CN209891239U - Piston type foundation support structure - Google Patents

Abstract

The utility model provides a piston type foundation support structure, which comprises a ring wall, a raft plate and a boundary sealing layer; the cylindrical space at the radial inner side of the annular wall forms a filling space; the boundary sealing layer is laid along the radial inner side wall surface of the ring wall to form a cylinder-shaped structure with a sealed bottom and an open top, and the raft is installed in the cylinder-shaped structure; the raft plates can displace in the up-down direction; the radial edges of the rafts and the boundary sealing layer are in contact with each other, or a discharge gap is formed. The utility model discloses a piston type foundation support structure, can effectively the balance equipment all kinds of subsides that produce in installation or use, improve equipment operation stability.

Description

Piston type foundation support structure

technical field

The utility model relates to the field of equipment foundations and embedded parts, in particular to a piston foundation supporting structure.

Background technique

Before the construction of buildings and geotechnical structures, the self-weight stress caused by the gravity of the soil has already existed in the foundation. The loads of buildings and geotechnical structures are transmitted to the foundation through the bottom surface of the foundation or embankment, so that the original stress state of the natural soil layer changes. Shear deformation, resulting in vertical and lateral displacement of each point. The vertical deformation of the foundation surface is called foundation settlement, or foundation settlement.

In order to prevent or reduce the settlement of the equipment during the installation and use of the existing foundation, sand and gravel materials are used as the layer, supplemented by reinforced concrete embedded parts. However, in practical applications, uneven settlement is still prone to occur. During the installation of the equipment, continuous testing, monitoring and adjustment are required, and the construction is cumbersome and difficult.

Utility model content

Aiming at the defects in the prior art, the purpose of the present invention is to provide a piston-type foundation supporting structure.

The piston-type foundation support structure provided according to the utility model comprises a ring wall, a raft and a boundary sealing layer; the cylindrical space on the radially inner side of the ring wall forms a filling space;

The boundary sealing layer is laid along the radial inner side wall of the ring wall to form a cylinder-shaped structure with a sealed bottom and an open top, and the raft is installed in the cylinder-shaped structure; the raft can be displaced in the up-down direction;

The radial edges of the raft and the boundary seal are in contact with each other, or there is a discharge gap.

Preferably, a backfill soil layer is provided at the bottom of the inner space of the cylinder-shaped structure, and the raft is installed on the backfill soil layer.

Preferably, the boundary sealing layer comprises any one or more of the following structures: waterproof membrane, waterproof coating, and waterproof pouring layer.

Preferably, an asphalt coating is also included, and the asphalt coating covers both the ring wall and the top end face of the raft.

Preferably, the two end plates included in the radial direction of the ring wall respectively form a first ring plate and a second ring plate, and the first ring plate is located radially outside the second ring plate; the ring wall further comprises a top end plate and a second ring plate. bottom end plate;

The first ring plate, the second ring plate, the top end plate and the bottom end plate together form an annular pouring space, and a reinforcing rib member is arranged in the annular pouring space;

The top plate is provided with an adjustment part, and the adjustment part includes a sinking plate. In the height direction, the position of the sinking plate is lower than the position of the top plate, and the top plate forms a disconnection at the position of the adjustment part along the length extension direction. , and is connected to the sinking plate through the provided transition plate, and the sinking plate and the transition plate together form a groove structure; one or more adjustment parts are arranged along the circumferential direction of the ring wall.

Preferably, the top end plate includes a horizontal extension part and an inclined extension part; on the cross section of the ring wall, the first ring plate, the horizontal extension part, the inclined extension part, and the second ring plate are connected in sequence;

along the radial direction of the ring wall from outside to inside, the inclined extension extends downward;

The annular perfusion space is filled with backfill; the lower end of the bottom end plate is connected with a concrete cushion.

Preferably, the reinforcing rib member includes a wall rib, an annular rib and an S-bracing rib;

The wall-attaching rib is fastened and installed on the inner wall of any one of the following positions or any plurality of positions: the first ring plate, the second ring plate, the top end plate, and the bottom end plate;

The annular rib is installed on the wall-adhering rib and extends in a ring shape, and the S tie bar connects two different annular ribs.

