High-reliability assembly type independent foundation

Abstract

The utility model provides a high-reliability assembly type independent foundation which comprises at least one assembly foundation layer, the assembly foundation layer is formed by assembling a plurality of prefabricated foundation components, the assembly edge of each prefabricated foundation component is provided with at least one edge groove, and the groove wall of each edge groove is provided with a bolt assembly hole. The edge grooves penetrate through the tops of the prefabricated foundation components and the corresponding splicing edges. At the splicing position of every two adjacent prefabricated foundation components, the edge portion grooves in the two splicing edge portions communicate in a one-to-one opposite mode to form a splicing groove, connecting pieces are arranged in the splicing grooves, bolt assembling holes are formed in the connecting pieces, and the connecting pieces are attached to the groove walls of the two corresponding edge portion grooves respectively and fixedly connected with the attached groove walls through bolts. According to the utility model, the connecting pieces and the groove walls of the edge grooves of the two adjacent prefabricated foundation components are subjected to bolt assembly, so that the assembly construction of the foundation layer is realized, the construction efficiency can be effectively improved, the bolt connection has higher connection reliability, and the structural stability and the application reliability of the independent foundation can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and particularly relates to a prefabricated independent foundation. Background Art

[0002] The main transformer, that is, the main transformer, is the core part of the substation. The traditional main transformer foundation is generally a cast-in-place concrete foundation, which requires operations such as on-site formwork support, steel bar binding, pouring, and curing. The construction period is long and the labor intensity of workers is high. At present, with the development of the assembly construction technology, the main transformer foundation has gradually adopted the assembly construction technology. In the existing prefabricated construction of the main transformer foundation, when using precast components to construct the foundation layer, a mortise and tenon assembly structure or a wet joint connection structure is basically adopted; although the mortise and tenon assembly structure is easy to assemble to a certain extent, the connection reliability is poor, and it is limited by the manufacturing accuracy of the mortise and tenon structure, etc.; the wet joint connection structure also requires operations such as steel bar binding, pouring, and curing, which affects the construction efficiency. Content of the Utility Model

[0003] In view of the technical defects and drawbacks existing in the prior art, the embodiment of the utility model provides a highly reliable prefabricated independent foundation that overcomes or at least partially solves the above problems.

[0004] The above-mentioned prefabricated independent foundation has at least one assembled foundation layer, and the assembled foundation layer is assembled by a plurality of precast foundation components. At least one edge groove is provided at the assembled edge of the precast foundation component, and bolt assembly holes are provided on the groove wall of the edge groove. The edge groove penetrates the top of the precast foundation component and the corresponding assembled edge; at the joint of two adjacent precast foundation components, the edge grooves on the two assembled edges are relatively communicated to form an assembled groove. A connecting member is provided in the assembled groove, and bolt assembly holes are provided on the connecting member. The connecting member is respectively abutted against the groove walls of the corresponding two edge grooves and is fixedly connected to the abutted groove walls by bolts.

[0005] Preferably, when the assembled groove is a first assembled groove with an annular groove wall, two plate-shaped connecting members are relatively arranged in the first assembled groove, and the two plate-shaped connecting members are respectively arranged across the joint; or, an annular connecting member is arranged in the first assembled groove.

[0006] Preferably, at least part of the edge grooves are corner-edge grooves, and the corner-edge grooves penetrate two adjacent assembled edges of the precast foundation component; at the joint of four adjacent precast foundation components, the four corner-edge grooves are communicated to form a second assembled groove with an annular groove wall; an annular connecting member is arranged in the second assembled groove; or, four plate-shaped connecting members are arranged in the second assembled groove, and the four plate-shaped connecting members are respectively arranged across the joint.

[0007] Preferably, at least one vertical stiffening rib is provided on the connecting member, and / or at least one horizontal stiffening rib is provided on the connecting member.

[0008] Preferably, the precast foundation member is a square member.

[0009] Preferably, at least one hollow groove is further provided on the precast foundation member, and the hollow grooves are distributed at intervals with the edge grooves.

[0010] Preferably, the assembled independent foundation further includes a bottom foundation layer and an upper foundation layer.

[0011] The bottom foundation layer is the assembled foundation layer, and the upper foundation layer includes one of the precast foundation members.

[0012] Or both the bottom foundation layer and the upper foundation layer are the assembled foundation layers.

