CN210066817U - Assembly integral vault is striden no post underground structure greatly - Google Patents

Abstract

The utility model belongs to the field of underground engineering construction, and relates to an assembled integral vault large-span pillarless underground structure, which comprises a vault layer plate, a first layer plate, first side walls and enclosing structures, wherein the vault layer plate and the first layer plate are arranged between the two enclosing structures, and the two first side walls are arranged between the first layer plate and the vault layer plate; the vault layer plate comprises a vault layer plate cast-in-place layer and two arc arch plate prefabricated members, wherein one ends, close to each other, of the two arc arch plate prefabricated members are fixed, and the other ends, far away from each other, of the two arc plate prefabricated members are respectively fixed on the two enclosure structures; and vault laminate cast-in-place layers are poured between the arc-shaped arch plate prefabricated members and the enclosure structure, between the two arc-shaped arch plate prefabricated members and on the two arc-shaped arch plate prefabricated members. The utility model discloses combine envelope to form the assembly monolithic structure, can adapt to different construction methods such as lid digs reverse construction, form the superimposed structure through partial prefab and cast-in-place layer, can effectively improve the waterproof performance and the whole atress performance of assembled underground structure; and the building visual effect is good.

Description

Assembly integral vault is striden no post underground structure greatly

Technical Field

The utility model belongs to the technical field of underground works builds, concretely relates to assemble integral vault and stride no post underground structure greatly.

Background

The existing underground structure adopts the traditional construction technology of a cast-in-place reinforced concrete structure, the design process is complex, and the workload is large. In the field construction process, a large amount of labor force of multiple types is needed, the construction operation environment is poor, the construction process is complex, the construction speed is low, and the construction quality is difficult to ensure. A lot of waste building wastes are generated in the construction process, which wastes resources and pollutes the environment. The cast-in-place concrete structure construction management and control is uneven, various quality defects often appear in the appearance or the interior of the concrete structure due to various reasons after construction is completed, the later-stage repair difficulty is high, and the quality is difficult to guarantee.

With the progress of science and technology, the development of equipment manufacturing industry and the upgrading and transformation of industry, more and more work is carried out by replacing manpower with machines, and high technology replaces labor-intensive type and automatic control equipment replaces manual control. Various components (beams, plates, columns, walls) required in the field of building engineering will be gradually produced in batches in factories and then transported to the site for assembly.

With the development of the assembly type technology, the underground structure also has a partial assembly type design and construction technical scheme; some open-cut foundation pits are only suitable for areas with less underground water and adopting slope release or anchor cables (rods), and are not suitable for areas with abundant underground water; some parts only adopt an assembly type structure, the assembly degree is not high, and the assembly efficiency is low; the conventional underground structure with columns has a narrow underground space view; some are only suitable for open cut foundation pit systems.

Disclosure of Invention

In order to overcome the not enough of above-mentioned prior art existence, the utility model aims at providing an assemble integral vault and stride no post underground structure greatly, the space field of vision that can effectively solve underground assembled is not wide, underground assembled structure waterproof problem and structural integrity problem to can adapt to the lid and dig construction scheme.

In order to achieve the purpose, the technical scheme of the utility model is that the assembled integral vault large-span pillarless underground structure comprises a vault layer plate, a first layer plate, first side walls and two enclosing structures, wherein the vault layer plate and the first layer plate are arranged between the two enclosing structures, and the two first side walls are arranged between the first layer plate and the vault layer plate; the vault layer plate comprises a vault layer plate cast-in-place layer and two arc-shaped arch plate prefabricated members, wherein one ends, close to each other, of the two arc-shaped arch plate prefabricated members are fixed, and the other ends, far away from each other, of the two arc-shaped arch plate prefabricated members are respectively fixed on the two building enclosing structures; and vault laminate cast-in-place layers are poured between the arc arch plate prefabricated members and the enclosure structure, between the two arc arch plate prefabricated members and on the two arc arch plate prefabricated members.

Further, the two arc-shaped arch plate prefabricated parts are on the same arc-shaped surface.

Furthermore, the building enclosure is provided with a miter surface for fixing the corresponding arc-shaped arch plate prefabricated member, and the miter surface is arranged by protruding downwards from the upper part of the building enclosure.

Furthermore, a second layer plate is arranged below the first layer plate, second side walls are arranged on two sides of the second layer plate, and two ends of the first layer plate are arranged on the two second side walls on the two sides respectively.

Furthermore, a middle upright post prefabricated part is arranged on the second layer plate, a middle longitudinal beam prefabricated part is arranged on the middle upright post prefabricated part, and the middle part of the first layer plate is arranged on the middle longitudinal beam prefabricated part; and a cast-in-place connecting section of the middle upright post is poured between the middle upright post prefabricated member and the second laminate.

Furthermore, the first floor comprises two first floor prefabricated parts, one end of each first floor prefabricated part is arranged on the middle longitudinal beam prefabricated part, and the other end of each first floor prefabricated part is fixed on the enclosure structure; and a cast-in-situ connecting section of the first floor is poured between the two first floor prefabricated parts.

Furthermore, the first floor comprises a first floor cast-in-place layer and two first floor prefabricated parts, one end of each first floor prefabricated part is arranged on the middle longitudinal beam prefabricated part, the other end of each first floor prefabricated part is fixed on the enclosure structure, and the first floor cast-in-place layer is poured on the top of the middle longitudinal beam prefabricated part, the first floor prefabricated parts and between the first floor prefabricated parts and the enclosure structure.

