CN201605522U - Corrugated steel web reinforced concrete composite structure - Google Patents
Corrugated steel web reinforced concrete composite structure Download PDFInfo
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- CN201605522U CN201605522U CN2009203153944U CN200920315394U CN201605522U CN 201605522 U CN201605522 U CN 201605522U CN 2009203153944 U CN2009203153944 U CN 2009203153944U CN 200920315394 U CN200920315394 U CN 200920315394U CN 201605522 U CN201605522 U CN 201605522U
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- wavelike steel
- steel webplate
- reinforcing bar
- sleeve pipe
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Abstract
The utility model relates to a corrugated steel web concrete composite structure, and particularly discloses a corrugated steel web reinforced concrete composite structure comprising a corrugated steel web, a steel bar and concrete, wherein the surface of the corrugated steel web is manufacture with the roughness being 20mum-800mum; the corrugated steel web is provided with an anchoring hole in which the steel bar is arranged; the corrugated steel web and the steel bar are connected by casting of the concrete. The surface of the corrugated steel web is provided with a special binding film, thus leading the corrugated steel web and the concrete to be more effectively bonded; the anchoring hole is internally provided with a steel bar positioner, thus reducing the local shearing stress concentration as the steel bar keeps to be at the side; and the anchoring hole is provided with a tapping tenon, thus increasing the contact area of the corrugated steel web and the steel bar, and prolonging the service life of the whole structure.
Description
Technical field
The utility model relates to the Wavelike steel webplate concrete combined structure, has related in particular to corrugated steel web reinforced concrete combined structure.
Background technology
At present, along with waveform steel purposes more and more widely, the web quilt gradually of conventional P C case beam replaces with corrugated sheet steel, the deadweight of adopting Wavelike steel webplate can alleviate PC case beam greatly, improve the force-bearing situation of beam body, save material, can reduce the engineering quantity of substructure simultaneously, thereby reduce construction costs.The patent No. as ten thousand water applications is the utility model patent of 200820036647.X, the applying date is on 06 03rd, 2008, the day for announcing is on 03 04th, 2009, notification number is CN201202084, name is called a kind of Wavelike steel webplate prestressed concrete combined box beam sections, said Wavelike steel webplate prestressed concrete combined box beam sections, comprise the steel concrete top board, the casing that reinforced concrete floor and two Wavelike steel webplates form, the two ends, the left and right sides of Wavelike steel webplate are the bonding pad, stretch out outside the casing bonding pad of right-hand member, and its shape can match with the left end bonding pad of another sections; On steel concrete top board and base plate, be reserved with the duct.The key position of its corrugated steel web reinforced concrete combined structure: the junction of Wavelike steel webplate and steel concrete, adopt be traditional fastening tack welding connects and simple anchor hole runs through methods such as reinforcing bar, such fasten tack welding connect method make easily mother metal exist stress concentration height, steel anti-fatigue performance low, fasten tack welding connect intensity low, run through reinforcing bar and not have the shortcoming of accurately locating.
Summary of the invention
The utility model at corrugated sheet steel in the prior art with concrete to be connected effect not good enough, after offering anchor hole on the Wavelike steel webplate, when arranging reinforcing bar, be shifted easily, run through and be subjected under the radial load effect, causing easily shortcomings such as structural deterioration after Wavelike steel webplate behind the reinforcing bar is built by cement, provide a kind of Wavelike steel webplate surface to be provided with special binding film, can make Wavelike steel webplate and concrete more effective bonding, the reinforcing bar positioner is set in anchor hole, guarantee that effectively reinforcing bar is positioned at the center of anchor hole, and the corrugated steel web reinforced concrete combined structure that on anchor hole, also is provided with the perforate tenon that helps keeping reinforcement location.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Corrugated steel web reinforced concrete combined structure, comprise Wavelike steel webplate, reinforcing bar and concrete, the surface preparation of described Wavelike steel webplate the roughness of 20 μ m-800 μ m, Wavelike steel webplate is provided with anchor hole, reinforcing bar is set in the anchor hole, is connected by concreting between Wavelike steel webplate and the reinforcing bar.The Wavelike steel webplate surface preparation roughness of 100 μ m, therefore increased waveform steel surface contact area, thus make between waveform steel and the concrete be connected can be more effective.Be provided with the reinforcing bar positioner in the anchor hole on the Wavelike steel webplate, can effectively play and be maintained fixed action of steel bars, guarantee that reinforcing bar is positioned at the positive center of anchor hole, thereby after building, guaranteed the intensity of structure by cement.