Preferably, a settlement observation structure is provided on the ring wall, and the settlement observation structure includes a semicircular head and a round steel piece connected to each other, and the semicircular head is located on the radial outer side of the first ring plate;

In the direction of length extension, the round steel piece starts from the semi-circular head, and after extending downward, it is bent along the radial direction of the ring wall and extends into the annular perfusion space, and then bent in the circumferential direction of the ring wall.

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

1. The utility model can effectively balance various settlements generated during the installation or use of the equipment through the piston-type foundation support structure, and improve the operation stability of the equipment.

2. The use of a boundary sealing layer structure such as PE film can effectively achieve waterproof and anti-corrosion, and is also conducive to the thermal insulation of the overall equipment.

3. On the one hand, the asphalt layer can make the installation surface of the equipment more flat, and on the other hand, it has a sealing effect on the top of the cylinder structure. When the raft moves down, the backfill soil will enter the discharge gap but will not drain from the cylinder structure. leaked.

4. The setting of the inclined extension part avoids the large shear force on the asphalt pavement caused by the equipment during use.

5. Through the setting of the adjustment part, it is possible to adjust the uneven settlement during the preloading of water; after the preloading is completed, the corresponding groove structure of the adjustment part is filled with backfill soil to reduce or even avoid the impact of uneven settlement on the storage tank. The effect of verticality.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the top view of the ring wall in the embodiment of the utility model;

FIG. 2 is the left half of the cross-sectional view of the piston-type foundation support structure in the cross-sectional direction A-A of FIG. 1;

3 is a sectional view of the position of the adjustment part;

Figure 4 is a top view of the position of the settlement observation structure;

FIG. 5 is a cross-sectional view taken along the B-B direction of the plan view of the position of the settlement observation structure.

The figure shows:

Ring wall 910 Wall rib 921

First ring plate 911 Ring rib 922

The second ring plate 912 S tie bar 923

Top plate 913 Settlement observation structure 940

Bottom end plate 914 Dome head 941

Adjustment part 915 Round steel part 942

Sinking plate 916 Concrete cushion 960

Transition plate 917 Boundary sealing layer 971

Horizontal extension 918 Backfill 972

Inclined Extension 919 Raft 973

Reinforcing member 920 Asphalt cladding 974

Detailed ways

The present utility model will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

As shown in FIG. 2 , the piston-type foundation support structure provided by the present invention includes a ring wall 910, a raft 973 and a boundary sealing layer 971; the cylindrical space on the radial inner side of the ring wall 910 forms a filling space; the boundary The sealing layer 971 is laid along the radial inner side wall of the ring wall 910 to form a cylinder-shaped structure with a sealed bottom and an open top. The raft 973 is installed in the cylinder-shaped structure; the raft 973 can be displaced in the up-down direction; the raft 973 The radial edges of the s and the boundary seal layer 971 are in contact with each other, or there is a discharge gap. That is to say, the cylinder-shaped structure forms a structure similar to a piston cylinder, and the raft 973 forms a piston that moves inside the piston cylinder; the displacement of the raft 973 in the up-down direction is small, and it is floating, depending on the weight of the equipment Adaptive adjustment.

Preferably, a backfill soil layer 972 is provided at the bottom of the inner space of the cylinder-shaped structure, and the raft 973 is installed on the backfill soil layer 972 . The backfill layer 972 may be, for example, a structure of quicksand, and when the raft 973 moves downward, the quicksand will partially reach the discharge gap to accommodate the overall settlement. The boundary sealing layer 971 includes any one or more of the following structures: waterproof membrane, waterproof coating, and waterproof pouring layer. In the embodiment, the boundary sealing layer 971 is a waterproof membrane made of PE material, which has the effects of waterproofing and anti-corrosion. Preferably, the boundary sealing layer 971 can also be a structure of a non-waterproof member plus a waterproof coating; further preferably, the boundary sealing layer 971 can also be obtained by pouring a waterproof material, and is surrounded by the foundation pit and the ring wall 910. Pouring is performed on the inner surface of the space to obtain the waterproof structure of the cylinder structure. In addition, the piston-type foundation support structure further includes an asphalt coating 974 , which covers both the ring wall 910 and the top end face of the raft 973 . On the one hand, the asphalt coating 974 can form a flat equipment installation plane, and on the other hand, it also plays a role in sealing the interior of the cylinder-shaped structure, ensuring the stability of the overall structure, and at the same time, it can also achieve the effect of heat preservation.