[0013] Preferably, the assembled independent foundation further includes a plurality of assembled steel bars. The precast foundation member is provided with steel bar passing holes. The assembled steel bars are inserted into the bottom foundation layer through the upper foundation layer and are consolidated by cast-in-place concrete.

[0014] Preferably, the assembled independent foundation further includes a short column, and the short column is connected to the upper foundation layer.

[0015] Preferably, the short column is a precast member with connecting steel bars reserved at the bottom. A connecting groove is reserved on the upper foundation layer. The short column is supported on the upper foundation layer. The connecting steel bars extend into the connecting groove and cast-in-place concrete is poured in the connecting groove.

[0016] The utility model has the following beneficial effects:

[0017] In the utility model, edge grooves are arranged at the assembling edges of the precast foundation members. The bolt assembly is carried out between the connecting member and the groove walls of the edge grooves of two adjacent precast foundation members to realize the assembly construction of the foundation layer, which can effectively improve the construction efficiency. The bolt connection has high connection reliability and can ensure the structural stability and application reliability of the independent foundation. The connecting member and each groove wall of the edge groove can be connected by a plurality of bolts. Even if some bolts have problems such as anti-corrosion failure or improper operation, it does not affect the overall assembly connection structure, and can ensure the connection reliability and cooperative force-bearing property between two adjacent precast foundation members. Description of the Drawings

[0018] Figure 1 and Figure 2 is a schematic structural diagram of the precast foundation member provided by the embodiment of the utility model;

[0019] Figure 3It is a top view of a prefabricated foundation member;

[0020] Figure 4 It is a schematic structural view of an assembled foundation layer provided by an embodiment of the present invention;

[0021] Figure 5 It is an assembly schematic diagram using an annular connecting member;

[0022] Figure 6 It is a schematic diagram of an independent foundation including a bottom foundation layer and an upper foundation layer;

[0023] Figure 7 It is a schematic diagram of an independent foundation including a bottom foundation layer, an upper foundation layer and a short column;

[0024] Figure 8 It is a schematic structural view of the short column. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] As Figure 4 , Figure 6 and Figure 7 shown, an embodiment of the present invention provides an assembled independent foundation, including at least one assembled foundation layer, the assembled foundation layer is assembled by a plurality of prefabricated foundation members 1, at least one edge groove 11 is provided at the assembled edge of the prefabricated foundation member 1, and bolt assembly holes 111 are provided on the groove wall of the edge groove 11, and the edge groove 11 penetrates through the top of the prefabricated foundation member 1 and the corresponding assembled edge; at the assembly position of two adjacent prefabricated foundation members 1, the edge grooves 11 on the two assembled edges are in one-to-one correspondence and communicated to form an assembly groove 30, a connecting member is provided in the assembly groove 30, and bolt assembly holes 111 are provided on the connecting member, and the connecting member is respectively abutted against the groove walls of the corresponding two edge grooves 11 and is fixedly connected to the abutted groove walls by bolts.

[0027] Among them, the above-mentioned prefabricated foundation member 1 is preferably a reinforced concrete member.

[0028] In one embodiment, as Figures 1 - 3 shown, the above-mentioned prefabricated foundation member 1 is a square member, and other prefabricated foundation members 1 can be assembled from four directions, and it correspondingly has four assembled edges. However, it is not limited to this structure. For example, a hexagonal prefabricated foundation member is also feasible.

[0029] The prefabricated foundation member 1 provided in this embodiment is preferably a standard part, which can reduce the types of prefabricated components required for the construction of independent foundations and improve the level of standardized construction. For example, only one type of prefabricated foundation member 1 can be used to construct independent foundations of various specifications. In this case, it is preferably designed that each side of the prefabricated foundation member 1 is an assembled side, that is, side grooves 11 are provided on each side thereof.

[0030] Among them, when two adjacent prefabricated foundation members 1 are assembled, the two assembled sides are spliced to form a joint 33.

[0031] Since the side groove 11 penetrates the top of the prefabricated foundation member 1 (defining the penetration as the top notch), it can meet the operation space requirements for bolt assembly construction and ensure the reliability and convenience of assembled construction.

[0032] Since the side groove 11 penetrates the assembled side of the prefabricated foundation member 1 (defining the penetration as the side groove notch), when two adjacent prefabricated foundation members 1 are assembled, their assembled sides are in relative contact, and the side grooves 11 on the two assembled sides are in one-to-one relative communication.