As preferably, the surface of described Wavelike steel webplate is provided with binding film, and binding film is made up of the phosphide of iron and the compound of silicon.Binding film is that a kind of phosphide and masking liquid of the compound of silicon based on iron is sprayed on the surface of Wavelike steel webplate by the method that adopts spraying or brushing, thereby masking liquid and Wavelike steel webplate surface generation chemical reaction are attached on the Wavelike steel webplate and form.Conjunctival thickness is 3 μ m-50 μ m, main component is the phosphide of iron and the compound of silicon, wherein the phosphide of iron helps the Wavelike steel webplate connection that main component is an iron, and the compound of silicon helps being connected with concrete, therefore possesses concrete affinity with various silicate and special cement composition, thereby strengthen Wavelike steel webplate and concrete binding ability, improve the structural strength of whole corrugated steel web reinforced concrete combined structure.
As preferably, described Wavelike steel webplate is one, evenly is provided with anchor hole on the Wavelike steel webplate, and reinforcing bar is set in the anchor hole, and reinforcing bar is vertical with plane, Wavelike steel webplate place, and Wavelike steel webplate and reinforcing bar coupling part all are cast in the concrete.Perforate tenon on the Wavelike steel webplate on the anchor hole forms naturally by the mode of punching press, reinforcing bar is arranged in the general anchor hole, when being subjected to the power parallel with Wavelike steel webplate, Wavelike steel webplate and reinforcing bar cause the concrete fragmentation between Wavelike steel webplate and the reinforcing bar easily when producing shearing force, thereby have influenced the intensity of total.And after the perforate tenon is set on the anchor hole, increased the contact area of Wavelike steel webplate and reinforcing bar, make corrugated steel web reinforced concrete combined structure when being subjected to the power of same case, the absorption portion shearing force, reduce the concrete fragmentation between Wavelike steel webplate and the reinforcing bar, thereby prolonged the application life of total.
As preferably, described anchor hole is provided with the perforate tenon, perforate tenon and Wavelike steel webplate are an integral body, the perforate tenon is perpendicular to plane, Wavelike steel webplate place, the perforate tenon is along the outside protrusion of anchor hole, its cross sectional shape is an annulus, and the protrusion direction of the perforate tenon on the Wavelike steel webplate on the adjacent anchor hole is opposite.Perforate tenon and Wavelike steel webplate are an integral body, process by the mode of punching press is disposable, have saved cost of production.The perforate tenon is the annulus along the outside protrusion of anchor hole, has increased the contact area of reinforcing bar and Wavelike steel webplate, has improved the overall construction intensity of corrugated steel web reinforced concrete combined structure, has prolonged the application life of structure.
As preferably, be provided with sleeve pipe in the described anchor hole, sleeve pipe comprises sleeve pipe and setting of casing, last sleeve pipe and cased internal diameter equal and opposite in direction, the center line of last sleeve pipe becomes vertical with plane, setting of casing diameter place, the external diameter of last sleeve pipe is less than the pore size of anchor hole, and cased external diameter is greater than the pore size of anchor hole.Therefore the last sleeve portion of sleeve pipe can pass Wavelike steel webplate, and setting of casing and Wavelike steel webplate block, and are not easy to come off.
As preferably, described Wavelike steel webplate is two, and the two ends of Wavelike steel webplate are provided with anchor hole, are provided with reinforcing bar in the anchor hole, and reinforcing bar and plane, Wavelike steel webplate place are in an acute angle, and the two ends that Wavelike steel webplate is connected with reinforcing bar are cast in the concrete.The contact area that can effectively increase reinforcing bar and Wavelike steel webplate behind the sleeve pipe is set in the anchor hole, reduce the concrete breakage between Wavelike steel webplate and the reinforcing bar, improve the overall construction intensity of corrugated steel web reinforced concrete combined structure, prolonged the application life of structure.
