CN115305967B - PC prefabricated water dispersion component - Google Patents
PC prefabricated water dispersion component Download PDFInfo
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- CN115305967B CN115305967B CN202210789392.9A CN202210789392A CN115305967B CN 115305967 B CN115305967 B CN 115305967B CN 202210789392 A CN202210789392 A CN 202210789392A CN 115305967 B CN115305967 B CN 115305967B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The utility model relates to a construction technical field discloses PC prefabricates water component that looses, including the water platform that looses, one side of water platform that looses is provided with the connecting block of dysmorphism, the spread groove has been seted up to the opposite side of water platform that looses, the connecting block is pegged graft the cooperation with the spread groove on the adjacent water platform, the lateral wall of connecting block sets up with the lateral wall interval that corresponds in the spread groove, be provided with first parting bead on the lateral wall of connecting block, the lateral wall butt that first parting bead corresponds with matched with the spread groove, one side that the water platform was provided with the connecting block is provided with the second parting bead, the second parting bead forms first movement joint with the lateral wall butt of adjacent water platform that looses after two adjacent water platforms splice. The present application has the effect of improving the strength of connection between two adjacent prefabricated water distributing members.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a PC prefabricated water dispersing component.
Background
The water dispersing component is an outdoor ground part which is vertically connected and inclined with the outer wall footing and is used for draining rainwater and protecting the wall base from being corroded by the rainwater. The width of the water spreading member should be determined according to soil properties, climate conditions, height of the building and roof drainage pattern. In order to ensure smooth drainage, the gradient of the water dispersing component is generally about 3-5%, and the outer edge of the water dispersing component is 30-50 mm higher than the outdoor terrace.
In view of the above related art, the present inventors have found that, in the process of implementing the technical solution of the present invention in the embodiments of the present application, at least the following technical problems exist: the water dispersing component is formed by splicing a plurality of prefabricated components, and two adjacent prefabricated water dispersing components are connected through an expansion joint, so that the connection strength is unstable, and phenomena such as dry cracking are easy to occur.
Disclosure of Invention
According to the PC prefabricated water dispersing component, the problems that two adjacent prefabricated water dispersing components in the prior art are connected through the expansion joint, the connection strength is unstable, phenomena such as dry cracking are easy to occur are solved, and the connection strength between the two adjacent prefabricated water dispersing components is effectively improved.
The embodiment of the application provides a prefabricated water component that looses of PC, including the water platform that looses, one side of water platform is provided with the connecting block of dysmorphism, the spread water other side of platform has been seted up the spread water, the connecting block is pegged graft the cooperation with the spread water last spread water connecting groove adjacent, the lateral wall of connecting block sets up with the lateral wall interval that corresponds in the connecting groove, be provided with first parting bead on the lateral wall of connecting block, the lateral wall butt that first parting bead corresponds with matched with the connecting groove, the one side that the water platform that looses is provided with the connecting block is provided with the second parting bead, the second parting bead is with the lateral wall butt of adjacent water platform that looses, adjacent two form first movement joint after the water platform concatenation.
Further, the upper end face of the first division bar is lower than the upper end face of the connecting block, and the upper end face of the second division bar is lower than the upper end face of the water dispersing table.
Further, the upper end surfaces of the first parting bead and the second parting bead are respectively provided with a tip.
Further, the first parting bead and the second parting bead are elastic parting beads.
Further, one side of the water dispersing table, which is attached to the wall surface, is provided with an elastic transition plate, and the transition plate is detachably connected with the water dispersing table.
Further, a first positioning groove is formed in one side of the water dispersing table, and a positioning column in plug-in fit with the first positioning groove is arranged on one side of the transition plate.
Further, the transition board is including the transition upper plate and the transition hypoplastron of mutual butt, transition upper plate and transition hypoplastron all are provided with the reference column of grafting in first constant head tank, logical groove has been seted up to the up end of transition hypoplastron, the cell wall in logical groove runs through the transition hypoplastron and is close to one side of wall, one side that the transition upper plate is close to the wall aligns with one side that logical groove kept away from the wall.
Furthermore, the water dispersing table is provided with a counter-sunk hole.
Further, a thread sleeve is arranged in the counter bore, and a hoisting piece is connected in the thread sleeve in a threaded manner.
Further, a reinforcement is inserted into the countersunk hole.