As shown in FIG. 1 to FIG. 3 , in the embodiment, the two end plates included in the radial direction of the annular wall 910 respectively form a first annular plate 911 and a second annular plate 912 , and the first annular plate 911 is located in the second annular plate 911 . The radial outer side of the ring plate 912; the ring wall 910 also includes a top end plate 913 and a bottom end plate 914; the first ring plate 911, the second ring plate 912, the top end plate 913 and the bottom end plate 914 together form an annular filling space. A reinforcing rib member 920 is arranged in the pouring space; an adjustment part 915 is arranged on the top plate 913, and the adjustment part 915 includes a sinking plate 916. In the height direction, the position of the sinking plate 916 is lower than that of the top plate 913. position, the top plate 913 is disconnected at the position of the adjustment part 915 along the length extension direction, and is connected to the sinking plate 916 through the provided transition plate 917, and the sinking plate 916 and the transition plate 917 together form a groove structure; one or more The adjustment portions 915 are arranged along the circumferential direction of the ring wall 910 . The setting of the adjustment part 915 provides an adjustment structure for the uneven settlement of the foundation that may occur during the installation of the storage tank, reduces the workload of settlement calculation and storage tank structure design in the early stage of assembly, and improves the actual production of the storage tank. of stability.

Preferably, the top end plate 913 includes a horizontal extension part 918 and an inclined extension part 919; in the cross section of the ring wall 910, the first ring plate 911, the horizontal extension part 918, the inclined extension part 919, and the second ring plate 912 are in sequence Connection; in the radially outward-to-inward direction of the ring wall 910, the inclined extension 919 extends downward. In practical applications, the storage tank will be installed on the top of the horizontal extension portion 918, and the inclined extension portion 919 is arranged to avoid the storage tank from causing a large shear force at the bottom after filling.

As shown in FIG. 3 , the reinforcing rib member 920 includes a wall rib 921, an annular rib 922 and an S tie 923; the wall rib 921 is fastened and installed on the inner wall of any one of the following positions or any multiple positions: The first ring plate 911, the second ring plate 912, the top end plate 913, and the bottom end plate 914; the annular rib 922 is installed on the wall-adhering rib 921 and extends along the annular shape, and the S tie 923 connects two different annular Rib 922. Wherein, when the annular rib 922 passes through the adjusting portion 915, it should be avoided to be cut off, and other reinforcing bars can be added for reinforcement.

As shown in FIGS. 4 and 5 , a settlement observation structure 940 is provided on the ring wall 910 , and the settlement observation structure 940 includes a semicircular head 941 and a round steel piece 942 connected to each other, and the semicircular head 941 is located on the first ring plate 911 in the direction of length extension, the round steel piece 942 first starts from the semicircular head 941, and after extending downward, it is bent along the radial direction of the ring wall 910 and extends into the annular perfusion space, and then toward the ring wall 910 Bends in the circumferential direction. A plurality of settlement observation structures 940 are arranged along the circumferential direction of the ring wall 910 ; the positions of the settlement observation structures 940 and the adjustment part 915 are staggered from each other.

In a preferred example, the ring wall 910 can also be constructed of prefabricated panels that are spliced together.

The piston-type foundation support structure provided by the present invention has the following construction method, which includes the following steps: Step S1: Load the ring wall 910 into the foundation pit; Step S2: Lay the boundary sealing layer 971 on the diameter of the ring wall 910 In the filling space to the inside, the boundary sealing layer 971 is formed into a cylinder-shaped structure with a top opening and the interior is sealed and waterproof; step S3: fill the backfill soil layer 972 in the cylinder-shaped structure, and install the raft 973 on the backfill soil layer 972 ; Step S4 : laying an asphalt cladding 974 on top of the ring wall 910 and the raft 973 . Preferably, when a filling space is formed inside the ring wall 910, before step S4, the filling space is filled with backfill. Of course, if the ring wall 910 is only in the form of a prefabricated board structure, there is no reperfusion space, and the filling step is also omitted. Preferably, both the ring wall 910 and the raft 973 are assembled at the site where the foundation pit is located. When the cross-section of the equipment on the foundation is large, the on-site assembly can effectively reduce the transportation cost and assembly requirements; of course, for the equipment with small cross-section, The finished product can also be transported directly to the construction site.

