CN112695800B - Assembled integral type underground structural steel-concrete combined connecting structure and construction method - Google Patents
Assembled integral type underground structural steel-concrete combined connecting structure and construction method Download PDFInfo
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- CN112695800B CN112695800B CN202011427119.9A CN202011427119A CN112695800B CN 112695800 B CN112695800 B CN 112695800B CN 202011427119 A CN202011427119 A CN 202011427119A CN 112695800 B CN112695800 B CN 112695800B
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
Abstract
The connecting structure comprises a first member, a second member and a post-cast concrete member, wherein one ends of the first member and the second member on the water-facing side are mutually supported to form a member assembling supporting area, one ends of the first member and the second member on the back water side are inwards recessed to form a post-cast concrete overlapping area, the post-cast concrete member is formed in the post-cast concrete overlapping area, reinforcing steel bars are arranged on the water-facing side and the back water side of the first member and the second member, and additional erecting reinforcing steel bars are arranged in the member assembling supporting area of the first member and the second member to ensure the strength; and in the post-cast concrete overlapping area, the stressed steel bars of the first component and the stressed steel bars of the second component are connected into a whole steel bar framework through the connecting flat steel, the first flat steel, the second flat steel, the first screw rod, the second screw rod and the corresponding nuts. Therefore, the invention overcomes the defects of the existing grouting sleeve connecting joint for the assembled integral underground structure, has reasonable stress, low manufacturing cost, convenient construction, time and labor saving, good waterproof performance and good shearing resistance, can effectively shorten the construction period, is also suitable for an underground structure earthquake-resistant structural system, and has wide popularization and application prospects under the situation of rapid development of underground structure construction in China.
Description
Technical Field
The invention relates to the technical field of underground engineering, in particular to an assembled integral type underground structural steel-concrete combined connecting structure and a construction method.
Background
The prefabrication and assembly technology has the characteristics of environmental protection, energy conservation, greenness, high degree of mechanization and the like, and is widely applied to overground building structures in China. In an underground structure, the prefabricated assembly technology is well applied to the shield tunnel, and the earthquake resistance superiority of the shield tunnel is obvious after earthquake examination; meanwhile, the prefabrication and assembly technology is also applied to underground projects such as urban rail transit underground stations, small-section open cut tunnels, comprehensive pipe galleries and the like.
The integral assembly structure combines the advantages of a cast-in-place integral structure and a prefabricated assembly structure, not only saves templates, shortens construction period and reduces engineering cost, but also can improve the integrity and the shock resistance of engineering, has good waterproof performance, and has wide application prospect with the unique advantages under the great situation of rapid development of underground space development in China.
The joint is one of the biggest differences between an assembled integral structure and a traditional cast-in-place structure and is the key for determining the stress performance of the structure. At present, the joint type of an assembled integral underground structure mainly adopts the joint type of an above-ground structure assembled integral structure, namely, an embedded steel bar sleeve grouting connection joint, the connection joint achieves the purpose of connecting prefabricated parts by embedding a steel bar sleeve in a prefabricated part on one side of the joint, inserting a steel bar reserved by the prefabricated part on one side into a corresponding embedded steel bar sleeve of the prefabricated part on the other side when the prefabricated parts are assembled, and grouting is carried out on the steel bar sleeve. The connector has certain advantages when being applied to components with few steel bars, such as connection of precast beams and columns in overground civil buildings. But underground structure load is big, and the component size is big, and the arrangement of reinforcement is dense, and the integral underground structure of assembly adopts this joint to need pre-buried a large amount of sleeves, adopts this method must greatly increase engineering cost, and a large amount of reinforcing bars that prefabricated component reservation of underground structure joint one side need insert the corresponding sleeve of opposite side prefabricated component simultaneously, brings very big degree of difficulty for the engineering construction, and need the sleeve slip casting of reinforcing bar one by one, need consume a large amount of manpower and materials, hardly popularizes and applies.
Therefore, in view of the above-mentioned drawbacks, the present inventors have conducted extensive research and design to overcome the above-mentioned drawbacks by designing and developing an assembled integral type underground structural steel-concrete combined connecting structure and a construction method thereof, which combines the experience and result of the related industries for many years.