As preferably, described anchor hole is provided with the perforate tenon, perforate tenon and Wavelike steel webplate are an integral body, perforate tenon and plane, Wavelike steel webplate place are at angle, the perforate tenon is along the outside protrusion of anchor hole, its cross sectional shape is an annulus, and the protrusion direction of the perforate tenon on the Wavelike steel webplate on the adjacent anchor hole is opposite.Perforate tenon and Wavelike steel webplate place Plane intersects are in an acute angle, therefore when the placement of Wavelike steel webplate inclination, can increase the contact area of reinforcing bar and Wavelike steel webplate equally, improve the overall construction intensity of corrugated steel web reinforced concrete combined structure, prolong the application life of structure.
As preferably, be provided with sleeve pipe in the described anchor hole, sleeve pipe comprises sleeve pipe and setting of casing, last sleeve pipe and cased internal diameter equal and opposite in direction, the center line of last sleeve pipe and plane, setting of casing diameter place have angle, the external diameter of last sleeve pipe is less than the pore size of anchor hole, and cased external diameter is greater than the pore size of anchor hole.The center line of last sleeve pipe and plane, setting of casing diameter place are in an acute angle, the contact area that can effectively increase reinforcing bar and Wavelike steel webplate behind the sleeve pipe is set in the anchor hole, reduce the concrete breakage between Wavelike steel webplate and the reinforcing bar, improve the overall construction intensity of corrugated steel web reinforced concrete combined structure, prolonged the application life of structure.
As preferably, the reinforcing bar positioner is installed in the described anchor hole, the reinforcing bar positioner comprises the elastic ring of a circular arc and is welded on feet on the elastic ring that elastic ring is provided with the opening of being convenient to install reinforcing bar.Elastic ring is provided with three feets, by the riding position that the reinforcing bar positioner can make things convenient for the accurate in locating reinforcing bar is set, reduced that the invar muscle keeps to the side and the phenomenon of the shear stress concentration of local that causes, effectively assurance reinforcing bar and Wavelike steel webplate are built the center that the back reinforcing bar is positioned at anchor hole, have guaranteed integrally-built structural strength.
As preferably, described Wavelike steel webplate and concrete coupling part are welded with fastens nail.When nail is fastened in welding, compressive stress district during autotelic selection corrugated steel web molding is as pad, avoid as far as possible or reduce the tensile stress district as pad, before the welding, in the welding, after the welding all to Wavelike steel webplate and fasten nail carry out 50 °-500 ° heat, hold gentle insulation measure, welding under the after heat state immediately to the heat-affected zone, welding position simultaneously, carrying out appropriate frequency impacts or vibrates and adopt simple vibrating device or the vibroplatform of similar pneumatic hammer formula, reach the elimination welding stress, improve combining structure anti-fatigue performance and application life.
The utility model is owing to adopted above technical scheme, have significant technique effect: the Wavelike steel webplate surface is provided with special binding film, can make Wavelike steel webplate and concrete more effective bonding, the reinforcing bar positioner is set in anchor hole, guarantee that effectively reinforcing bar is positioned at the center of anchor hole, reduced that the invar muscle keeps to the side and the shear stress concentration of local that causes, and on anchor hole, also be provided with the perforate tenon that helps keeping reinforcement location, increased the contact area of Wavelike steel webplate and reinforcing bar, make overall structure when being subjected to external force, effectively reduce the broken situation of concrete between Wavelike steel webplate and the reinforcing bar, prolonged the application life of total.
Description of drawings
Fig. 1 is the schematic perspective view of the utility model embodiment 1 and embodiment 2.
Fig. 2 is an I portion front view among Fig. 1, also is the structural representation of the utility model embodiment 1.
Fig. 3 is an I portion front view among Fig. 1, also is the structural representation of the utility model embodiment 2.
Fig. 4 is the schematic perspective view of the utility model embodiment 3 and embodiment 4.
Fig. 5 is the enlarged drawing of II portion among Fig. 4, also is the structural representation of the utility model embodiment 3.
Fig. 6 is the enlarged drawing of II portion among Fig. 4, also is the structural representation of the utility model embodiment 4.
Fig. 7 is the structural representation of reinforcing bar positioner in the utility model.
Fig. 8 is the front view of Wavelike steel webplate in the utility model.
Fig. 9 is the vertical view of Wavelike steel webplate in the utility model.
The toponym that each number designation referred in the above accompanying drawing is as follows: wherein 1-Wavelike steel webplate, 2-reinforcing bar, 3-concrete, 4-reinforcing bar positioner, 5-sleeve pipe, 6-fasten nail, 13-anchor hole, 14-perforate tenon, 41-elastic ring, 42-feet, 43-opening, the last sleeve pipe of 51-, 52-setting of casing.
