Additional equipment mounting structure based on existing foundation

Abstract

The utility model discloses an additional equipment mounting structure based on existing foundations, which comprises a plurality of existing foundations, a groove is dug on an overburden layer among the existing foundations, the groove extends to the upper part of the bases of the existing foundations, the groove is filled with a foundation bearing layer positioned on the outer sides of the existing foundations, and the foundation bearing layer is arranged on the outer side of the foundation bearing layer. A groove is formed in the foundation bearing layer, a concrete cushion layer covering the foundation bearing layer is arranged in the groove, a raft is arranged on the concrete cushion layer, and additional equipment is arranged on the top of the raft. The foundation bearing layers overhung on the outer sides of the existing foundations are arranged on the existing foundations to support the additional equipment, so that the load of the additional equipment can be effectively transmitted out of the existing foundations, uneven settlement caused by the fact that the weight of the additional equipment is transmitted to the foundations is effectively avoided, and structural safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of construction engineering, in particular to an additional equipment installation structure based on an existing foundation. Background Art

[0002] In various buildings, it is often necessary to add additional equipment with heavier weight to the existing buildings, such as outdoor water tanks, air-conditioning equipment, boiler equipment, etc.

[0003] In the existing method, as shown in the utility model patent with authorization announcement number CN215907072U, it is to directly dig on the existing building and set up a seismic isolation device to install the new equipment.

[0004] This structure will add extra load to the existing foundation, which may easily cause uneven sedimentation of the existing foundation and affect the safety of the structure. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to provide an additional equipment installation structure based on the existing foundation.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] An additional equipment installation structure based on an existing foundation includes multiple existing foundations. A groove is dug on the covering layer between the multiple existing foundations, and the groove extends above the bases of the several existing foundations. The groove is filled with a foundation bearing layer located outside the several existing foundations. A concrete cushion layer covering the foundation bearing layer is arranged in the groove, a raft plate is arranged on the concrete cushion layer, and additional equipment is arranged on the top of the raft plate.

[0008] Preferably, in the additional equipment installation structure based on the existing foundation, the foundation bearing layer is a sand and gravel layer with a thickness between 250mm and 300mm.

[0009] Preferably, in the additional equipment installation structure based on the existing foundation, a cushion layer is provided in the groove on the covering layer located above the base of the existing foundation.

[0010] Preferably, in the additional equipment installation structure based on the existing foundation, the mattress layer is a polystyrene board.

[0011] Preferably, in the additional equipment installation structure based on the existing foundation, the thickness of the mattress layer is between 50-100 mm.

[0012] Preferably, in the additional equipment installation structure based on the existing foundation, the concrete cushion layer is C15 concrete.

[0013] Preferably, in the additional equipment installation structure based on the existing foundation, the edge of the raft plate adopts an edge sealing structure.

[0014] Preferably, in the additional equipment installation structure based on the existing foundation, the bottom surface of the raft has a height difference, and the high surface and the low surface are transitioned by a slope with a slope angle of 60°.

[0015] Preferably, in the additional equipment installation structure based on the existing foundation, a distance is maintained between the raft and the columns of the existing foundation, and a bare soil layer is provided between the raft and the columns.

[0016] Preferably, in the additional equipment installation structure based on the existing foundation, the additional equipment is arranged on a portion of the raft that is located outside the existing foundation.

[0017] The advantages of the technical solution of the utility model are mainly reflected in:

[0018] The utility model provides a foundation bearing layer cantilevered on the outside of the existing foundation to support the additional equipment, thereby effectively transferring the load of the additional equipment to the outside of the existing foundation, effectively avoiding the weight of the additional equipment being transferred to the foundation to cause uneven settlement, which is beneficial to ensuring structural safety.

[0019] The utility model adopts a thicker sand and gravel cushion layer to effectively ensure the supporting force, thereby providing stable support.

[0020] The utility model provides a cushion layer located on the base of the existing foundation below the concrete cushion layer, which can effectively reduce shock and thus ensure the safety of the existing foundation.

[0021] The utility model enables the bottom surface of the raft to have a height difference and connects them through a slope, which is beneficial to a smooth transition of the force and improves the safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view schematic diagram of the additional equipment installation structure based on the existing foundation of the utility model;

[0023] Figure 2 It is a partial cross-sectional view of the additional equipment installation structure based on the existing foundation of the utility model;

[0024] Figure 3 It is a partial cross-sectional view of the raft of the utility model. DETAILED DESCRIPTION

[0025] The purpose, advantages and features of the present invention will be illustrated and explained through the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0026] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] The following is an explanation of the additional equipment installation structure based on the existing foundation disclosed by the utility model in conjunction with the accompanying drawings. Figure 1 As shown, it includes a plurality of existing foundations 100, and the existing foundations 100 include a base 110 and columns 120 arranged on the base 110. The number of the existing foundations 100 in this embodiment is illustrated by taking 3 as an example and their distribution in a right-angled triangle. Of course, in other embodiments, the number of the existing foundations 100 may be more, or distributed in other forms, for example, the number of the existing foundations 100 is 4 and distributed in a square.

