by this connection box, this connection box inserts the left side of precast plate, in right (expression is left or right) frame A, pass a left side by set bolt 5, left frame A and connection box coordinate and are fixed together with precast plate with the fixing and locking nut, to this, as shown in Figure 1, on two sidewalls respect to one another of connection profile, (for example two of the C section bar side plate 12 on) will arrange the connecting through hole 16 that passes for set bolt 5, the left side of precast plate, the through hole that connects with connecting through hole 16 also will be set on left frame A.
embodiment 2: as shown in Figure 4 and 5, this coupling assembling comprises a center square tube 3, be sheathed on center square tube 3 outer square tube 2 and two connection profiles 1, connecting bolt 4 passes the first side wall of square tube 2 successively, the first side wall of center square tube 3, the second sidewall of square tube 2 and the second sidewall of center square tube 3 coordinate with locking nut, and then square tube 2 and center square tube 3 are fixed together, two connection profiles 1 are fixedly connected with the third and fourth sidewall of square tube 2 respectively, forming cross section is the contour shape of " one " font, it is U-shaped connection box that this kind coupling assembling has two each and every one cross sections, can be fixedly connected with two precast plates by two connection boxes, each connection box inserts the left side of corresponding precast plate, in right (expression is left or right) frame A, pass a left side by set bolt 5, left frame A and connection box and fixing and locking nut coordinate and are fixed together with corresponding precast plate.
Embodiment 3: as shown in Fig. 6 and 7, this coupling assembling comprises a center square tube 3, is sheathed on center square tube 3 outer square tube 2 and two connection profiles 1, connecting bolt 4 passes successively the first side wall of square tube 2, the first side wall of center square tube 3, the second sidewall of square tube 2 and the second sidewall of center square tube 3 and coordinates with locking nut, and then square tube 2 and center square tube 3 are fixed together, two connection profiles 1 are fixedly connected with two of square tube 2 adjacent sidewalls respectively, the contour shape of " L " type of formation namely forms one 90 corner structure of spending.It is U-shaped connection box that this kind coupling assembling has two cross sections, can make two precast plates be 90 degree by two connection boxes and connect, the connection between the left and right frame of connection box and precast plate and embodiment 1,2 identical.For embodiment 3, wherein need on the sidewall relative with above installation through hole of a connection profile to arrange with install that through hole connects as shown in Figure 1 penetrate through hole 15, like this, operating personnel can be with connecting bolt 4 by the penetrating through hole 15 and penetrate in corresponding installation through hole of connection profile 1, and complete locking nut at the opposite side that connection profile 1 is not set and coordinate with the locking of 4 of connecting bolts.
Embodiment 4: as shown in Figures 8 to 10, this coupling assembling comprises a center square tube 3, is sheathed on center square tube 3 outer square tube 2 and three connection profiles 1, connecting bolt 4 passes successively the first side wall of square tube 2, the first side wall of center square tube 3, the second sidewall of square tube 2 and the second sidewall of center square tube 3 and coordinates with locking nut, and then square tube 2 and center square tube 3 are fixed together, three connection profiles 1 respectively are fixedly connected with a sidewall of square tube 2, forming cross section is the contour shape of T-shape, namely forms the corner structure of two 90 degree.It is U-shaped connection box that this kind coupling assembling has three cross sections, can make three precast plates be T-shape by three connection boxes and connect, the connection between the left and right frame A of connection box and precast plate and embodiment 1,2 identical.If the installation through hole of square tube 2 is arranged on a pair of one of them sidewall and does not arrange on the sidewall of connection profile 1, the situation that penetrates through hole is set identical with embodiment 3; If the installation through hole of square tube 2 is arranged on a pair of sidewall that is provided with connection profile 1, will with install through hole over against the sidewall of at least one connection profile 1 on arrange with each installation through hole corresponding run through respectively penetrate through hole 15.
Embodiment 5: as shown in Figure 11 to 14, this coupling assembling comprises a center square tube 3, is sheathed on center square tube 3 outer square tube 2 and four connection profiles 1, connecting bolt 4 passes successively the first side wall of square tube 2, the first side wall of center square tube 3, the second sidewall of square tube 2 and the second sidewall of center square tube 3 and coordinates with locking nut, and then square tube 2 and center square tube 3 are fixed together, four connection profiles 1 respectively are fixedly connected with a sidewall of square tube 2, forming cross section is the contour shape of " ten " font, namely forms the corner structure of four 90 degree.It is U-shaped connection box that this kind coupling assembling has four each and every one cross sections, by four connection boxes, four precast plate intervals, 90 degree is linked together, the connection between the left and right frame of connection box and precast plate and embodiment 1,2 identical.For embodiment 5, similar with the second situation of embodiment 2, with install through hole over against the sidewall of at least one connection profile 1 on to arrange with each install through hole corresponding run through respectively penetrate through hole 15.