The specific embodiment
Below in conjunction with accompanying drawing 1 to Fig. 9 and embodiment the utility model is described in further detail:
Corrugated steel web reinforced concrete combined structure, shown in Fig. 1,2,7,8,9, comprise Wavelike steel webplate 1, reinforcing bar 2 and concrete 3, the surface preparation of described Wavelike steel webplate 1 roughness of 50 μ m, Wavelike steel webplate 1 is provided with anchor hole 13, reinforcing bar 2 is set in the anchor hole 13, builds by concrete 3 between Wavelike steel webplate 1 and the reinforcing bar 2 and be connected.
The surface of described Wavelike steel webplate 1 is provided with binding film, and binding film is made up of the phosphide of iron and the compound of silicon.
As shown in Figure 1, described Wavelike steel webplate 1 is one, evenly is provided with anchor hole 13 on the Wavelike steel webplate 1, and reinforcing bar 2 is set in the anchor hole 13, and reinforcing bar 2 is vertical with plane, Wavelike steel webplate 1 place.Wavelike steel webplate 1 all is cast in the concrete 3 with reinforcing bar 2 coupling parts.
As shown in Figure 2, described anchor hole 13 is provided with perforate tenon 14, perforate tenon 14 is an integral body with Wavelike steel webplate 1, perforate tenon 14 is perpendicular to plane, Wavelike steel webplate 1 place, perforate tenon 14 is along the outside protrusion of anchor hole 13, its cross sectional shape is an annulus, and the protrusion direction of the perforate tenon 14 on the Wavelike steel webplate 1 on the adjacent anchor hole 13 is opposite.
As shown in Figure 7, in the described anchor hole 13 reinforcing bar positioner 4 is installed, reinforcing bar positioner 4 comprises the elastic ring 41 of a circular arc and is welded on three feets 42 on the elastic ring 41 that elastic ring 41 is provided with the opening 43 of being convenient to install reinforcing bar 2.
Described Wavelike steel webplate 1 is welded with concrete 3 coupling parts and fastens nail 6.
Corrugated steel web reinforced concrete combined structure, shown in Fig. 1,3,7,8,9, comprise Wavelike steel webplate 1, reinforcing bar 2 and concrete 3, the surface preparation of described Wavelike steel webplate 1 roughness of 100 μ m, Wavelike steel webplate 1 is provided with anchor hole 13, reinforcing bar 2 is set in the anchor hole 13, builds by concrete 3 between Wavelike steel webplate 1 and the reinforcing bar 2 and be connected.
The surface of described Wavelike steel webplate 1 is provided with binding film, and binding film is made up of the phosphide of iron and the compound of silicon.
As shown in Figure 1, described Wavelike steel webplate 1 is one, evenly is provided with anchor hole 13 on the Wavelike steel webplate 1, and reinforcing bar 2 is set in the anchor hole 13, and reinforcing bar 2 is vertical with plane, Wavelike steel webplate 1 place.Wavelike steel webplate 1 all is cast in the concrete 3 with reinforcing bar 2 coupling parts.
As shown in Figure 2, be provided with sleeve pipe 5 in the described anchor hole 13, sleeve pipe 5 comprises sleeve pipe 51 and setting of casing 52, the internal diameter equal and opposite in direction of last sleeve pipe 51 and setting of casing 52, the center line of last sleeve pipe 51 becomes vertical with plane, setting of casing 52 diameter place, the external diameter of last sleeve pipe 51 is less than the pore size of anchor hole 13, and the external diameter of setting of casing 52 is greater than the pore size of anchor hole 13.
As shown in Figure 7, in the described anchor hole 13 reinforcing bar positioner 4 is installed, reinforcing bar positioner 4 comprises the elastic ring 41 of a circular arc and is welded on three feets 42 on the elastic ring 41 that elastic ring 41 is provided with the opening 43 of being convenient to install reinforcing bar 2.
Described Wavelike steel webplate 1 is welded with concrete 3 coupling parts and fastens nail 6.