Disclosure of Invention
The invention aims to provide an assembled integral type underground structural steel-concrete combined connecting structure and a construction method, which can effectively overcome the defects of the prior art, are reasonable in stress, convenient to construct, time-saving and labor-saving, low in manufacturing cost, good in waterproof performance and capable of effectively shortening the construction period, and meanwhile, the joint has good shear resistance and is suitable for an underground structure earthquake-resistant structure system.
In order to achieve the aim, the invention discloses an assembled integral type underground structural steel-concrete combined connecting structure, which comprises a first member, a second member and a post-cast concrete member, and is characterized in that:
the first member and the second member are mutually supported at one end of the water-facing side to form a member assembling support area, a post-cast concrete seam is formed between the two supports, one end of the first member and the second member on the backwater side is recessed inwards to form a post-cast concrete overlapping area, the post-cast concrete member is formed in the post-cast concrete superposed region, the water facing sides of the first member and the second member are respectively provided with a first water facing side steel bar and a second water facing side steel bar, the water-back sides of the first member and the second member are respectively provided with a first water-back side steel bar and a second water-back side steel bar, the first water-facing side steel bar and the second water-facing side steel bar are formed into a Z shape with the middle bent, the first additional erection steel bars and the second additional erection steel bars are arranged on the water facing sides of the first member and the second member respectively to ensure the strength of an assembly support area in the assembly process of the members.
Wherein: the first vertical portion and the middle inclined connecting portion of the first water-facing side reinforcing steel bar and the second water-facing side reinforcing steel bar are respectively located in the first component and the second component, the second vertical portion is respectively located on the outer sides of the first component and the second component and corresponds to each other, so that the second vertical portion is welded with the first flat steel, meanwhile, the support area and the post-cast concrete superposed area are assembled by the partition components, and the first additional erection reinforcing steel bar and the second additional erection reinforcing steel bar are L-shaped.
Wherein: the first member and the second member are respectively provided with a first waterproof strip preformed groove and a second waterproof strip preformed groove at the position of the post-cast concrete seam so as to install the rubber waterproof strips.
Wherein: first backing water side reinforcing bar and second backing water side reinforcing bar are vertical setting, and one end stretches into in first component and the second component, and the other end stretches out and corresponds and be located post-cast concrete coincide district.
Wherein: the first member and the second member are provided with flexible waterproof layers facing the water, and the flexible waterproof layers are flexible waterproof rolls attached to the facing surfaces of the concrete members.
Wherein: also provided with a connecting and pre-embedding device, the connecting and pre-embedding device comprises a connecting flat steel, a first flat steel, a second flat steel, a first screw rod and a second screw rod, the two ends of the connecting flat steel are respectively welded and connected with the first backing side steel bar and the second backing side steel bar, the first flat steel is welded and fixed on the first water-facing side steel bar, the second flat steel is welded and fixed on the second water-facing side steel bar, two ends of the first screw rod respectively penetrate through and extend out of the connecting flat steel and the first flat steel, one end of the first screw rod extending out of the connecting flat steel is fixed with the first connecting nut in a threaded manner, one end of the first screw rod extending out of the first flat steel is fixed with the first fixing nut in a threaded manner, and two ends of the second screw rod are respectively penetrated and extended out of the connecting flat steel and the second flat steel, one end of the extending and connecting flat steel is in threaded fixation with the second connecting nut, and one end of the extending and connecting flat steel is in threaded connection with the second fixing nut.
Wherein: and a second vertical part of the second water-facing side steel bar extends to the first flat steel and is welded and fixed with the first flat steel so as to fix the water-facing side steel bars of the two components.
Wherein: the first member and the second member are respectively provided with a first water stop band and a second water stop band in the post-cast concrete superposed region, and simultaneously, the concrete surfaces of the first member and the second member, which are in contact with the post-cast concrete member, are all formed with corrugations.