Further, the second side wall comprises a second side wall prefabricated member, and a second side wall cast-in-place connecting section is poured between the bottom of the second side wall prefabricated member and the second laminate.

Further, the second side wall comprises a second side wall prefabricated member, and a second side wall cast-in-place layer is poured between the second side wall prefabricated member and the enclosure structure and between the second side wall prefabricated member and the second laminate.

Furthermore, the second layer plate comprises two second layer plate-side prefabricated members and a second layer plate-middle prefabricated member arranged between the two second layer plate-side prefabricated members, the two second side walls are respectively arranged on the two second layer plate-side prefabricated members, and a second layer plate cast-in-place connecting section is poured between the second layer plate-middle prefabricated member and the second layer plate-side prefabricated member.

Furthermore, a first groove is formed in one side, away from the enclosure structure, of the second layer plate side prefabricated member, a second groove is formed in one side, opposite to the first groove, of the second layer plate side prefabricated member, and the second layer plate cast-in-place connecting section is located between the first groove and the second groove.

Further, a concrete cushion is arranged below the second laminate, and a waterproof layer is constructed between the concrete cushion and the second laminate.

Further, the first side wall comprises a first side wall prefabricated part, and a first side wall cast-in-place connecting section is poured between the bottom of the first side wall prefabricated part and the first floor.

Further, the first side wall comprises a first side wall prefabricated member, and a first side wall cast-in-place layer is poured between the first side wall prefabricated member and the corresponding enclosure structure and between the first side wall prefabricated member and the first floor plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the vault-layer plate is adopted at the top of the assembled integral vault large-span pillarless underground structure, so that the vault large-space effect is realized, and the visual effect of vault decoration buildings is good;

(2) the utility model provides an assemble big span of integral vault does not have post underground structure's application scope extensively, forms superimposed structure through prefab and cast-in-place layer, can remove some on-spot formwork, erect temporary facilities such as scaffold frame, save the time limit for a project, and can improve waterproof performance and the whole atress performance of assembled underground structure effectively;

(3) the utility model provides an assemble big span of integral vault does not have post underground structure adopts reasonable component piecemeal scheme, can reduce the size and the weight of prefab, make the size and the weight of prefabricated component can adapt to the on-the-spot hoist and mount, the assembly requirement that has the support foundation ditch, the transportation of the prefab of being convenient for simultaneously, and can realize the industrialization to popularize and apply better;

(4) the assembled integral vault long-span column-free underground structure provided by the utility model is convenient for the arc-shaped arch slab prefabricated member to be fixedly connected with the enclosure structure by arranging the oblique joint surface which is downwards protruded from the upper part of the enclosure structure on the enclosure structure;

(5) the utility model provides a cast-in-place 'wet node' is adopted at the joint of the side wall prefabricated member and the laminate prefabricated member, the joint between the laminate prefabricated members and the joint of the laminate prefabricated member and the middle longitudinal beam of the assembled integral vault long-span pillarless underground structure, and the waterproof property and the integrity of the assembled underground structure are good;

(6) the utility model provides an assembled integral vault long-span pillarless underground structure has the advantages of standardized size of prefabricated parts, reduced design workload, improved production efficiency, improved building quality, better industrialization realization, labor saving, template and scaffold saving, shortened construction period, energy conservation, environmental protection and the like;

(7) the utility model provides an assemble integral vault and stride no post underground structure greatly can adopt the lid to dig the method construction, accomplishes the vault plywood construction back, backfills the earthing on the vault plywood, resumes road surface traffic, carries out the construction of structure below the vault plywood again, occupies the road surface time weak point, reduces the influence of construction to road surface traffic.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an assembled integral vault long-span pillarless underground structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an assembled integral vault long-span pillarless underground structure according to a first embodiment of the present invention;

fig. 3 is a schematic view of a connection structure between a second side wall prefabricated member and a reinforced concrete cast-in-place layer according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of a reinforced concrete cast-in-place layer provided in the second embodiment of the present invention;

fig. 5 is a schematic partial structural view of a second side wall prefabricated component according to a second embodiment of the present invention;

fig. 6 is a schematic view of a connection structure of two first floor preforms according to a third embodiment of the present invention;

fig. 7 is a top view of a connection structure of two first floor preforms according to a third embodiment of the present invention;

fig. 8 is a schematic partial structural view of a first floor preform according to a third embodiment of the present invention;

fig. 9 is a schematic partial structural view of a first floor preform according to a third embodiment of the present invention;

in the figure: 1. the building envelope comprises a building envelope, 2, a crown beam, 4, an arc-shaped arch plate prefabricated member, 5, a vault layer cast-in-place layer, 6, a miter surface, 8, a middle longitudinal beam prefabricated member, 9, a first layer plate prefabricated member, 10, a first layer plate cast-in-place connecting section, 11, a first cast-in-place side wall, 12, a concrete cushion layer, 13, a second layer plate side prefabricated member, 131, a first groove, 14, a second layer plate middle prefabricated member, 141, a second groove, 15, a second layer plate cast-in-place connecting section, 16, a second side wall prefabricated member, 17, a second side wall cast-in-place connecting section, 18, a middle upright post prefabricated member, 19, a middle upright post cast-in-place connecting section, 20, a first U-shaped rib, 21, a first positioning member, 22, a second U-shaped rib, 23, a second positioning member, 24, a first transverse reinforcing steel bar, 25, a second transverse reinforcing steel bar, 26, an upper main reinforcing steel bar, 27, an additional transverse, 30. a second vertical tie bar frame 31, a water stop structure 32, an upper longitudinal steel bar 33, a lower longitudinal steel bar 34, a lower main steel bar 35 and an additional longitudinal steel bar; 36. a second side wall cast-in-place layer, 37, a first floor cast-in-place layer, 38, a reinforced concrete cast-in-place layer, 39 and backfill.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Example one