The technical scheme provided in the embodiment of the application has at least the following technical effects or advantages:
1. because the first parting bead and the second parting bead are adopted, the connection between two adjacent water dispersing tables can be enhanced, the first deformation joint can be reserved at the connection part of the two adjacent water dispersing tables conveniently, the expansion joint is constructed conveniently, the problems that two adjacent prefabricated water dispersing components are connected through the expansion joint, the connection strength is unstable, the phenomena of dry cracking and the like are easy to occur in the prior art are solved, and the connection strength between the two adjacent prefabricated water dispersing components is improved effectively.
2. Because the transition plate is adopted, the transition plate and the water dispersing table are connected through the structure of up-down splicing, the construction of the wall decoration layer to the through groove is convenient, the integral connection is enhanced, the construction of the wall decoration layer is convenient to limit through the transition upper plate, the transition upper plate can be removed after the construction of the wall decoration layer, the second deformation joint is constructed in the gap between the water dispersing table and the wall surface, and the connection between the water dispersing table and the integral body is enhanced.
3. Because be provided with the counter bore on the platform that looses, can be at the downthehole pre-buried screw thread cover that has of counter bore, be connected with the hoist and mount piece through screw thread cover detachably, can conveniently hoist the platform that looses to construction department, still can be through counter bore grafting reinforcement, improve the joint strength of platform and ground that looses.
Drawings
FIG. 1 is a schematic view of a water distribution table surrounding a wall in an embodiment of the present application;
FIG. 2 is a schematic diagram of a connection structure of a plurality of water distribution tables according to an embodiment of the present application;
FIG. 3 is a side view of a water distribution stand in an embodiment of the present application;
FIG. 4 is a schematic view of a stacked structure of a plurality of water distribution tables according to an embodiment of the present application;
FIG. 5 is an enlarged schematic view of FIG. 2 at A
FIG. 6 is an enlarged schematic view at B in FIG. 1;
fig. 7 is a schematic structural diagram of a lifting member in an embodiment of the present application;
fig. 8 is a schematic diagram of an arrangement structure of a limit groove in an embodiment of the present application;
in the figure: 1. a water dispersing table; 11. a first connection portion; 12. a second connecting portion; 13. a connecting block; 14. a connecting groove; 15. a first division bar; 16. a second division bar; 17. a first positioning groove; 18. a second positioning groove; 19. a countersunk hole; 2. a first deformation joint; 3. a transition plate; 31. a transitional upper plate; 32. a transitional lower plate; 33. positioning columns; 34. a through groove; 4. a second deformation joint; 5. a connecting column; 6. a thread sleeve; 61. a fixed rod; 7. hoisting the piece; 71. a connecting column; 72. hoisting the column; 721. a hoisting hole; 73. a connecting spring; 74. a limit column; 75. a limit groove; 751. a first tank body; 752. a second tank body; 753. a third tank; 8. a reinforcement; 81. a first reinforcing column; 82. and a second reinforcing column.
Detailed Description
The embodiment of the application discloses provides a prefabricated water component that looses of PC, through setting up first parting bead 15 and second parting bead 16, not only conveniently strengthen the connection between two adjacent water tables 1, can also conveniently reserve out first movement joint 2 in the junction of two adjacent water tables 1, the expansion joint of conveniently constructing, two adjacent prefabricated water components are through being connected by the expansion joint among the prior art, joint strength is unstable, the problem of phenomenon such as easy emergence drier crack has been realized effectively improving joint strength between two adjacent prefabricated water components.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Referring to fig. 1, 2 and 3, a prefabricated water dispersing component of PC, including water dispersing table 1, a plurality of water dispersing table 1 splice are enclosed and are established around the wall body, water dispersing table 1's up end is the inclined plane, the inclined plane is inclined to the direction that is close to the wall body from bottom to top, can make the rainwater along water dispersing table 1's up end flow direction of keeping away from the direction of wall body, water dispersing table 1 keeps away from one side shaping of wall body has first connecting portion 11, first connecting portion 11 keep away from water dispersing table 1 one side shaping has second connecting portion 12, first connecting portion 11 slope sets up, and the incline direction of first connecting portion 11 is unanimous with the inclined plane, the gradient of first inclined portion is less than the gradient of inclined plane, second connecting portion 12 level sets up, can improve the connection stability with the ground through first connecting portion 11 and second connecting portion 12, and first connecting portion 11 and second connecting portion 12 are covered by plain soil or concrete.