Wherein: the post-cast concrete component is poured through micro-expansion concrete to ensure that the post-cast superposed region component is bonded with the prefabricated component, a plurality of first screw rod mounting holes are formed in the upper portion of the connecting flat steel at intervals, a plurality of second screw rod mounting holes are formed in the lower portion of the connecting flat steel at intervals, and second screw rod reserved clamping grooves extending to the lower end of the connecting flat steel are formed in the lower end of the second screw rod mounting holes so that the second screw rods can be placed in place conveniently.
The two components are supported by a post-cast concrete template with superposed areas embedded on the backwater sides, the template is a shaping template, and concrete pouring holes are arranged on the template at certain intervals.
Also discloses a construction method of the assembled integral type underground structural steel-concrete combined connecting structure, which is characterized by comprising the following steps:
the method comprises the following steps: after the first member and the second member reinforcement cages are manufactured, connecting flat steel, first flat steel, second flat steel, a first screw, a second screw, a first water stop, a second water stop, a first template support and a second template support are embedded in advance;
the first flat steel is welded with a second vertical part of the first member water-facing side steel bar, the second flat steel is welded with a second vertical part of the second member water-facing side steel bar, and the first screw rod and the second screw rod are respectively screwed into the first flat steel and the second flat steel and then are in threaded connection with the flat steel through the first fixing nut and the second fixing nut;
after the first screw penetrates through a first screw mounting hole at one end of the connecting flat steel, welding one end of the connecting flat steel with the tail end of the steel bar at the back water side of the first component, and then mounting a first connecting nut to fix the first screw and the flat steel;
the first template support and the second template support are fixedly connected with the first backwater side steel bars and the second backwater side steel bars in a binding mode respectively.
Step two: after the first component and the second component are prefabricated and molded, installing rubber waterproof strips of the two components, pasting a flexible waterproof layer, and reserving the lap joint length of the flexible waterproof layer at the joint of the two components;
step three: aligning and positioning the component assembling support areas of the first component and the second component, and completing the lapping construction of the waterproof coiled material of the flexible waterproof layer;
step four: adjusting a second water-facing side steel bar, and welding the second water-facing side steel bar with a first flat steel pre-embedded at the water-facing side of the first component so as to connect the water-facing side steel bars of the first component and the second component;
step five: adjusting a second screw, arranging a second screw reserved clamping groove on the connecting flat steel in a second screw mounting hole, fixing the second screw and the connecting steel plate through a second connecting nut, and then welding and fixing a second water-backing side steel bar and the connecting flat steel to form an integral steel skeleton;
step six: a concrete template is poured after an overlapping area is arranged between the first template support and the second template support;
step seven: and pouring the post-cast concrete member by micro-expansion concrete in the post-cast concrete overlapped area so as to form the post-cast concrete member, and forming the first member, the second member and the post-cast concrete member into a whole.
As can be seen from the above, the assembled integral type underground structural steel-concrete combined connection structure and the construction method of the present invention have the following effects:
1. the problem of current assembly integral underground structure through pre-buried a large amount of steel sleeve connect the atress reinforcing bar one by one to steel sleeve grout one by one, the construction degree of difficulty is very big, need consume a large amount of manpowers, financial resources, material resources is solved.
2. The joint has the advantages of reasonable structural stress, convenient construction, high supporting strength, time and labor saving, low manufacturing cost, good waterproof performance, and capability of effectively shortening the construction period.
3. Through the connecting device of reinforcing bar and band steel, can resist the bending action that the joint receives with the concrete jointly, resist the shearing action that the joint receives through connecting screw and concrete jointly, connect more firmly.
4. Through the arrangement of the front and rear reinforcing steel bars and the additional erection reinforcing steel bars, the stable support can be better realized, and the support strength is higher.
5. Waterproof strip and post-cast concrete seam except playing permanent waterproof effect, also play the effect that keeps out the concrete thick liquid and spill over when coincide district secondary concrete placement, ensure that concrete placement is closely knit.
The details of the present invention can be obtained from the following description and the attached drawings.
Drawings
Fig. 1 shows a structural schematic view of an assembled integral type underground structural steel-concrete combined connection structure and a construction method according to the present invention.
Fig. 2 shows a schematic view of the structure of the first member in the present invention.