As shown in fig. 1, the embodiment provides an assembled integral vault large-span pillarless underground structure, which comprises a vault layer plate, a first layer plate, first side walls and two enclosing structures 1, wherein the vault layer plate and the first layer plate are arranged between the two enclosing structures 1, and the two first side walls are arranged between the first layer plate and the vault layer plate; the vault layer plate comprises a vault layer plate cast-in-place layer 5 and two arc-shaped arch plate prefabricated members 4, wherein one ends, close to each other, of the two arc-shaped arch plate prefabricated members 4 are fixed, and the other ends, far away from each other, of the two arc-shaped arch plate prefabricated members 4 are respectively fixed on the two building envelope structures 1; and vault laminated plate cast-in-place layers 5 are poured between the arc-shaped arch plate prefabricated members 4 and the building envelope 1, between the two arc-shaped arch plate prefabricated members 4 and on the two arc-shaped arch plate prefabricated members 4. The top of the assembled integral vault large-span pillarless underground structure provided by the embodiment adopts the vault laminate, so that the vault pillarless large-space effect is realized, and the vault decoration building visual effect is good; and a superposed structure is formed by the prefabricated member and the cast-in-place layer, so that temporary facilities such as partial on-site formwork erection and scaffold erection can be omitted, the construction period is shortened, and the waterproof performance and the integral stress performance of the assembled underground structure can be effectively improved.

Further, the two arc-shaped arch plate prefabricated parts 4 are on the same arc-shaped surface. The two arc-shaped arch plate prefabricated members 4 are hoisted to a construction site and then are assembled to form a vault shape, so that the size and the weight of a single prefabricated member can be reduced, and the prefabricated members are convenient to transport, hoist and assemble. Reinforcing steel bars can be reserved on the two sides and the outer side of the arc-shaped arch slab prefabricated member 4 and extend out of the arc-shaped arch slab prefabricated member 4, and the reinforcing steel bars extend into the vault layer plate cast-in-place layer 5 after cast-in-place, so that the bonding strength of the arc-shaped arch slab prefabricated member 4 and the vault layer plate cast-in-place layer 5 is improved. A waterproof layer is constructed on the vault laminate cast-in-place layer 5, and the waterproof performance of the fabricated underground structure is further improved.

Furthermore, the building envelope 1 is provided with a miter surface 6 for fixing the corresponding arc-shaped arch plate prefabricated member 4, and the miter surface 6 is arranged by protruding downwards from the upper part of the building envelope 1. As shown in fig. 1, the miter 6 protrudes from the upper portion of the building envelope 1 to a position between the two building envelopes 1, so that the arc-shaped arch bar prefabricated member 4 is fixedly connected with the building envelope 1, and support is provided for outward expansion of the arc-shaped arch bar prefabricated member 4. Preferably, the inclined joint surface 6 matches the inclination of the end surface of the arc-shaped arch plate prefabricated member 4. In the embodiment, the positioning and fixing of the arc-shaped arch bar prefabricated member 4 and the miter joint 6 can be realized through the connection of the embedded part on the end surface of the arc-shaped arch bar prefabricated member 4 and the embedded part on the miter joint 6, so that the assembly efficiency and the assembly precision are improved, and the construction progress is accelerated; and the positioning and fixing mode can also be used for positioning and fixing other prefabricated members and prefabricated members, the prefabricated members and the building envelope, and the prefabricated members and the concrete cast-in-place structure in the embodiment. The underground structure of the embodiment can be constructed by adopting a cover-excavation method, after the construction of the vault laminate is completed, backfill 39 is filled on the vault laminate to recover the road traffic, and then the construction of the structure below the vault laminate is carried out, so that the road occupation time is short, and the influence of the construction on the road traffic is reduced.

Further, as shown in fig. 1, a second layer board is arranged below the first layer board, second side walls are arranged on two sides of the second layer board, and two ends of the first layer board are respectively arranged on the two second side walls on the two sides.

Further, as shown in fig. 1, a center pillar prefabricated part 18 is arranged on the second layer plate, a center longitudinal beam prefabricated part 8 is arranged on the center pillar prefabricated part 18, and the middle part of the first layer plate is arranged on the center longitudinal beam prefabricated part 8; and a middle upright post cast-in-place connecting section 19 is poured between the middle upright post prefabricated part 18 and the second laminate. In the embodiment, after the middle upright post prefabricated member 18 and the middle longitudinal beam prefabricated member 8 are assembled, the joint can be connected through cast-in-place; the lower end of the middle upright post prefabricated member 18 is connected with the embedded part on the second layer plate through the embedded part, a middle upright post cast-in-place connecting section 19 is formed by pouring concrete between the middle upright post prefabricated member 18 and the second layer plate, the middle upright post prefabricated member 18 and the second layer plate are connected into a whole, and the integrity of the underground structure is improved. In addition, the center pillar and the center stringer of the present embodiment may also be cast in situ.