Referring to fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, the profiled connecting block 13 is formed on one side of the water dispersing table 1, the connecting grooves 14 are formed on the other side of the water dispersing table 1, the sections of the connecting block 13 and the connecting grooves 14 are dovetail-shaped, the connecting block 13 on one water dispersing table 1 is in plug-in fit with the connecting grooves 14 on the adjacent water dispersing table 1, the side walls of the connecting block 13 are arranged at intervals with the corresponding side walls in the connecting grooves 14, the side walls of the connecting block 13 are fixedly provided with first parting strips 15, the side walls of the first parting strips 15, which correspond to the matched connecting grooves 14, are abutted, the side walls of the first parting strips 15, which are arranged at intervals along the length direction of the connecting block 13, are fixedly provided with second parting strips 16, the second parting strips 16, which are abutted with the side walls of the adjacent water dispersing table 1, the upper end surfaces of the first parting strips 15 are lower than the upper end surfaces of the adjacent water dispersing table 1, the first parting strips 16 and the second parting strips 16 are formed into elastic deformation joints, and the first parting strips and the second parting strips are formed into the tip ends of the first parting strips 1, and the second parting strips are formed into the elastic parting strips 2. By filling the first expansion joint with the construction caulking ointment in the first deformation joint 2, and under the pointed structure, the heights of the first parting bead 15 and the second parting bead 16 are shorter than the height of the water scattering platform 1 itself, the construction of the caulking ointment can be facilitated. Specifically, in the construction process, the connection stability of the two adjacent water distribution tables 1 can be enhanced by coating the side walls of the first parting bead 15 and the second parting bead 16 with glue for building construction.
Referring to fig. 2, 3 and 4, a transition plate 3 is installed at a side of the water dispersion table 1 attached to a wall surface, the transition plate 3 is made of an elastic material, specifically, a rubber material, and the transition plate 3 is detachably connected to the water dispersion table 1. The transition plate 3 comprises a transition upper plate 31 and a transition lower plate 32 which are arranged along the height direction of the water scattering platform 1, a plurality of first positioning grooves 17 which are arranged at intervals are formed in one side, close to the wall surface, of the water scattering platform 1, a plurality of positioning columns 33 which are arranged at intervals are fixedly arranged on one side of the transition plate 3, and the positioning columns 33 are in plug-in fit with the corresponding first positioning grooves 17. The fixed reference column 33 of transition upper plate 31 and transition lower plate 32 one side butt each other to peg graft in first constant head tank 17, be located the reference column 33 upper end of transition upper plate 31 and be fixed with the hoisting block, conveniently take out transition upper plate 31. The upper end face of the transition lower plate 32 is provided with the through groove 34, the through groove 34 is arranged along the length direction of the transition lower plate 32, the length direction of the transition lower plate 32 is consistent with the width direction of the water scattering platform 1, the groove wall of the through groove 34 penetrates through one side, close to the wall, of the transition lower plate 32, one side, close to the wall, of the transition upper plate 31 is aligned with one side, far away from the wall, of the through groove 34, and when the water scattering platform 1 is installed on one side of the wall, the second deformation joint 4 is formed between the water scattering platform 1 and the wall through the structure of the transition plate 3. When the water dispersing table 1 is installed around a wall body, the construction wall decoration layer can be limited through the transition upper plate 31, so that the wall decoration layer can be extended and transited to the through groove 34, the integral connection and the attractiveness are enhanced, after the wall decoration layer is completely constructed, the transition upper plate 31 can be taken out through the lifting block, and building caulking ointment is filled in the second deformation joint 4 to form a second expansion joint.
Referring to fig. 2, 3 and 4, a plurality of second positioning grooves 18 are formed in one side, far away from the wall surface, of the water dispersing table 1, namely, a plurality of second positioning grooves 18 are formed in one side, far away from the first connecting portion 11, of the second connecting portion 12, the second positioning grooves 18 are in one-to-one correspondence with the first positioning grooves 17, bottoms of the first positioning grooves 17 and the second positioning grooves 18 are not communicated, the first positioning grooves 17 and the second positioning grooves 18 are arc-shaped grooves, and arcs of the arc-shaped grooves are major arcs. When carrying out the transportation to the prefabrication of water scattering platform 1, can stack a plurality of water scattering platforms 1 in proper order to be located the water scattering platform 1 of below and be located the third connecting portion correspondence on the water scattering platform 1 of top, make the first constant head tank 17 on one water scattering platform 1 align with the second constant head tank 18 on the adjacent water scattering platform 1, fix a position adjacent water scattering platform 1 through the spliced pole, peg graft respectively in the first constant head tank 17 on one water scattering platform 1 and the second constant head tank 18 on the adjacent water scattering platform 1 at the both ends of spliced pole, and the inclined plane of adjacent water scattering platform 1 is laminated each other, wholly can splice into the cube form, conveniently transport, can also be convenient for reduce construction occupation place. When the water dispersing table 1 is installed around a wall body, the first positioning groove 17 can be used as a containing groove, and after the caulking ointment is filled, the connection strength of the second expansion joint and the water dispersing table 1 is improved.