Corrugated steel web reinforced concrete combined structure, shown in Fig. 4,5,7,8,9, comprise Wavelike steel webplate 1, reinforcing bar 2 and concrete 3, the surface preparation of described Wavelike steel webplate 1 roughness of 200 μ m, Wavelike steel webplate 1 is provided with anchor hole 13, reinforcing bar 2 is set in the anchor hole 13, builds by concrete 3 between Wavelike steel webplate 1 and the reinforcing bar 2 and be connected.
The surface of described Wavelike steel webplate 1 is provided with binding film, and binding film is made up of the phosphide of iron and the compound of silicon.
As shown in Figure 4, described shape steel web 1 is two, and the two ends of Wavelike steel webplate 1 are provided with anchor hole 13, are provided with reinforcing bar 2 in the anchor hole 13, reinforcing bar 2 becomes 60 ° of angles with plane, Wavelike steel webplate 1 place, and the two ends that Wavelike steel webplate 1 is connected with reinforcing bar 2 are cast in the concrete 3.
As shown in Figure 5, described anchor hole 13 is provided with perforate tenon 14, perforate tenon 14 is an integral body with Wavelike steel webplate 1, perforate tenon 14 and plane, Wavelike steel webplate 1 place are at angle, perforate tenon 14 is along the outside protrusion of anchor hole 13, its cross sectional shape is an annulus, and the protrusion direction of the perforate tenon 14 on the Wavelike steel webplate 1 on the adjacent anchor hole 13 is opposite.
As shown in Figure 7, in the described anchor hole 13 reinforcing bar positioner 4 is installed, reinforcing bar positioner 4 comprises the elastic ring 41 of a circular arc and is welded on three feets 42 on the elastic ring 41 that elastic ring 41 is provided with the opening 43 of being convenient to install reinforcing bar 2.
Described Wavelike steel webplate 1 is welded with concrete 3 coupling parts and fastens nail 6.
Corrugated steel web reinforced concrete combined structure, shown in Fig. 4,6,7,8,9, comprise Wavelike steel webplate 1, reinforcing bar 2 and concrete 3, the surface preparation of described Wavelike steel webplate 1 roughness of 400 μ m, Wavelike steel webplate 1 is provided with anchor hole 13, reinforcing bar 2 is set in the anchor hole 13, builds by concrete 3 between Wavelike steel webplate 1 and the reinforcing bar 2 and be connected.
The surface of described Wavelike steel webplate 1 is provided with binding film, and binding film is made up of the phosphide of iron and the compound of silicon.
As shown in Figure 4, described Wavelike steel webplate 1 is two, and the two ends of Wavelike steel webplate 1 are provided with anchor hole 13, are provided with reinforcing bar 2 in the anchor hole 13, reinforcing bar 2 becomes 60 ° of angles with plane, Wavelike steel webplate 1 place, and the two ends that Wavelike steel webplate 1 is connected with reinforcing bar 2 are cast in the concrete 3.
As shown in Figure 6, be provided with sleeve pipe 5 in the described anchor hole 13, sleeve pipe 5 comprises sleeve pipe 51 and setting of casing 52, the internal diameter equal and opposite in direction of last sleeve pipe 51 and setting of casing 52, the center line of last sleeve pipe 51 and plane, setting of casing 52 diameter place have angle, the external diameter of last sleeve pipe 51 is less than the pore size of anchor hole 13, and the external diameter of setting of casing 52 is greater than the pore size of anchor hole 13.
As shown in Figure 7, in the described anchor hole 13 reinforcing bar positioner 4 is installed, reinforcing bar positioner 4 comprises the elastic ring 41 of a circular arc and is welded on three feets 42 on the elastic ring 41 that elastic ring 41 is provided with the opening 43 of being convenient to install reinforcing bar 2.
Described Wavelike steel webplate 1 is welded with concrete 3 coupling parts and fastens nail 6.
In a word, the above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (10)
1. corrugated steel web reinforced concrete combined structure, comprise Wavelike steel webplate (1), reinforcing bar (2) and concrete (3), it is characterized in that: the surface preparation of described Wavelike steel webplate (1) roughness of 20 μ m-800 μ m, Wavelike steel webplate (1) is provided with anchor hole (13), reinforcing bar (2) is set in the anchor hole (13), builds by concrete (3) between Wavelike steel webplate (1) and the reinforcing bar (2) and be connected.
2. corrugated steel web reinforced concrete combined structure according to claim 1 is characterized in that: the surface of described Wavelike steel webplate (1) is provided with binding film.