As an embodiment, as shown in fig. 1, the first floor includes two first floor preforms 9, one end of each first floor preform 9 is disposed on the center longitudinal beam preform 8, and the other end is fixed on the building envelope 1; cast-in-place linkage segment 10 of first floor has been pour between two first floor prefabricates 9, and cast-in-place linkage segment 10 of first floor is with two first floor prefabricates 9 and well longeron prefabricate 8 and be linked into whole, improves assembled underground structure's wholeness. As another embodiment, as shown in fig. 2, the first floor includes a first floor cast-in-place layer 37 and two first floor prefabricated members 9, one end of each first floor prefabricated member 9 is disposed on the center longitudinal beam prefabricated member 18, and the other end is fixed on the envelope 1, the first floor cast-in-place layer 37 is poured on the top of the center longitudinal beam prefabricated member 18, on the first floor prefabricated member 9, and between the first floor prefabricated member 9 and the envelope 1, and the first floor prefabricated member 9 and the first floor cast-in-place layer 37 form a laminated structure, so that the size of a single prefabricated member is reduced, and transportation, hoisting and assembly of the prefabricated members are facilitated. In the above two embodiments, the ends of the two first floor prefabricated parts 9 which are deviated from each other can be respectively fixed with the embedded parts on the two building envelopes 1 through the embedded parts, so that the assembling precision is improved. In addition, the first plywood of this embodiment can also directly adopt the form of full cast-in-place, builds the die block through between second lateral wall and well longeron prefab 8, then pours the concrete and forms first cast-in-place plywood after carrying out the framework of reinforcement ligature at the job site.

As an implementation manner, as shown in fig. 1, the first side wall of this embodiment may adopt a full cast-in-place form, and after the reinforcement cage is bound at the construction site, concrete is poured to form a first cast-in-place side wall 11, and the first slab prefabricated member 9, the envelope structure 1 and the vault slabs are connected into a whole through cast-in-place concrete, so as to improve the integrity of the fabricated underground structure. As another embodiment, the first side wall comprises a first side wall prefabricated member, the bottom of the first side wall prefabricated member is connected with the first floor through an embedded part, and a first side wall cast-in-place connecting section is poured between the first side wall prefabricated member and the first floor, and has the same structure as the second side wall in fig. 1. As a third embodiment, the first side wall includes a first side wall prefabricated member, a first side wall cast-in-place layer is poured between the first side wall prefabricated member and the corresponding enclosure structure and between the first side wall prefabricated member and the first slab, the top and the top of the first side wall prefabricated member are respectively connected with the enclosure structure 1 and the first slab through embedded parts, then the first slab is used as a bottom die, the enclosure structure 1 and the first side wall prefabricated member are used as side dies, concrete is poured to form the first side wall cast-in-place layer, the first side wall prefabricated member and the first side wall cast-in-place layer form a superposed structure, the size and the weight of the prefabricated member can be reduced, the prefabricated member is convenient to transport, hoist and assemble, and the structure of the first side wall prefabricated member is the same as. In addition, a waterproof layer can be constructed on the position, corresponding to the first side wall, of the enclosure structure 1, so that the waterproof performance is improved, and then the construction of the first side wall is completed. The top surface of the first side wall of this embodiment matches with the bottom surface of the vault plywood.

As an embodiment, as shown in fig. 1, the second deck includes two second deck-side prefabricated members 13 and a second deck-middle prefabricated member 14 disposed between the two second deck-side prefabricated members 13, two second side walls are respectively disposed on the two second deck-side prefabricated members 13, and a center pillar prefabricated member 18 is disposed on the second deck-middle prefabricated member 14; and a second-layer plate cast-in-place connecting section 15 is cast between the prefabricated member 14 in the second layer plate and the second-layer plate side prefabricated member 13. The second layer plate of the embodiment is spliced and connected through the multiple sections of prefabricated parts, so that the size and the weight of a single prefabricated part are reduced, and the prefabricated parts are convenient to transport, hoist and splice; and adjacent prefabricated members are connected through concreting, so that the structural integrity is improved. Further, as shown in fig. 1, a first groove 131 is formed in a side of the second floor-side prefabricated member 13 away from the enclosure structure 1, a second groove 141 is formed in a side of the second floor-side prefabricated member 14 opposite to the first groove 131, and the second floor cast-in-place connecting section 15 is located between the first groove 131 and the second groove 141; the first groove 131 and the second groove 141 of the embodiment are oppositely arranged, so that the middle of the cast-in-place connecting section 15 of the second laminate is wide, the upper end and the lower end of the cast-in-place connecting section are narrow, and the integrity and the waterproof performance of the assembled underground structure are further improved; in addition, the reinforcing steel bars reserved on the second floor side prefabricated member 13 extend out of the first groove 131, the reinforcing steel bars reserved on the prefabricated member 14 in the second floor extend out of the second groove 141, the reinforcing steel bars of the two prefabricated members are partially overlapped in the second floor cast-in-place connecting section 15, and the connecting strength of the second floor cast-in-place connecting section 15 is improved, the connecting mode between the two other prefabricated members in the embodiment can also adopt the arrangement mode of the grooves and the reinforcing steel bars, for example, the connecting mode between the first floor prefabricated member 9 and the first floor prefabricated member 9 in the mode of pouring the first floor cast-in-place connecting section 10 between the first floor prefabricated member 9 and the first floor prefabricated member 9 is adopted. As another embodiment, as shown in fig. 2, the second layer plate may be a full cast-in-place type, and the reinforced concrete cast-in-place layer 38 is formed by casting concrete after the reinforcement cage is bound at the construction site. In addition, the second plywood of this embodiment can also adopt superimposed structure, and the second plywood includes two second plywood prefabs, pours the cast-in-place layer of second plywood between two second plywood prefabs and on two second plywood prefabs, forms superimposed structure, and the structure with the first plywood in fig. 2 is the same, improves assembled underground structure's waterproof performance and structural integrity.