[0028] As attached Figure 1 , Attachment Figure 2As shown, a groove 300 is dug on the covering layer 200 between the three existing foundations 100, and the groove 300 is a square groove, and includes a deeper first groove portion 310 and a shallower second groove portion 320, the first groove portion 310 is located on the outside of the three existing foundations 100, the second groove portion 320 is L-shaped, and extends to the top of the base 110 of the three existing foundations 100, and the second groove portion coincides with the lower right and lower left top corner areas of the bases of the two existing foundations above and maintains a certain distance from the columns of the two existing foundations above, the second groove portion coincides with the area on the base of the existing foundation below that is located on the right side of its column, and the second groove portion extends to the side of the column of the existing foundation below. The first groove portion 310 of the groove 300 is filled with a foundation bearing layer 400 located outside the existing foundations 100. The foundation bearing layer 400 is preferably a sand and gravel layer with a thickness of 250 mm to 300 mm, and the top of the foundation bearing layer 400 is close to the bottom of the second groove portion 320. In actual construction, the foundation bearing layer 400 should be tested according to the relevant requirements of the "Technical Specifications for Building Foundation Treatment" to ensure that it is qualified before proceeding to the next process, requiring the foundation bearing capacity characteristic value Fak = 60 kPa, and the compaction coefficient ≥ 0.97.

[0029] As attached Figure 2 As shown, a concrete cushion layer 500 covering the foundation bearing layer 400 is arranged in the groove 300, and the concrete cushion layer 500 is C15 concrete. The concrete cushion layer covers the entire groove 300, and a raft 600 is arranged on the concrete cushion layer 500. The reinforcement of the raft 600 is determined by calculation according to the specification. The edge of the raft 600 adopts an edge sealing structure, and the bottom surface of the raft 600 has a height difference, and the high surface 610 and the low surface 620 are transitioned by a slope 630 with a slope angle of 60°, as shown in the attached Figure 3 Correspondingly, the concrete cushion layer 500 is a groove-shaped structure matching the raft 600 .

[0030] As attached Figure 1 , Attachment Figure 2 As shown, the top of the raft 600 is provided with an additional device 700. At the same time, in order to reduce the load on the foundation as much as possible, the additional device 700 is arranged on the part of the raft 600 outside the existing foundation 100, that is, the additional device 700 can be arranged in the area where the foundation bearing layer is located. At the same time, connectors can be pre-embedded on the raft 600 so that the additional device 700 can be easily installed and fixed without drilling holes on the raft 600, which can ensure the stability of the structure.

[0031] As attached Figure 2As shown, in order to reduce the load of the additional equipment 700 transferred to the existing foundation, a cushion layer 800 is provided in the groove 300 on the covering layer above the base 110 of the existing foundation 100, that is, the cushion layer 800 is provided at the bottom of the second groove portion 320, and the cushion layer 800 is a polystyrene board, and the thickness of the cushion layer 800 is between 50-100mm, so that the vibration of the equipment during operation can be prevented from being transferred to the base 110 of the existing foundation 100 through the shock absorption and shock reduction capabilities of the polystyrene board itself.

[0032] As attached Figure 2 As shown, in order to prevent the equipment vibration from affecting the columns 120 of the existing foundation 100 , a distance is maintained between the raft 600 and the columns 120 of the existing foundation 100 , and a bare soil layer 900 is filled between the raft 600 and the columns 120 .

[0033] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. An additional equipment installation structure based on an existing foundation, comprising a plurality of existing foundations, characterized in that: A groove is dug on the covering soil layer between multiple existing foundations, and the groove extends above the bases of several existing foundations. The groove is filled with a foundation bearing layer located outside the several existing foundations. A concrete cushion layer covering the foundation bearing layer is arranged in the groove, a raft plate is arranged on the concrete cushion layer, and additional equipment is arranged on the top of the raft plate.

2. The additional equipment installation structure based on the existing foundation according to claim 1 is characterized in that: The basic bearing layer is a sand and gravel layer with a thickness between 250mm and 300mm.

3. The additional equipment installation structure based on the existing foundation according to claim 1 is characterized in that: A mattress layer is disposed in the recess on a cover layer over a base of the existing foundation.

4. The additional equipment installation structure based on the existing foundation according to claim 3 is characterized in that: The mattress layer is a polystyrene board.

5. The additional equipment installation structure based on the existing foundation according to claim 3 is characterized in that: The thickness of the mattress layer is between 50-100 mm.

6. The additional equipment installation structure based on the existing foundation according to claim 1 is characterized in that: The concrete cushion layer is C15 concrete.

7. The additional equipment installation structure based on the existing foundation according to claim 1 is characterized in that: The edge of the raft plate adopts an edge sealing structure.

8. The additional equipment installation structure based on the existing foundation according to claim 1 is characterized in that: The bottom surface of the raft has a height difference, and the high surface and the low surface are transitioned by a slope with a slope angle of 60°.

9. The additional equipment installation structure based on an existing foundation according to claim 1, characterized in that: A distance is maintained between the raft slab and the columns of the existing foundation, and a plain soil layer is provided between the raft slab and the columns.

10. The additional equipment installation structure based on an existing foundation according to any one of claims 1 to 8, characterized in that: The additional equipment is arranged on a portion of the raft that is located outside the existing foundation.

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