3. corrugated steel web reinforced concrete combined structure according to claim 1, it is characterized in that: described Wavelike steel webplate (1) is one, evenly be provided with anchor hole (13) on the Wavelike steel webplate (1), reinforcing bar (2) is set in the anchor hole (13), reinforcing bar (2) is vertical with Wavelike steel webplate (1) plane, place, and Wavelike steel webplate (1) all is cast in the concrete (3) with reinforcing bar (2) coupling part.
4. corrugated steel web reinforced concrete combined structure according to claim 3, it is characterized in that: described anchor hole (13) is provided with perforate tenon (14), perforate tenon (14) is an integral body with Wavelike steel webplate (1), perforate tenon (14) is perpendicular to Wavelike steel webplate (1) plane, place, perforate tenon (14) is along the outside protrusion of anchor hole (13), its cross sectional shape is an annulus, and the protrusion direction that Wavelike steel webplate (1) is gone up the perforate tenon (14) on the adjacent anchor hole (13) is opposite.
5. corrugated steel web reinforced concrete combined structure according to claim 3, it is characterized in that: be provided with sleeve pipe (5) in the described anchor hole (13), sleeve pipe (5) comprises sleeve pipe (51) and setting of casing (52), the internal diameter equal and opposite in direction of last sleeve pipe (51) and setting of casing (52), the center line of last sleeve pipe (51) becomes vertical with plane, setting of casing (52) diameter place, the external diameter of last sleeve pipe (51) is less than the pore size of anchor hole (13), and the external diameter of setting of casing (52) is greater than the pore size of anchor hole (13).
6. corrugated steel web reinforced concrete combined structure according to claim 1, it is characterized in that: described Wavelike steel webplate (1) is two, the two ends of Wavelike steel webplate (1) are provided with anchor hole (13), be provided with reinforcing bar (2) in the anchor hole (13), reinforcing bar (2) is in an acute angle with Wavelike steel webplate (1) plane, place, and the two ends that Wavelike steel webplate (1) is connected with reinforcing bar (2) are cast in the concrete (3).
7. corrugated steel web reinforced concrete combined structure according to claim 6, it is characterized in that: described anchor hole (13) is provided with perforate tenon (14), perforate tenon (14) is an integral body with Wavelike steel webplate (1), perforate tenon (14) is in an acute angle with Wavelike steel webplate (1) plane, place, perforate tenon (14) is along the outside protrusion of anchor hole (13), its cross sectional shape is an annulus, and the protrusion direction that Wavelike steel webplate (1) is gone up the perforate tenon (14) on the adjacent anchor hole (13) is opposite.
8. corrugated steel web reinforced concrete combined structure according to claim 6, it is characterized in that: be provided with sleeve pipe (5) in the described anchor hole (13), sleeve pipe (5) comprises sleeve pipe (51) and setting of casing (52), the internal diameter equal and opposite in direction of last sleeve pipe (51) and setting of casing (52), the center line of last sleeve pipe (51) and plane, setting of casing (52) diameter place are in an acute angle, the external diameter of last sleeve pipe (51) is less than the pore size of anchor hole (13), and the external diameter of setting of casing (52) is greater than the pore size of anchor hole (13).
9. corrugated steel web reinforced concrete combined structure according to claim 1, it is characterized in that: reinforcing bar positioner (4) is installed in the described anchor hole (13), reinforcing bar positioner (4) comprises the elastic ring (41) of a circular arc and is welded on feet (42) on the elastic ring (41) that elastic ring (41) is provided with the opening (43) of being convenient to install reinforcing bar (2).
10. corrugated steel web reinforced concrete combined structure according to claim 1 is characterized in that: described Wavelike steel webplate (1) is welded with concrete (3) coupling part and fastens nail (6).
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| CN2009203153944U CN201605522U (en) | 2009-10-20 | 2009-11-22 | Corrugated steel web reinforced concrete composite structure |
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| CN200920199109.7 | 2009-10-20 | ||
| CN200920199109 | 2009-10-20 | ||
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| CN102877550A (en) * | 2012-10-30 | 2013-01-16 | 河南省交通规划勘察设计院有限责任公司 | Steel-concrete mixing type anti-shearing connecting piece |
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| CN103528847A (en) * | 2013-10-30 | 2014-01-22 | 东南大学 | Push-out test piece for embedded shear connector |
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