Further, the below of second plywood is equipped with concrete cushion 12, and the waterproof layer has been under construction between concrete cushion 12 and the second plywood, improves the waterproof nature of underground structure.

In one embodiment, as shown in fig. 1, the second side wall includes a second side wall prefabricated member 16, and a second side wall cast-in-place connecting section 17 is cast between the bottom of the second side wall prefabricated member 16 and the second laminate. The bottom of the second side wall prefabricated member 16 of this embodiment can be fixed and positioned through the cooperation of the embedded parts on the embedded parts and the second laminate, and the cast-in-place layer is poured between the bottom of the second side wall prefabricated member 16 and the second laminate to connect the second side wall prefabricated member 16 and the second laminate into a whole, so that the whole of the fabricated underground structure is improved. As another embodiment, as shown in fig. 2, the second side wall includes a second side wall prefabricated member 16, and a second side wall cast-in-place layer 36 is cast between the second side wall prefabricated member 16 and the building envelope 1 and between the second side wall prefabricated member 16 and the second laminate; the top and the top of the second side wall prefabricated part 16 are respectively connected with the building envelope 1 and the second layer plate through embedded parts, then the second layer plate is used as a bottom die, the building envelope 1 and the second side wall prefabricated part 16 are used as side dies, concrete is poured to form a second side wall cast-in-place layer 36, the second side wall prefabricated part 16 and the second side wall cast-in-place layer 36 form a superposed structure, the size and the weight of the prefabricated part can be reduced, and the prefabricated part is convenient to transport, hoist and assemble. The second side wall of this embodiment can also adopt the form of full cast-in-place, and cast concrete forms the cast-in-place side wall of second after carrying out framework of reinforcement ligature at the job site. In addition, a waterproof layer can be constructed on the position, corresponding to the second side wall, of the enclosure structure 1, so that the waterproof performance is improved, and then the construction of the second side wall is completed.

The utility model provides a side wall prefab of assembled vault stride no post underground structure greatly all adopts cast-in-place "wet node" with the junction of plywood prefab and the junction of well longeron prefab, and the waterproof nature of assembled underground structure, wholeness are good.

The assembled integral vault long-span pillarless underground structure provided by the embodiment can also be used for underground structures of other N layers, the topmost layer and the bottommost layer can respectively adopt the structural forms of the underground layer and the underground second layer of the embodiment, and the side walls and the laminated plates of other layers can also adopt the structural forms of the laminated plates and the side walls of the utility model, and detailed description is omitted; the assembled integral vault long-span pillarless underground structure provided by the embodiment is not limited by geological conditions, inner supports and the like, the problem that prefabricated members for cover and excavation construction are difficult to hoist and assemble is reasonably solved by adopting a reasonable member partitioning scheme and a scheme of replacing supporting plates in advance for construction, the size and the weight of the prefabricated members are optimized, the requirements of on-site hoisting and assembling of cover and excavation are met, and industrial popularization and application can be well realized. The underground structure that this embodiment provided forms congruent structure through pouring cast-in-place layer in the prefab outside, improves assembled underground structure's waterproof performance and structural integrity, is applicable to major structure engineering such as urban rail transit underground station, basement, utility tunnel.

Example two

As shown in fig. 3 to 5, the present embodiment provides a connection structure of a prefabricated member and a cast-in-place concrete layer, which can be used for connecting a prefabricated member of a first side wall with a cast-in-place first layer slab 37 or a cast-in-place first layer slab when the first side wall is of a laminated structure, and the first layer slab is of a full-cast-in-place or laminated structure, and can also be used for connecting a prefabricated member 16 of a second side wall with a cast-in-place second layer slab or a cast-in-place reinforced concrete layer 38 when the second side wall is of a laminated structure, and the second layer slab is of a full-cast-; the connection structure of the second side wall prefabricated member 16 and the cast-in-place reinforced concrete layer 38 is described as an example, and the connection structure of the first side wall prefabricated member and the cast-in-place first slab 37 or the connection structure of the first cast-in-place slab and the connection structure of the second side wall prefabricated member 8 and the cast-in-place second slab are the same as those described above, and thus, detailed description thereof will be omitted.