Fig. 3 shows a schematic view of the structure of the second member in the present invention.
Fig. 4 shows a schematic view in the direction a-a in fig. 1.
Fig. 5 shows a schematic view in the direction B-B in fig. 1.
Fig. 6 shows a schematic view of a part of the construction according to the invention.
Fig. 7 shows a schematic representation of the connection of the flat steel according to the invention.
Reference numerals:
10. a first member; 11. a first water-facing side steel bar; 111. a first vertical portion; 112. a middle inclined connecting part; 112. a second vertical portion; 12. a first landside reinforcement; 13. a first additional erection reinforcement; 14. a first flat steel; 15. a first water stop; 16. a first screw; 17. a first coupling nut; 18. a first fixing nut; 19. supporting a first embedded template; 20. a second member; 21. a second water-facing side steel bar; 22. a second landside reinforcement; 23. a second additional erection reinforcement; 24. a second flat steel; 25. a second water stop; 26. a second screw; 27. a second coupling nut; 28. a second fixing nut; 29. supporting a second embedded template; 30. post-pouring concrete members; 40. connecting flat steel; 41. a first screw mounting hole; 42. a second screw mounting hole; 43. a clamping groove is reserved in the second screw; 50. a flexible waterproof layer; 60. post-pouring concrete seams; 70. a waterproof strip; 71. a first waterproof strip preformed groove; 72. and a second waterproof strip preformed groove.
Detailed Description
Referring to fig. 1 to 7, the assembled integral type underground structural steel-concrete composite coupling structure and the construction method of the present invention are shown.
The main body of the assembled integral type underground structural steel-concrete combined connecting structure comprises a first member 10, a second member 20 and a post-cast concrete member 30, wherein one ends of the first member 10 and the second member 20 on the water-facing side are mutually supported to form a member assembling supporting area, a post-cast concrete seam 60 is formed between the two supports, one ends of the first member 10 and the second member 20 on the water-facing side are inwards concave to form a post-cast concrete overlapped area, the post-cast concrete member 30 is post-cast and formed in the post-cast concrete overlapped area, meanwhile, referring to fig. 2, the water-facing sides of the first member 10 and the second member 20 are respectively provided with a first water-facing side reinforcing steel bar 11 and a second water-facing side reinforcing steel bar 21, the water-facing sides of the first member 10 and the second member 20 are respectively provided with a first water-facing side reinforcing steel bar 12 and a second water-facing side reinforcing steel bar 22, the first water-facing side reinforcing steel bar 11 and the second water-facing side reinforcing steel bar 21 are formed in a Z shape with a bent middle, referring to fig. 6, only the first water-facing side reinforcing bars are shown as an example, the first vertical portions 111 and the middle inclined connecting portions 112 of the first water-facing side reinforcing bars 11 and the second water-facing side reinforcing bars 21 are respectively located in the first member 10 and the second member 20, the second vertical portions 113 are respectively located at the outer sides of the first member 10 and the second member 20 and correspond to each other, so that the second vertical part is welded with the first flat steel, and meanwhile, the component assembling support area and the post-cast concrete overlapping area are partitioned, in the process of assembling the components, the component assembling support area is used as the mounting support part of the first component and the second component, which is convenient for positioning the components and positioning the template for pouring concrete in the superposed area, and the first additional erection steel bar 13 and the second additional erection steel bar 23 are respectively arranged in the component assembling support areas of the prefabricated first component 10 and the prefabricated second component 20 so as to ensure the strength of the assembling support areas in the component assembling process.
Wherein, the first member 10 and the second member 20 are respectively provided with a first waterproof strip preformed groove 71 and a second waterproof strip preformed groove 72 at the position of the member assembling support area close to the post-cast concrete seam 60 at the water-facing side so as to install the rubber waterproof strip 70.
Wherein, first backing side reinforcing bar 12 and second backing side reinforcing bar 22 are vertical setting, and in one end stretched into first component 10 and second component 20, the other end stretched out and just corresponded and is located post-cast concrete coincide district.