[0033] Among them, as Figures 1 - 4 , when the side groove 11 is located between the two ends of the assembled side (the end of the assembled side described here refers to the end where it intersects with other sides of the prefabricated foundation member 1), the side groove 11 has three groove walls and a groove bottom opposite to the top notch. One of the groove walls is opposite to the side groove notch (defined as the first groove wall), and the other two groove walls are opposite and respectively intersect with the corresponding assembled sides (defined as two second groove walls). The relative communication of such two side grooves 11 can form an assembled groove 30 with an annular groove wall, and the assembled groove 30 is defined as the first assembled groove 31; among them, the four second groove walls are butted in pairs in a coplanar manner, and the two first groove walls are opposite. In this solution, preferably, as Figure 4 , two plate connectors 21 are relatively arranged in the first assembled groove 31, and the two plate connectors 21 straddle the joint 33 respectively. Specifically, each plate connector 21 is respectively connected to the two second groove walls in coplanar butt joint. Correspondingly, bolt assembly holes 111 are provided on each second groove wall, and bolt assembly holes 111 may not be provided on the first groove wall. Alternatively, an annular connector 22 is arranged in the first assembled groove 31, and the annular connector 22 is respectively abutted against the four second groove walls and the two first groove walls. Among them, it is preferably that bolt assembly holes 111 are provided on each second groove wall, and better assembly effects can be obtained when bolt assembly holes 111 are further provided on the first groove wall.

[0034] Among them, when the edge groove 11 is located at the end position of the assembled edge, the edge groove 11 is preferably through the top of the precast foundation member 1 and two adjacent assembled edges, and correspondingly has a top notch and two edge notches; define the edge groove 11 as the corner edge groove 110, that is, among the edge grooves 11 of the assembled edge, at least part is the corner edge groove 110. The corner edge groove 110 has two groove walls and a groove bottom opposite to the top notch, and the two groove walls are respectively opposite to the two edge notches, defined as the third groove wall and the fourth groove wall. The relative connection of such two edge grooves 11 can form a third assembly groove 30 with a C-shaped groove wall, wherein the two third groove walls are butted face to face, and the two fourth groove walls are opposite; preferably, plate connectors 21 are respectively connected to the two third groove walls butted face to face, and correspondingly, bolt assembly holes 111 are arranged on each third groove wall, and bolt assembly holes 111 are also preferably arranged on the fourth groove wall, so that the precast foundation member 1 with the corner edge groove 110 can be assembled with other precast foundation members 1 bidirectionally.

[0035] In addition, as Figure 4 and Figure 5 , for the assembly of four adjacent precast foundation members 1, four corner edge grooves 110 are connected to form a second assembly groove 32 with an annular groove wall; an annular connector 22 is arranged in the second assembly groove 32, and the annular connector 22 is respectively connected to each third groove wall and each fourth groove wall; alternatively, four plate connectors 21 are arranged in the second assembly groove 32, and the four plate connectors 21 are respectively arranged across the joint 33.

[0036] The groove wall of the above-mentioned edge groove 11 can be a flat groove wall, and the cross-section of the above-mentioned annular groove wall / C-shaped groove wall should be square; the structure of the connector is designed in a matching manner. For example, the above-mentioned plate connector 21 is a straight plate connector, and the above-mentioned annular connector 22 can adopt a square annular connector, etc. The groove wall of the above-mentioned edge groove 11 can also be a curved groove wall, such as an arc-shaped groove wall, then the cross-section of the above-mentioned annular groove wall should be circular, and the cross-section of the C-shaped groove wall should be semi-circular / sector-shaped / circular segment-shaped. The structure of the connector is designed in a matching manner. For example, the above-mentioned plate connector 21 can adopt a curved plate (sector-shaped curved surface / circular arc-shaped curved surface) connector, and the above-mentioned annular connector 22 can adopt a cylindrical connector, etc.

[0037] In this embodiment, the connector can also be produced in a standardized manner. Producing one type of plate connector 21 and / or one type of annular connector 22 can meet the assembled construction of the independent foundation and improve its standardized construction level.

[0038] Further preferably, as Figure 5, at least one vertical stiffening rib is provided on the connecting member, and / or, at least one horizontal stiffening rib is provided on the connecting member, which can improve the structural strength and stiffness of the connecting member, has a high load-bearing capacity, and can improve the structural stability and application reliability of the assembled independent foundation.