The connecting structure of the second side wall prefabricated member 16 and the reinforced concrete cast-in-place layer 38 comprises a second side wall cast-in-place layer 36 for connecting the second side wall prefabricated member 16 and the reinforced concrete cast-in-place layer 38, a first U-shaped rib 20 reserved on the reinforced concrete cast-in-place layer 38 and a second U-shaped rib 22 reserved on the second side wall prefabricated member 16, wherein two side parts of the first U-shaped rib 20 extend into the reinforced concrete cast-in-place layer 38 for fixation, the bottom of the first U-shaped rib 20 extends out of the reinforced concrete cast-in-place layer 38, and the extending length of the first U-shaped rib is determined according to the calculation requirement of the relative installation position and the steel bar overlapping length between the second side wall prefabricated member 16 and the reinforced concrete; one side part of the second U-shaped rib 22 extends into the second side wall prefabricated part 16, the other side of the second U-shaped rib 22 is located in the second side wall cast-in-place layer 36, the second side wall prefabricated part 16 and the second side wall cast-in-place layer 36 are fixed through two sides of the second U-shaped rib 22, meanwhile, the lower ends of the first U-shaped rib 20 and the second U-shaped rib 22 are overlapped, the overlapped part of the first U-shaped rib 20 and the second U-shaped rib 22 is located in the second side wall cast-in-place layer 36, and through the overlapping connection of the first U-shaped rib 20 and the second U-shaped rib 22, the problem that the second side wall prefabricated part 16 and the reinforced concrete cast-in-place layer 38 are difficult to connect on site is solved, and the reinforced concrete cast-in-place layer 38, the second side wall prefabricated part 16 and the second side wall cast-in-place layer 36 are connected through the first U-shaped rib 20 and the second U-shaped rib.

Further, as shown in fig. 4 and 5, the bottom of the second side wall prefabricated member 16 is provided with a first positioning member 21, the reinforced concrete cast-in-place layer 38 is provided with a second positioning member 23 for being matched and positioned with the first positioning member 21, and the second side wall prefabricated member 16 is connected with the reinforced concrete cast-in-place layer 38 for positioning through the connection of the first positioning member 21 and the second positioning member 23, so that the problem that the second side wall prefabricated member 16 and the reinforced concrete cast-in-place layer 38 are difficult to position is effectively solved. As an implementation manner, a leveling device matched with the bottom of the first positioning member 21 may be disposed on the second positioning member 23, so as to improve the positioning accuracy.

Further, the first positioning member 21 is arranged in a staggered manner with the overlapping portions of the first U-shaped rib 20 and the second U-shaped rib 22, the positions of the first positioning member 21, the first U-shaped rib 20 and the second U-shaped rib 22 are not affected, the positioning effect of the first positioning member 21 on the second side wall prefabricated member 16 is guaranteed, and the effect of the first U-shaped rib 20 and the second U-shaped rib 22 on the stress strength of the reinforced connection node is not affected.

Further, one side of the lap joint of the first U-shaped rib 20 and the second U-shaped rib 22 is provided with a plurality of first transverse reinforcing bars 24 at intervals, the first transverse reinforcing bars 24 are perpendicular to the first U-shaped rib 20 and the second U-shaped rib 22, the plurality of first transverse reinforcing bars 24 on the first U-shaped rib 20 and the plurality of first transverse reinforcing bars 24 on the second U-shaped rib 22 are arranged oppositely, and through the arrangement of the first transverse reinforcing bars 24, the first U-shaped rib 20 and the second U-shaped rib 22 can be fixed, and the stress strength of the joint of the second side wall prefabricated member 16 and the reinforced concrete cast-in-place layer 38 can be further enhanced. In addition, a plurality of second transverse reinforcing steel bars 25 are arranged on the two sides of the second U-shaped reinforcing steel bars 22 respectively positioned inside the second side wall prefabricated member 16 and the second side wall cast-in-place layer 36 at intervals, the second transverse reinforcing steel bars 25 are perpendicular to the second U-shaped reinforcing steel bars 22, and the stress strength of the connecting node of the second side wall prefabricated member 16 and the second side wall cast-in-place layer 36 is further enhanced through the second transverse reinforcing steel bars 25.

Further, first U type muscle 20 and second U type muscle 22 all have many, all arrange along first transverse reinforcement 24's extending direction, and first U type muscle 20 and second U type muscle 22 distribute in turn, and the overlap joint is buckled mutually of many first U type muscle 20 and second U type muscle 22, has further strengthened the joint strength of second side wall prefabricated component 16 with reinforced concrete cast-in-place layer 38.

The connecting structure provided by the embodiment solves the problem of difficult positioning implementation of the prefabricated member in the existing fabricated structural member and strengthens the stress strength of the connecting node of the prefabricated member and the concrete cast-in-place layer through buckling connection between the first U-shaped rib 20 and the second U-shaped rib 22 and connection positioning between the first positioning member 21 and the second positioning member 23; meanwhile, the prefabricated member and the concrete cast-in-place layer are cast into an integral structure in a cast-in-place mode, and the problem that water is easy to leak at the joint of the existing fabricated structural member is solved.

The connection structure of the prefabricated member and the cast-in-place concrete layer in the embodiment may also be used for connecting the prefabricated member and the prefabricated member, for example, when the first side wall adopts an overlapped structure, and the first slab adopts a form of a first slab prefabricated member and a first slab cast-in-place connection section, when the second side wall adopts an overlapped structure, and the second slab adopts a form of a second slab cast-in-place prefabricated member and a second slab cast-in-place connection section, the connection of the second side wall prefabricated member and the second slab prefabricated member is only distinguished by replacing the cast-in-place concrete layer with the first slab prefabricated member, and the remaining connection method is not changed, and will not be described in detail herein.

EXAMPLE III

The embodiment provides a connecting structure of prefabricated members and prefabricated members, which can be used for connecting two prefabricated members 9 of a first layer plate when the first layer plate adopts an overlapping structure, and connecting a second prefabricated member of a second layer plate with the second prefabricated member when the second layer plate adopts an overlapping structure; the connection structure of the two first-layer plate preforms 9 will now be described as an example, and the connection structure of the two second-layer plate preforms is the same as that described above, and will not be described in detail.