The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily, provided that there is no conflict.

Claims (8)

1. A piston-type foundation support structure, characterized in that it comprises a ring wall (910), a raft (973) and a boundary sealing layer (971); the cylindrical space on the radially inner side of the ring wall (910) forms a filling space; The boundary sealing layer (971) is laid along the radial inner side wall of the ring wall (910) to form a cylinder-shaped structure with a sealed bottom and an open top, and the raft (973) is installed in the cylinder-shaped structure; the raft (973) Can produce displacement in the up and down direction; The radial edges of the raft (973) and the boundary seal layer (971) are in contact with each other, or there is a discharge gap. 2. The piston-type foundation support structure according to claim 1, wherein a backfill layer (972) is provided at the bottom of the inner space of the cylinder-shaped structure, and the raft (973) is installed on the backfill layer (972). 3. The piston-type foundation support structure according to claim 1, wherein the boundary sealing layer (971) comprises any one or more of the following structures: waterproof membrane, waterproof coating, and waterproof pouring layer. 4. The piston-type foundation support structure according to claim 1, characterized in that it further comprises an asphalt coating (974), and the asphalt coating (974) covers both the ring wall (910) and the raft (973) the top end face. 5. The piston-type foundation support structure according to claim 1, wherein the two end plates included in the radial direction of the ring wall (910) respectively form a first ring plate (911) and a second ring plate (912), the first ring plate (911) is located at the radial outer side of the second ring plate (912); the ring wall (910) further includes a top end plate (913) and a bottom end plate (914); The first ring plate (911), the second ring plate (912), the top end plate (913) and the bottom end plate (914) together form an annular filling space, and a reinforcing rib member (920) is arranged in the annular filling space; The top plate (913) is provided with an adjustment part (915), the adjustment part (915) includes a sinker plate (916), and in the height direction, the position of the sinker plate (916) is lower than the top plate (913) ), the top end plate (913) is disconnected at the position of the adjustment part (915) along the length extension direction, and is connected to the sinker plate (916) through the provided transition plate (917), and the sinker plate (916) is connected to the lower plate (916). The transition plates (917) together form a groove structure; one or more adjustment portions (915) are arranged along the circumferential direction of the ring wall (910). 6. The piston type foundation support structure according to claim 5, characterized in that the top plate (913) comprises a horizontal extension (918) and an inclined extension (919); the cross section at the ring wall (910) On the top, the first ring plate (911), the horizontal extension (918), the inclined extension (919), and the second ring plate (912) are connected in sequence; along the radial direction of the ring wall (910) from outside to inside, the inclined extension (919) extends downward; The annular perfusion space is filled with backfill; the lower end of the bottom end plate (914) is connected with a concrete cushion (960). 7. The piston-type foundation support structure according to claim 5, wherein the reinforcing rib member (920) comprises a wall rib (921), an annular rib (922), and an S rib (923); The wall rib (921) is fastened and installed on the inner wall of any one of the following positions or any multiple positions: the first ring plate (911), the second ring plate (912), the top end plate (913), the bottom end plate (914); The annular rib (922) is installed on the wall-adhering rib (921) and extends along the annular shape, and the S tie (923) connects two different annular ribs (922). 8. The piston-type foundation support structure according to claim 5, wherein a settlement observation structure (940) is provided on the ring wall (910), and the settlement observation structure (940) comprises semicircular heads connected to each other (941) and the round steel piece (942), the semicircular head (941) is located on the radially outer side of the first ring plate (911); In the direction of length extension, the round steel piece (942) first starts from the semicircular head (941), and after extending downward, it is bent along the radial direction of the ring wall (910) and extends into the annular perfusion space, and then goes toward the ring wall (910). The wall (910) is bent in the circumferential direction.

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