The waterproof structure comprises a first member 10, a second member 20, a flexible waterproof layer 50, a first waterproof layer and a second waterproof layer 50, wherein the upstream faces of the first member 10 and the second member 20 are provided with flexible waterproof layers 50, the flexible waterproof layers 50 are flexible waterproof rolls which are pasted on concrete faces of the upstream faces, the flexible waterproof rolls and prefabricated concrete members of the first member 10 and the second member 20 are subjected to chemical reaction and are closely pasted with the prefabricated members, the lap joint length of the two members after being assembled is reserved at the joint of the prefabricated members close to a post-cast concrete seam 60, and the lap joint construction of the waterproof rolls is completed after the members are assembled.
Wherein, in order to realize the stable connection of the first member 10, the second member 20 and the post-cast concrete member 30, the connection pre-buried device of the present invention is especially provided, and referring to fig. 4 and fig. 5, the connection pre-buried device comprises a connection flat steel 40, a first flat steel 14, a second flat steel 24, a first screw 16 and a second screw 26, two ends of the connection flat steel 40 are respectively welded and connected to the first and second backing side steel bars 12 and 22, the first flat steel 14 is welded and fixed to the first and second facing side steel bars 11 and 21, two ends of the first screw 16 respectively penetrate through and extend out of the connection flat steel 40 and the first flat steel 14, one end extending out of the connection flat steel 40 is fixed with the first connection nut 17 by screw thread, one end extending out of the first flat steel 14 and fixed with the first fixing nut 18 by screw thread, two ends of the second screw 26 respectively extend out of the connection flat steel 40 and the second flat steel 24, the one end and the second coupling nut 27 thread tightening that stretch out connection band steel 40, threaded connection and the one end and the second fixation nut 28 thread tightening that stretch out second band steel 24 to form prefabricated component and assemble the pre-buried device of being connected in support area and coincide district, can provide the firm connection of three component when post-pouring concrete, its connection fixation effect is very good.
Wherein the second vertical part of the second water-facing side reinforcing steel bar 22 extends to the first flat steel 14 and is welded and fixed, so as to fix the two water-facing side reinforcing steel bars.
The first member 10 and the second member 20 are respectively provided with a first water stop band 15 and a second water stop band 25 in a post-cast concrete overlapping area, and the concrete surfaces of the first member 10 and the second member 20, which are in contact with the post-cast concrete member 30, are both formed with corrugations, so that the post-cast concrete member 30 can be firmly bonded.
The post-cast concrete member 30 is cast by micro-expansive concrete so as to ensure that the post-cast superimposed area member 30 is well bonded with the first and second members.
Referring to fig. 2 and 3, a first embedded formwork support 19 is arranged on the backwater side of the first member 10, and a second embedded formwork support 29 is arranged on the backwater side of the second member 20.
Referring to fig. 6, the first additional erection reinforcement 13 and the second additional erection reinforcement 23 are L-shaped.
Referring to fig. 7, a plurality of first screw mounting holes 41 are formed at intervals in the upper portion of the connection flat steel 40, a plurality of second screw mounting holes 42 are formed at intervals in the lower portion of the connection flat steel 40, and a second screw pre-clamping groove 43 extending to the lower end of the connection flat steel 40 is formed in the lower end of each second screw mounting hole 42, so that the second screw 26 is positioned in the second screw mounting hole 42 in the connection flat steel 40.
The construction method of the assembled integral type underground structural steel-concrete combined connecting structure comprises the following steps:
the method comprises the following steps: after the first member 10 and the second member 20 are manufactured, embedding a connecting flat steel 40, a first flat steel 14, a second flat steel 24, a first screw 16, a second screw 26, a first water stop 15, a second water stop 25, a first template support 19 and a second template support 29;
the first flat steel 14 is welded with a second vertical part 112 of the water-facing side steel bar of the first component 10, the second flat steel 24 is welded with a second vertical part 112 of the water-facing side steel bar of the second component 20, and the first screw 16 and the second screw 26 are respectively screwed into the first flat steel and the second flat steel and then are in threaded connection with the flat steel through a first fixing nut and a second fixing nut;
after the first screw penetrates through a first screw mounting hole at one end of the connecting flat steel, welding one end of the connecting flat steel with the tail end of the steel bar at the back water side of the first component, and then mounting a first connecting nut to fix the first screw and the flat steel;
the first template support and the second template support are fixedly connected with the first backwater side steel bars and the second backwater side steel bars in a binding mode respectively.