[0039] Preferably, as Figures 1 - 4 , a plurality of edge grooves 11 are provided on the assembling edge, which can improve the connection reliability and cooperative force-bearing performance of two adjacent precast foundation members 1.

[0040] Preferably, along the length direction of the joint, two connecting members are bolted, that is, they are respectively connected to the connecting members in two adjacent assembling grooves 30. Specifically, after the bolt sequentially passes through the connecting member in one assembling groove 30, the groove wall of the edge groove 11 and the connecting member in the other assembling groove 30, it is locked by a nut. In this way, the reliability of the bolt connection can be ensured, and the bolt and nut are not in contact with the concrete member for locking, but in contact with the connecting member for locking, so the connection stability and reliability are higher.

[0041] In one embodiment, as Figures 1 - 4 , at least one hollow groove 12 is further provided on the precast foundation member 1, and the hollow groove 12 and the edge groove 11 are distributed at intervals. Based on this design, the weight of the precast foundation member 1 can be reduced, the consumption of concrete and steel bars can be saved, thereby reducing the precast production cost and on-site construction cost.

[0042] The above-mentioned assembled independent foundation may include a plurality of foundation layers stacked from bottom to top, and each foundation layer may adopt the structure of the above-mentioned assembled foundation layer. In one embodiment, as Figure 6 , the assembled independent foundation includes a bottom foundation layer 100 and an upper foundation layer 200. Among them, the bottom foundation layer 100 is the assembled foundation layer, and the upper foundation layer 200 includes one of the precast foundation members 1, or the upper foundation layer 200 is also the assembled foundation layer.

[0043] In one embodiment, the assembled independent foundation further includes a plurality of assembled steel bars. The precast foundation member 1 is provided with steel bar passing holes 13, and the assembled steel bars are inserted into the bottom foundation layer 100 through the upper foundation layer 200 and are consolidated by cast-in-place concrete.

[0044] Among them, the steel bar passing holes 13 penetrate the precast foundation member 1 from top to bottom. At least part of the steel bar passing holes 13 of the precast foundation member 1 in the upper foundation layer 200 are aligned and communicated with at least part of the steel bar passing holes 13 of the precast foundation member 1 in the bottom foundation layer 100, so that the assembled steel bars can sequentially pass through the steel bar passing holes 13 in the upper and bottom layers from top to bottom.

[0045] Preferably, the precast foundation members 1 of the upper foundation layer 200 are offset from those of the lower foundation layer 100. For example, in the Figure 6 structure shown, the projection of the precast foundation member 1 of the upper foundation layer 200 on the lower foundation layer 100 coincides with multiple precast foundation members 1 at the bottom layer, so that one upper precast foundation member 1 can assemble multiple bottom precast foundation members 1 at the same time, which can improve the flexibility of assembly construction and ensure that the load received by the upper foundation layer 200 is evenly transmitted to the lower foundation layer 100, thereby improving the application reliability and service life of the isolated foundation.

[0046] For the assembled steel bars to be consolidated by cast-in-place concrete, it is preferably that the cast-in-place concrete fills the corresponding steel bar passing holes 13. Correspondingly, the diameter of the steel bar passing holes 13 is larger than the diameter of the assembled steel bars to ensure the bonding reliability and cooperative force-bearing performance between the assembled steel bars and the precast foundation members 1. The cast-in-place concrete can be poured through the upper foundation layer 200, and this part of the cast-in-place concrete can enter the lower foundation layer 100.

[0047] In one embodiment, grouting holes 14 are provided at the bottom of the side groove 11 and / or the bottom of the hollow groove 12, which can be used for grouting downward. For example, grouting through the grouting holes 14 in the lower foundation layer 100 can fill the gap between the lower foundation layer 100 and the underlying surface layer to ensure the application reliability of the isolated foundation; for example, grouting through the grouting holes 14 in the upper foundation layer 200 can fill the side groove 11 and / or the hollow groove 12 in a certain area of the lower foundation layer 100, and the side groove 11 and / or the hollow groove 12 at the corresponding positions in the upper foundation layer 200 are also preferably filled with grout, which can effectively improve the load-bearing capacity of the isolated foundation.

[0048] Further preferably, as shown in Figure 7 , the prefabricated isolated foundation further includes a short column 300, and the short column 300 is connected to the upper foundation layer 200.