As shown in fig. 6-9, the embodiment provides a connection structure of prefabricated members, a cast-in-place first floor layer 37 is poured between two first floor prefabricated members 9 and above the two first floor prefabricated members 9, a reinforcing steel framework is reserved on each of the two first floor prefabricated members 9, the reinforcing steel framework includes an upper main rib 26, a lower main rib 34 and a connecting rib 28 connecting ends of the upper main rib 26 and the lower main rib 34, the upper main rib 26 and the lower main rib 34 are arranged in parallel, the lower main rib 34 partially extends into the first floor prefabricated member 9 along the extending direction of the first floor prefabricated member 9, the lower main rib 34 extends out of the first floor prefabricated member 9, and the upper main reinforcement 26 and the connecting reinforcement 28 are arranged inside the first floor cast-in-place layer 37, and the steel bar frames of the two first floor prefabricated members 9 are partially overlapped and arranged inside the first floor cast-in-place layer 37 along the extending direction of the main reinforcement. Rigid connection between two first floor prefab 9 has been realized through the structural design and the steel framework coincide overlap joint design to first floor prefab 9 to this embodiment to and the common atress of superimposed structure that first floor prefab 9 and the cast-in-place layer 37 of first floor combine, guaranteed this connection structure's bearing capacity and durability.

Wherein, the bottom junction of two first floor prefab 9 is equipped with stagnant water structure 31, and as an implementation, this stagnant water structure 31 can be the sealing rod.

Further, as shown in fig. 6 to 9, a plurality of upper longitudinal steel bars 32 are arranged on the upper main bar 26 at intervals along the axial direction thereof, the upper longitudinal steel bars 32 are arranged perpendicular to the upper main bar 26, and the stress strength of the first slab cast-in-place layer 37 is enhanced by arranging the upper longitudinal steel bars 32 and the upper main bar 26 in a criss-cross manner inside the first slab cast-in-place layer 37. Further, as shown in fig. 8 and 9, additional transverse steel bars 27 are arranged on the bottom inner layers of the two first-layer plate prefabricated members 9, the additional transverse steel bars 27 are arranged in parallel with the lower main steel bars 34 in the first-layer plate prefabricated members 9, a plurality of lower longitudinal steel bars 33 are arranged on the additional transverse steel bars 27 at intervals along the axial direction of the additional transverse steel bars, and the additional transverse steel bars 27 and the lower longitudinal steel bars 33 are arranged inside the first-layer plate prefabricated members 9 in a criss-cross manner, so that the stress strength of the two first-layer plate prefabricated members 9 is enhanced; meanwhile, a first vertical pulling and tying rib frame 29 in a wave shape is arranged between the additional transverse steel bars 27 and the upper main steel bars 26, wave crests and wave troughs of the first vertical pulling and tying rib frame 29 are respectively connected to the upper longitudinal steel bars 32 and the lower longitudinal steel bars 33, the first floor prefabricated member 9 and the first floor cast-in-place layer 37 are connected into a whole through the structure and arrangement mode design of the first vertical pulling and tying rib frame 29, the connection strength of the first floor prefabricated member 9 and the first floor cast-in-place layer 37 is enhanced, the bearing capacity of the first floor prefabricated member 9 and the first floor cast-in-place layer 37 is improved, and the problem that water easily leaks from a connection seam of the existing assembly type first floor prefabricated member 9 is solved.

Specifically, the end surfaces of the connecting sides of the two first floor prefabricated members 9 are oblique end surfaces, wherein the connecting rib 28 on one side of one of the first floor prefabricated members 9 is obliquely arranged, and the inclination of the connecting rib 28 is matched with the inclination of the oblique end surface of the other first floor prefabricated member 9, so that the steel bar frame of the first floor prefabricated member 9 can extend above the oblique end surface of the other first floor prefabricated member 9 when being overlapped and lapped with the steel bar frame of the first floor prefabricated member 9, and the connecting rib 28 of the other first floor prefabricated member 9 does not extend out of the connecting rib 28; and be equipped with the second between the splice bar 28 of first floor prefab 9 and upper portion owner muscle 26 and found the tie bar frame 30, the second is found the tie bar frame 30 and is set up for following the first extension direction that found the tie bar frame 29, has strengthened the intensity of first floor prefab 9 with 9 coincide overlap joints of first floor prefab, found the tie bar frame and can also play the effect of fixed prefabricated component outside steel reinforcement skeleton simultaneously.

Furthermore, a plurality of additional longitudinal steel bars 35 are arranged on the lower main steel bar 34, the additional longitudinal steel bars 35 are perpendicular to the lower main steel bar 34, the additional longitudinal steel bars 35 are distributed in the first floor prefabricated member 9 and the first floor cast-in-place layer 37 at intervals, and the stress strength of the joint of the first floor prefabricated member 9 and the first floor cast-in-place layer 37 is enhanced through the additional longitudinal steel bars 35. In addition, as shown in fig. 7, the steel frames of the two first floor prefabricated members 9 may be arranged in a plurality, and the steel frames of the first floor prefabricated members 9 are alternately arranged, so that the connection strength between the first floor prefabricated members 9 and the cast-in-place layer 37 of the first floor is further enhanced, and the overall bearing capacity of the connection structure of the fabricated first floor prefabricated members 9 is improved.