Step two: after the first component and the second component are prefabricated and formed, installing rubber waterproof strips of the two components, pasting a flexible waterproof layer, and reserving the lap joint length of the flexible waterproof layer at the joint of the two components;
step three: aligning and positioning the component assembling and supporting areas of the first component and the second component, and finishing the lapping construction of the waterproof coiled material of the flexible waterproof layer;
step four: adjusting a second water-facing side steel bar, and welding the second water-facing side steel bar with a first flat steel pre-embedded at the water-facing side of the first component so as to connect the water-facing side steel bars of the first component and the second component;
step five: adjusting a second screw, arranging a second screw reserved clamping groove on the connecting flat steel in a second screw mounting hole, fixing the second screw and the connecting steel plate through a second connecting nut, and then welding and fixing a second water-backing side steel bar and the connecting flat steel to form an integral steel skeleton;
step six: a superposition area is arranged between the first template support and the second template support, and then a concrete template is cast;
step seven: and pouring the post-cast concrete member by micro-expansion concrete in the post-cast concrete overlapped area so as to form the post-cast concrete member, and forming the first member, the second member and the post-cast concrete member into a whole.
Therefore, the invention has the advantages that:
1. the problem of current assembly integral underground structure through pre-buried a large amount of steel sleeve connect the atress reinforcing bar one by one to steel sleeve grout one by one, the construction degree of difficulty is very big, need consume a large amount of manpowers, financial resources, material resources is solved.
2. The joint has the advantages of reasonable structural stress, convenient construction, high supporting strength, time and labor saving, low manufacturing cost, good waterproof performance, and capability of effectively shortening the construction period.
3. Through the connecting device of reinforcing bar and band steel, can resist the bending action that the joint receives with the concrete jointly, resist the shearing action that the joint receives through connecting screw and concrete jointly, connect more firmly.
4. Through the arrangement of the front and rear reinforcing steel bars and the additional erection reinforcing steel bars, the stable support can be better realized, and the support strength is higher.
5. Waterproof strip and post-cast concrete seam except playing permanent waterproof effect, also play the effect that keeps out the concrete thick liquid and spill over when coincide district secondary concrete placement, ensure that concrete placement is closely knit.
It should be apparent that the foregoing description and illustrations are by way of example only and are not intended to limit the present disclosure, application or uses. While embodiments have been described in the embodiments and depicted in the drawings, the present invention is not limited to the particular examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the present invention, and the scope of the present invention will include any embodiments falling within the foregoing description and the appended claims.
Claims (8)
1. The utility model provides an assemble integral underground structure steel-concrete combination joint construction, includes first component, second component and post-cast concrete component, its characterized in that:
the first member and the second member are mutually supported at one end of the water-facing side to form a member assembling support area, a post-cast concrete seam is formed between the two supports, one end of the first member and the second member on the backwater side is recessed inwards to form a post-cast concrete overlapping area, the post-cast concrete member is formed in the post-cast concrete superposed region, the water facing sides of the first member and the second member are respectively provided with a first water facing side steel bar and a second water facing side steel bar, the water-back sides of the first member and the second member are respectively provided with a first water-back side steel bar and a second water-back side steel bar, the first water-facing side steel bar and the second water-facing side steel bar are formed into a Z shape with the middle bent, first additional erection steel bars and second additional erection steel bars are arranged on the water facing sides of the first member and the second member respectively to ensure the strength of an assembly supporting area in the assembly process of the members;
the connecting and pre-embedding device is further arranged and comprises a connecting flat steel, a first flat steel, a second flat steel, a first screw rod and a second screw rod, the two ends of the connecting flat steel are respectively welded and connected to a first water-back side reinforcing steel bar and a second water-back side reinforcing steel bar, the first flat steel is welded and fixed to a first water-facing side reinforcing steel bar, the second flat steel is welded and fixed to a second water-facing side reinforcing steel bar, the two ends of the first screw rod are respectively penetrated and extended out of the connecting flat steel and the first flat steel, one end extended out of the connecting flat steel is in threaded fixation with a first connecting nut, one end in threaded connection and extended out of the first flat steel is in threaded fixation with a first fixing nut, the two ends of the second screw rod are respectively penetrated and extended out of the connecting flat steel and the second flat steel, one end extended out of the connecting flat steel is in threaded fixation with a second connecting nut, one end in threaded connection and extended out of the second flat steel is in threaded fixation with a second fixing nut, thereby form prefabricated component and assemble the pre-buried device of being connected in support area and coincide district, can provide the firm connection of three component when casting concrete after, form better connection fixed effect, the vertical portion of second of the side reinforcing bar that meets water extends to first band steel and welded fastening to fix two side reinforcing bars that meet water.