[0049] In one embodiment, the short column 300 and the upper foundation layer 200 can also be connected by assembled steel bars. Correspondingly, steel bar passing holes 13 are provided on the short column 300, and the assembled steel bars are inserted into the upper foundation layer 200 through the short column 300 (the assembled steel bars can be further inserted into the lower foundation layer 100), and are consolidated by cast-in-place concrete.

[0050] In one embodiment, as shown in Figure 7 and Figure 8, the short column 300 is a precast member with connecting steel bars 301 reserved at the bottom. A connecting groove is reserved on the upper base layer 200. The short column 300 is supported on the upper base layer 200, and the connecting steel bars 301 extend into the connecting groove and cast-in-place concrete is poured in the connecting groove. Among them, the above-mentioned hollow groove 12 and / or assembly groove 30 can form the connecting groove. This structure can ensure the connection reliability between the short column 300 and the upper base layer 200, and the upper load can be reliably transmitted through the short column 300 - upper base layer 200 - bottom base layer 100. When pouring cast-in-place concrete in the connecting groove, the concrete preferably fills the edge groove 11 and / or hollow groove 12 in the bottom base layer 100 directly below the connecting groove. For example, the concrete enters the bottom-blowing base layer through the above-mentioned grouting holes 14.

[0051] The assembled independent foundation provided in this embodiment can be a main transformer foundation or can be used as other foundations, and has the characteristics of wide application range and high flexibility, and is suitable for popularization and application.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highly reliable prefabricated independent foundation, comprising at least one assembled foundation layer, and the assembled foundation layer is assembled by a plurality of precast foundation members, characterized in that: At least one edge groove is provided at the assembling edge of the precast foundation member, and bolt assembly holes are provided on the groove wall of the edge groove. The edge groove penetrates through the top of the precast foundation member and the corresponding assembling edge; at the joint of two adjacent precast foundation members, the edge grooves on the two assembling edges are oppositely communicated with each other to form an assembling groove. A connecting member is provided in the assembling groove, and bolt assembly holes are provided on the connecting member. The connecting member is respectively abutted against the groove walls of the corresponding two edge grooves and is fixedly connected to the abutted groove walls by bolts.

2. The prefabricated independent foundation according to claim 1, wherein: When the assembling groove is a first assembling groove with an annular groove wall, two plate-shaped connecting members are oppositely provided in the first assembling groove, and the two plate-shaped connecting members are respectively arranged across the joint; alternatively, an annular connecting member is provided in the first assembling groove.

3. The prefabricated independent foundation according to claim 1, wherein: At least part of the edge grooves are corner-edge grooves, and the corner-edge grooves penetrate through two adjacent assembling edges of the precast foundation member; at the joint of four adjacent precast foundation members, the four corner-edge grooves are communicated to form a second assembling groove with an annular groove wall; an annular connecting member is provided in the second assembling groove; alternatively, four plate-shaped connecting members are provided in the second assembling groove, and the four plate-shaped connecting members are respectively arranged across the joint.

4. The prefabricated independent foundation according to claim 1, wherein: At least one vertical stiffening rib is provided on the connecting member, and / or at least one horizontal stiffening rib is provided on the connecting member.

5. The prefabricated independent foundation according to claim 1, characterized in that: The precast foundation member is a square member.

6. The prefabricated independent foundation according to claim 1, wherein: At least one hollow-out groove is further provided on the precast foundation member, and the hollow-out groove is distributed at intervals with the edge groove.

7. The prefabricated independent foundation according to any one of claims 1 to 6, characterized in that: It includes a bottom foundation layer and an upper foundation layer, The bottom foundation layer is the assembled foundation layer, and the upper foundation layer includes one of the precast foundation members; Or both the bottom foundation layer and the upper foundation layer are the assembled foundation layers.

8. The prefabricated independent foundation according to claim 7, wherein: It further includes a plurality of assembled steel bars. Reinforcing bar passing holes are provided on the precast foundation member. The assembled steel bars are inserted into the bottom foundation layer through the upper foundation layer and are consolidated by cast-in-place concrete.

9. The prefabricated independent foundation according to claim 7, wherein: It further includes a short column, and the short column is connected to the upper foundation layer.

10. The prefabricated independent foundation according to claim 9, characterized in that: The short column is a precast member with connecting steel bars reserved at the bottom. A connecting groove is reserved on the upper foundation layer. The short column is supported on the upper foundation layer, and the connecting steel bars extend into the connecting groove and cast-in-place concrete is provided in the connecting groove.

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