The connecting structure of the prefabricated members and the prefabricated members in the embodiment can also be used for connecting the vertical prefabricated members and the vertical prefabricated members in the length direction of the underground structure to improve the structural integrity and the waterproof performance, for example, the connecting structure of the first side wall prefabricated members and the first side wall prefabricated members, the connecting structure of the second side wall prefabricated members 16 and the like can be used, the connecting structure of the vertical prefabricated members is the same as that of the two transverse first floor prefabricated members 9, the two prefabricated members can be used as templates for connecting the two side wall prefabricated members, and the building envelope or other systems which can be used as template conditions can be used for carrying out superposed layer concrete pouring on the other side of the connecting structure; and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. The utility model provides an assemble integral vault and stride no post underground structure greatly which characterized in that: the building comprises a vault layer plate, a first layer plate, first side walls and two enclosure structures, wherein the vault layer plate and the first layer plate are arranged between the two enclosure structures, and the two first side walls are arranged between the first layer plate and the vault layer plate; the vault layer plate comprises a vault layer plate cast-in-place layer and two arc-shaped arch plate prefabricated members, wherein one ends, close to each other, of the two arc-shaped arch plate prefabricated members are fixed, and the other ends, far away from each other, of the two arc-shaped arch plate prefabricated members are respectively fixed on the two building enclosing structures; and vault laminate cast-in-place layers are poured between the arc arch plate prefabricated members and the enclosure structure, between the two arc arch plate prefabricated members and on the two arc arch plate prefabricated members.

2. The assembled integral type vault large-span pillarless underground structure of claim 1, wherein: the two arc-shaped arch plate prefabricated parts are arranged on the same arc-shaped surface.

3. The assembled integral type vault large-span pillarless underground structure of claim 1, wherein: the building enclosure is characterized in that the building enclosure is provided with a miter surface used for fixing the corresponding arc-shaped arch plate prefabricated member, and the miter surface is arranged by protruding downwards from the upper part of the building enclosure.

4. The assembled integral type vault large-span pillarless underground structure of claim 1, wherein: the lower part of the first laminate is provided with a second laminate, the two sides of the second laminate are provided with second side walls, and the two ends of the first laminate are respectively arranged on the two second side walls on the two sides.

5. The assembled integral type vault large-span pillarless underground structure of claim 4, wherein: a middle vertical column prefabricated part is arranged on the second layer plate, a middle longitudinal beam prefabricated part is arranged on the middle vertical column prefabricated part, and the middle part of the first layer plate is arranged on the middle longitudinal beam prefabricated part; and a cast-in-place connecting section of the middle upright post is poured between the middle upright post prefabricated member and the second laminate.

6. The assembled integral type vault large-span pillarless underground structure of claim 5, wherein: the first floor comprises two first floor prefabricated parts, one end of each first floor prefabricated part is arranged on the middle longitudinal beam prefabricated part, and the other end of each first floor prefabricated part is fixed on the enclosure structure; and a cast-in-situ connecting section of the first floor is poured between the two first floor prefabricated parts.

7. The assembled integral type vault large-span pillarless underground structure of claim 5, wherein: the first floor comprises a first floor cast-in-place layer and two first floor prefabricated parts, one end of each first floor prefabricated part is arranged on the middle longitudinal beam prefabricated part, the other end of each first floor prefabricated part is fixed on the enclosure structure, and the first floor cast-in-place layer is poured on the top of the middle longitudinal beam prefabricated part, the first floor prefabricated parts and between the first floor prefabricated parts and the enclosure structure.

8. The assembled integral type vault large-span pillarless underground structure of claim 4, wherein: the second side wall comprises a second side wall prefabricated part, and a second side wall cast-in-place connecting section is poured between the bottom of the second side wall prefabricated part and the second laminate.

9. The assembled integral type vault large-span pillarless underground structure of claim 4, wherein: the second side wall comprises a second side wall prefabricated part, and a second side wall cast-in-place layer is poured between the second side wall prefabricated part and the enclosure structure and between the second side wall prefabricated part and the second laminate.

10. The assembled integral type vault large-span pillarless underground structure of claim 4, wherein: the second layer plate comprises two second layer plate-side prefabricated members and a second layer plate-middle prefabricated member arranged between the two second layer plate-side prefabricated members, the two second side walls are respectively arranged on the two second layer plate-side prefabricated members, and a second layer plate cast-in-place connecting section is poured between the second layer plate-middle prefabricated member and the second layer plate-side prefabricated member.

11. The assembled monolithic vault large-span pillarless underground structure of claim 10, wherein: one side of the second layer plate side prefabricated member, which is far away from the enclosure structure, is provided with a first groove, one side of the second layer plate side prefabricated member, which is opposite to the first groove, is provided with a second groove, and the cast-in-place connecting section of the second layer plate is positioned between the first groove and the second groove.

12. The assembled integral type vault large-span pillarless underground structure of claim 4, wherein: and a concrete cushion is arranged below the second laminate, and a waterproof layer is constructed between the concrete cushion and the second laminate.

13. The assembled integral type vault large-span pillarless underground structure of claim 1, wherein: the first side wall comprises a first side wall prefabricated part, and a first side wall cast-in-place connecting section is poured between the bottom of the first side wall prefabricated part and the first floor.

14. The assembled integral type vault large-span pillarless underground structure of claim 1, wherein: the first side wall comprises a first side wall prefabricated part, and a first side wall cast-in-place layer is poured between the first side wall prefabricated part and the corresponding enclosure structure and between the first side wall prefabricated part and the first floor plate.

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