2. The fabricated integral type underground structural steel-concrete composite coupling structure of claim 1, wherein: the first vertical portion and the middle inclined connecting portion of the first water-facing side reinforcing steel bar and the second water-facing side reinforcing steel bar are respectively located in the first component and the second component, the second vertical portion is respectively located on the outer sides of the first component and the second component and corresponds to each other, the second vertical portion is convenient to weld with the first flat steel, meanwhile, the partition components are used for assembling the supporting area and the post-cast concrete overlapping area, and the first additional erection reinforcing steel bar and the second additional erection reinforcing steel bar are L-shaped.
3. The fabricated integral type underground structural steel-concrete composite coupling structure of claim 1, wherein: the first member and the second member are respectively provided with a first waterproof strip preformed groove and a second waterproof strip preformed groove at the positions of the post-cast concrete seams so as to install the rubber-waterproof strips.
4. The fabricated integral type underground structural steel-concrete composite coupling structure of claim 1, wherein: first backing water side reinforcing bar and second backing water side reinforcing bar are vertical setting, and one end stretches into in first component and the second component, and the other end stretches out and corresponds and be located post-cast concrete coincide district.
5. The fabricated integral type underground structural steel-concrete composite coupling structure of claim 1, wherein: the first member and the second member are provided with flexible waterproof layers facing the water, and the flexible waterproof layers are flexible waterproof rolls attached to concrete surfaces facing the water.
6. The fabricated integral type underground structural steel-concrete composite coupling structure of claim 1, wherein: the first member and the second member are respectively provided with a first water stop band and a second water stop band in the post-cast concrete superposed region, and simultaneously, the concrete surfaces of the first member and the second member, which are in contact with the post-cast concrete member, are corrugated.
7. The fabricated integral type underground structural steel-concrete composite coupling structure of claim 1, wherein: the post-cast concrete component is poured through micro-expansion concrete to ensure that the post-cast superposed region is bonded with the prefabricated component, a plurality of first screw rod mounting holes are formed in the upper portion of the connecting flat steel at intervals, a plurality of second screw rod mounting holes are formed in the lower portion of the connecting flat steel at intervals, and second screw rod reserved clamping grooves extending to the lower end of the connecting flat steel are formed in the lower end of the second screw rod mounting holes so that the second screw rods can be placed in place conveniently.