Referring to fig. 1, 3 and 6, a counter bore 19 is formed in the water dispersing table 1, a threaded sleeve 6 is fixedly installed in the counter bore 19, a plurality of uniformly distributed fixing rods 61 are fixed on the outer side wall of the threaded sleeve 6, the fixing rods 61 are inserted into the water dispersing table 1, the threaded sleeve 6 is connected with the water dispersing table 1 in a pre-buried mode, and the upper end face of the threaded sleeve 6 is lower than the upper end face of the water dispersing table 1. Every water table 1 goes up the interval and is provided with two counter bores 19, and a thread bush 6 internal thread is connected with hoist and mount piece 7, can conveniently hoist and mount water table 1, improves the efficiency of construction, has pegged graft in another thread bush 6 and has reinforcement 8, can peg graft subaerial, strengthens the connection of water table 1 and ground.
Referring to fig. 1, fig. 6, fig. 7 and fig. 8, specifically, hoist 7 includes spliced pole 715 and hoist and mount post 72, spliced pole 715 is hollow structure, hoist and mount hole 721 has been seted up to one side of hoist and mount post 72, the opposite side of hoist and mount post 72 is passed to the pore wall of hoist and mount hole 721, the lower extreme of hoist and mount post 72 is pegged graft in spliced pole 715 and can be along the direction of height of spliced pole 715 sliding arrangement, fixedly connected with connecting spring 73 between the lower extreme of hoist and the interior bottom wall of spliced pole 715, two spacing grooves 75 about spliced pole 715 central symmetry have been seted up at the inside wall of spliced pole 715, the week lateral wall fixed mounting of hoist and mount post 72 has two spacing posts 74, every spacing post 74 all sliding connection is in a spacing groove 75, and spacing groove 75 includes first cell body 751, second cell body 752 and third cell body 753, first cell body 751 sets up along the direction of height of spliced pole 715, third cell body 753 sets up along the circumference of spliced pole 715, height direction of spliced pole 715 is provided with second cell body 752, the second cell body 753 is parallel to first cell body 752 and the second end 753, the equal parallel with second cell body 753 of another end, the second cell 753. After the hoisting is completed, the hoisting column 72 is pressed, so that the limit column 74 slides into the second groove body 752 along the first groove body 751, then the hoisting column 72 is rotated, the limit column 74 slides into the third groove body 753 along the second groove body 752, the limit column 74 is loosened, and the limit column 74 can be moved to the top of the third groove body 753 under the action of the connecting spring 73, and at the moment, the top of the hoisting column 72 is flush with the top of the connecting column 715. In order to improve stability of the connecting spring 73, grooves are formed in the lower end face of the lifting column 72 and the inner bottom wall of the connecting column 715, and two ends of the connecting spring 73 are fixedly connected with bottoms of the two grooves respectively. The connecting column 715 is formed by splicing two integrally formed columns, external threads matched with the threaded sleeve 6 are formed in the circumferential direction of the column positioned below, and the diameter of the column positioned above is larger than that of the column positioned below, so that the column positioned above is abutted in the countersink 19. The reinforcement 8 includes first reinforcement post 81, second reinforcement post 82, and the bottom of first reinforcement post 81 is circular cone form, and the diameter of second reinforcement post 82 is greater than the diameter of first reinforcement post 81, and the diameter of first reinforcement post 81 is less than the internal diameter of thread bush 6, can conveniently peg graft first reinforcement post 81 in ground to second reinforcement post 82 can fill in countersunk hole 19. Further, the reinforcement member 8 may be provided with a first reinforcement post 81 fixedly mounted to the bottom of the connection post 715.
The working principle of the embodiment of the application is as follows: the method comprises the steps of removing impurities from the ground around a wall body, leveling, enabling the shape of the ground to be matched with the bottom of a water dispersing table 1, paving one water dispersing table 1 on the ground, enabling a transition plate 3 to be attached to the wall surface, smearing glue on one side, attached to the wall surface, of the transition plate 3, enabling a reinforcing member 8 to be inserted into a counter bore 19, enabling the reinforcing member 8 to position the water dispersing table 1, installing adjacent water dispersing tables 1 after the water dispersing tables 1 are installed, inserting connecting blocks 13 on the adjacent water dispersing tables 1 into connecting grooves 14 on the water dispersing tables 1 based on the water dispersing tables 1, enabling a first parting bead 15 and a second parting bead 16 to be abutted to the side wall of the water dispersing table 1, smearing glue on the side wall, abutted to the water dispersing tables 1, of the first parting bead 15 and the second parting bead 16, and reinforcing connection. And by analogy, the water scattering table 1 is installed, a structure of mutually spliced and matched is adopted for the two water scattering tables 1 positioned at the corners of the wall body, and a connecting groove 14 and a connecting block 13 can not be arranged at the connecting position.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, within the scope of the present application, should apply to the present application, and all equivalents and modifications as fall within the scope of the present application.