Also can be connected by self-tapping screw between the left and right frame A of the connection box in embodiment 1 to 5 and precast plate, like this, just need not to arrange connecting through hole 16 on connection profile 1.
In addition, above each embodiment all can be by arranging up and down the mutual grafting formation multilayer coupling assembling of a plurality of square tubes 2 of arranging and 3 of a plurality of centers square tubes, connect so that but the precast plate in the vertical direction carries out multilayer, and the structure of the coupling assembling of every layer can be according to any structure in the above embodiment 1 to 5 of architectural composition selection of reality.
Based on above inventive concept, as shown in figure 17, this coupling assembling also consists of for the shape tube 6 that become above-mentioned contour shape by a circumference of cannon bone and with center shape tube 7 that shape tube has a suitable contour shape, shape tube 6 as shown in Figure 15 and 16 is equivalent deformations of corresponding embodiment 4, it has the contour shape that cross section is T-shape, form three connection boxes 61, form the corner structure of two 90 degree between connection box 61.
For this kind coupling assembling, can be fixedly connected with by self-tapping screw between protuberance in the connection box 61 that is formed by shape tube 6, the embedding connection box of center shape tube 7 61 and the left and right frame A of precast plate, be connected and fixed mode for this kind, need not to arrange any through hole on coupling assembling and left and right frame A.this kind coupling assembling also can adopt the structure that set bolt 9 connects of passing through as shown in figure 18, namely pass by set bolt 9 and state a left side or left frame A, insert left, connection box 61 in left frame A and the protuberance that embeds in corresponding connection box are fixed together, be on two relative sidewalls of connection box 61, on two relative sidewalls of protuberance and the left side of precast plate, all need to arrange the through hole that connects each other that passes for set bolt 9 on two relative sidewalls of left frame A, so that set bolt 9 passes a left side in turn, the sidewall of left frame A, a sidewall of connection box 61, a sidewall of protuberance, another sidewall of protuberance, another sidewall and the left side of connection box 61, another sidewall of left frame A, be locked by the fixing and locking nut again.
As shown in Figure 19 and 20, above this shape tube 6 and center shape tube 7 also can be common square tube, and it is U-shaped connection box that the two ends respect to one another of this square tube consist of two cross sections.
As shown in figure 18, can form the multilayer coupling assembling by the mutual grafting that 7 of a plurality of shape tubes 6 of arranging and center shape tubes are set up and down, connect so that but the precast plate in the vertical direction carries out multilayer, the coupling assembling shown in Figure 19 and 20 can use in conjunction with the coupling assembling of Fig. 1 to Figure 14 and form sandwich construction in addition.
The above only is the better embodiment of the present invention, is not to limit practical range of the present invention, and the equivalence of in every case doing in protection scope of the present invention changes and modifies, and all should think to have fallen in protection scope of the present invention.
Claims (10)
1. the fixed connection structure of a precast plate, it is characterized in that: comprise a cover coupling assembling, described coupling assembling comprises the center square tube, be set in described center square tube outer square tube and connection profile, center square tube and square tube are by making connecting bolt pass successively the first side wall of square tube, the first side wall of center square tube, the second sidewall of square tube and the second sidewall of center square tube coordinate with locking nut and are fixed together, be fixed with described connection profile at least one sidewall of described square tube, each sidewall that does not contact with square tube of described connection profile forms U-shaped connection box, each connection box inserts in the U-shaped left side or left frame of precast plate, and be fixed together with a described left side or left frame.
2. fixed connection structure according to claim 1, it is characterized in that: be fixed with described connection profile at least two sidewalls of described square tube, form the corner structure of at least one 90 degree between the connection box of each connection profile, make described coupling assembling have cross section and be the contour shape of " L " type, T-shape or " ten " font; The installation through hole that described square tube and the described connecting bolt of confession on the square tube of center penetrate communicates with the inner chamber of corresponding connection profile.
3. fixed connection structure according to claim 2 is characterized in that: with the first and second sidewalls of square tube over against the sidewall of at least one connection profile on be provided with for described connecting bolt in it enters corresponding connection profile fully to complete the through hole that penetrates of assembling between square tube and center square tube.
4. fixed connection structure according to claim 1 is characterized in that: the described connection profile that is connected on two the 3rd and/or the 4th relative sidewalls of described square tube makes described coupling assembling have cross section and is the contour shape of " one " font.