8. The construction method of assembling an integral type underground structural steel-concrete composite joint construction according to any one of claims 1 to 7, comprising the steps of:
the method comprises the following steps: after the first member and the second member reinforcement cages are manufactured, connecting flat steel, first flat steel, second flat steel, a first screw, a second screw, a first water stop, a second water stop, a first template support and a second template support are embedded in advance;
the first flat steel is welded with a second vertical part of the first member water-facing side steel bar, the second flat steel is welded with a second vertical part of the second member water-facing side steel bar, and the first screw rod and the second screw rod are respectively screwed into the first flat steel and the second flat steel and then are in threaded connection with the flat steel through the first fixing nut and the second fixing nut;
after the first screw penetrates through a first screw mounting hole at one end of the connecting flat steel, welding one end of the connecting flat steel with the tail end of the steel bar at the back water side of the first component, and then mounting a first connecting nut to fix the first screw and the flat steel;
the first template support and the second template support are respectively bound, connected and fixed with the first backwater side steel bar and the second backwater side steel bar;
step two: after the first component and the second component are prefabricated and molded, installing rubber waterproof strips of the two components, pasting a flexible waterproof layer, and reserving the lap joint length of the flexible waterproof layer at the joint of the two components;
step three: aligning and positioning the component assembling support areas of the first component and the second component, and completing the lapping construction of the waterproof coiled material of the flexible waterproof layer;
step four: adjusting a second water-facing side steel bar, and welding the second water-facing side steel bar with a first flat steel pre-embedded at the water-facing side of the first component so as to connect the water-facing side steel bars of the first component and the second component;
step five: adjusting a second screw, arranging a second screw reserved clamping groove on the connecting flat steel in a second screw mounting hole, fixing the second screw and the connecting steel plate through a second connecting nut, and then welding and fixing a second water-backing side steel bar and the connecting flat steel to form an integral steel skeleton;
step six: a superposition area is arranged between the first template support and the second template support, and then a concrete template is cast;
step seven: and pouring the post-cast concrete member by micro-expansion concrete in the post-cast concrete overlapped area so as to form the post-cast concrete member, and forming the first member, the second member and the post-cast concrete member into a whole.
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| CN202011427119.9A CN112695800B (en) | 2020-12-09 | 2020-12-09 | Assembled integral type underground structural steel-concrete combined connecting structure and construction method |
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| CN114775439A (en) * | 2022-05-09 | 2022-07-22 | 中交公路规划设计院有限公司 | Steel-concrete combined section connecting structure |
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| JP2010265683A (en) * | 2009-05-15 | 2010-11-25 | Tokyo Electric Power Co Inc:The | Underground structure |
| JP2016102404A (en) * | 2013-12-16 | 2016-06-02 | Ｊｆｅシビル株式会社 | Mending and reinforcement structure of reinforced concrete structural object |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201687102U (en) * | 2010-06-04 | 2010-12-29 | 北京万科企业有限公司 | Assembled integral type shear wall structure system |
| CN204040078U (en) * | 2014-09-09 | 2014-12-24 | 中建城市建设发展有限公司 | A kind of alter-pouring strips mould plate installs structure |
| CN104234088A (en) * | 2014-09-23 | 2014-12-24 | 南京长江都市建筑设计股份有限公司 | Post-cast strip structure of prefabricated double-layer laminate basement external wall panel and construction procedure |
| CN104895230A (en) * | 2015-04-30 | 2015-09-09 | 南京长江都市建筑设计股份有限公司 | Post-cast belt for precast composite floor slabs and construction method of post-cast belt |
| CN106049536A (en) * | 2016-08-01 | 2016-10-26 | 安徽三建工程有限公司 | Splitting method for assembled integral type waterproof comprehensive pipe rack |
| CN207714549U (en) * | 2017-12-14 | 2018-08-10 | 兰州理工大学 | A kind of precast reinforced concrete shear wall attachment device that bending resistance is cut |
| CN108457411A (en) * | 2018-05-31 | 2018-08-28 | 杭州通达集团有限公司 | A kind of laminated floor slab and its construction method of assembled architecture |
| CN208267192U (en) * | 2018-11-06 | 2018-12-21 | 青岛理工大学 | A kind of assembly sunk type floor and its connecting structure entirely |
| CN210482389U (en) * | 2019-07-02 | 2020-05-08 | 北京质诚捷讯水利工程有限公司 | Post-cast strip template supporting structure |
| CN111608314A (en) * | 2020-06-08 | 2020-09-01 | 中甄住工建设科技(湖北)有限公司 | Bidirectional laminated slab concrete structure and integral joint construction method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010265683A (en) * | 2009-05-15 | 2010-11-25 | Tokyo Electric Power Co Inc:The | Underground structure |
| JP2016102404A (en) * | 2013-12-16 | 2016-06-02 | Ｊｆｅシビル株式会社 | Mending and reinforcement structure of reinforced concrete structural object |
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