Claims (7)
1. The PC prefabricated water scattering component comprises a water scattering table (1), and is characterized in that a special-shaped connecting block (13) is arranged on one side of the water scattering table (1), a connecting groove (14) is formed in the other side of the water scattering table (1), the connecting block (13) is in plug-in fit with the connecting groove (14) on the adjacent water scattering table (1), and the side wall of the connecting block (13) is arranged at intervals with the corresponding side wall in the connecting groove (14);
a first parting bead (15) is arranged on the side wall of the connecting block (13), the first parting bead (15) is abutted with the side wall corresponding to the matched connecting groove (14), a second parting bead (16) is arranged on one side of the water scattering table (1) where the connecting block (13) is arranged, the second parting bead (16) is abutted with the side wall of the adjacent water scattering table (1), and a first deformation joint (2) is formed after the adjacent two water scattering tables (1) are spliced;
a first positioning groove (17) is formed in one side of the water scattering table (1), an elastic transition plate (3) is arranged on one side, which is attached to the wall surface, of the water scattering table (1), and the transition plate (3) is detachably connected with the water scattering table (1); the transition plate (3) comprises a transition upper plate (31) and a transition lower plate (32) which are mutually abutted, the transition upper plate (31) and the transition lower plate (32) are respectively provided with a positioning column (33) which is inserted into the first positioning groove (17), the upper end surface of the transition lower plate (32) is provided with a through groove (34), the groove wall of the through groove (34) penetrates through one side, close to the wall, of the transition lower plate (32), and one side, close to the wall, of the transition upper plate (31) is aligned with one side, far away from the wall, of the through groove (34);
one side of transition board (3) is provided with and first constant head tank (17) grafting complex reference column (33) the one side that water table (1) kept away from the wall has seted up a plurality of second constant head tanks (18), second constant head tank (18) with first constant head tank (17) one-to-one sets up, when carrying out the prefab of water table (1), will be a plurality of water table (1) stack in proper order and make one first constant head tank (17) on water table (1) are adjacent second constant head tank (18) on water table (1) align, through the spliced pole to adjacent water table (1) are fixed a position, and the both ends of spliced pole are pegged graft respectively in first constant head tank (17) on water table (1) and adjacent second constant head tank (18) on water table (1), and adjacent water table (1) inclined plane laminating each other, can wholly splice into the transportation cube, can conveniently carry out.
2. The PC prefabricated water dispersion member according to claim 1, characterized in that the upper end surface of the first division bar (15) is lower than the upper end surface of the connection block (13), and the upper end surface of the second division bar (16) is lower than the upper end surface of the water dispersion table (1).
3. The PC prefabricated water dispersion member according to claim 1, characterized in that the upper end surfaces of the first (15) and second (16) parting strips are each provided with a tip.
4. The PC prefabricated water dispersion member according to claim 1, characterized in that said first (15) and second (16) parting strips are each elastic parting strips.
5. PC prefabricated water dispersion member according to claim 1, characterized in that the water dispersion table (1) is provided with counter-sunk holes (19).
6. The PC prefabricated water dispersing component according to claim 5, wherein a threaded sleeve (6) is arranged in the counter bore (19), and a hoisting piece (7) is connected with the threaded sleeve (6) in a threaded manner.
7. PC prefabricated water dispersion component according to claim 5, characterized in that the reinforcement (8) is inserted into the countersink (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210789392.9A CN115305967B (en) | 2022-07-06 | 2022-07-06 | PC prefabricated water dispersion component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210789392.9A CN115305967B (en) | 2022-07-06 | 2022-07-06 | PC prefabricated water dispersion component |
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| CN115305967A CN115305967A (en) | 2022-11-08 |
| CN115305967B true CN115305967B (en) | 2023-07-28 |
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| Title |
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| "7"字状构造自防水型散水设计与施工技术研讨;周晓斌;何强;曹维存;;中国建筑金属结构(10);171-172 * |
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