5. the described fixed connection structure of any one according to claim 1 to 4, it is characterized in that: described connection profile is the C section bar, and described connection profile is fixedly connected with square tube by its opening edge.
6. the described fixed connection structure of any one according to claim 1 to 4 is characterized in that: described connection box and a described left side or left frame coordinate with the fixing and locking nut by two sidewalls that make set bolt pass two sidewalls of a left side or left frame and connection box and are fixed together.
7. the described fixed connection structure of any one according to claim 1 to 4, it is characterized in that: the sidewall of described connection profile and square tube welds together.
8. the fixed connection structure of a precast plate, it is characterized in that: comprise one group of coupling assembling, described coupling assembling comprises the suitable center shape tube of contour shape and is sheathed on the outer shape tube of center shape tube, described shape tube has cross section and is the contour shape of " L " type, T-shape or " ten " font, to form at least two cross sections as U-shaped connection box, form the corner structure of at least one 90 degree between each connection box; Described connection box inserts in the U-shaped left side or left frame of precast plate, and by securing member with a described left side or left frame, inserts connection box in left and right frame and the embedding correspondence connection box inner bulge of center shape tube and is fixed together.
9. fixed connection structure according to claim 8 is characterized in that: by set bolt pass described left and right frame, the corresponding connection box inner bulge of embedding that inserts connection box in described left and right frame and center shape tube coordinates with the fixing and locking nut and is fixed together.
10. the fixed connection structure of a precast plate is characterized in that: comprise one group of coupling assembling, described coupling assembling comprises the center square tube and is sheathed on the outer square tube of center square tube, and it is U-shaped connection box that the two ends respect to one another of described square tube form cross section; Described connection box inserts in the U-shaped left side or left frame of precast plate, passes described left and right frame, inserts connection box in described left and right frame and center square tube and coordinate with the fixing and locking nut and be fixed together by set bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310264615.0A CN103382741B (en) | 2013-06-27 | 2013-06-27 | A kind of fixed connection structure of prefabricated board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310264615.0A CN103382741B (en) | 2013-06-27 | 2013-06-27 | A kind of fixed connection structure of prefabricated board |
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| Publication Number | Publication Date |
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| CN103382741A true CN103382741A (en) | 2013-11-06 |
| CN103382741B CN103382741B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310264615.0A Active CN103382741B (en) | 2013-06-27 | 2013-06-27 | A kind of fixed connection structure of prefabricated board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108779636A (en) * | 2016-02-22 | 2018-11-09 | 威格建筑***有限责任公司 | Stacked structure steel wall truss |
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| CN103015623A (en) * | 2013-01-07 | 2013-04-03 | 张建忠 | Prefabricated slab and fixed mounting structure thereof |
| CN203347026U (en) * | 2013-06-27 | 2013-12-18 | 张建忠 | Fixed connection structure of precast slabs |
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2013
- 2013-06-27 CN CN201310264615.0A patent/CN103382741B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05106325A (en) * | 1991-10-15 | 1993-04-27 | Sekisui House Ltd | Inner panel connecting structure at outside corner |
| CN2252833Y (en) * | 1995-04-08 | 1997-04-23 | 景达实业股份有限公司 | Partition plate frame connecting structure |
| CN201047116Y (en) * | 2007-04-23 | 2008-04-16 | 徐建华 | Wallboard corner coupling assembly |
| CN202055369U (en) * | 2011-04-22 | 2011-11-30 | 河南天丰节能板材科技股份有限公司 | Connecting component for connecting between wall plates of composite plate |
| CN103015623A (en) * | 2013-01-07 | 2013-04-03 | 张建忠 | Prefabricated slab and fixed mounting structure thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108779636A (en) * | 2016-02-22 | 2018-11-09 | 威格建筑***有限责任公司 | Stacked structure steel wall truss |
| CN108779634A (en) * | 2016-02-22 | 2018-11-09 | 威格建筑***有限责任公司 | Multi-story structure is constructed using stacked structure steel wall truss |
| CN108779635A (en) * | 2016-02-22 | 2018-11-09 | 威格建筑***有限责任公司 | Use the method for constructing multi-story structure of stacked structure steel wall truss |
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| CN103382741B (en) | 2016-05-25 |
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Effective date of registration: 20190425 Address after: 510000 Dabao Plaza 1301, No. 109 Liuhua Road, Yuexiu District, Guangzhou, Guangdong Province Patentee after: Guangzhou Australia Technology Co., Ltd. Address before: 510000 Room 1004, Shangsha 5, Yongsheng, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: Zhang Jianzhong |
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