Terrace system for reducing settlement of first-floor building terrace and construction method

Abstract

The invention discloses a terrace system for reducing settlement of a first floor building terrace, which is characterized in that the terrace system comprises a floor slab, a cushion layer, a ring beam, a constructional column, a bearing wall and a foundation beam, the floor slab is arranged at the lower part of the first floor, and the cushion layer is arranged below the floor slab; the ring beams are arranged on the periphery of the floor slab, and constructional columns are further arranged at the corners, the ends and the large-span middle position of the floor slab. The bearing wall is arranged on the lower portion of the ring beam, and a foundation beam is arranged below the bearing wall. Compared with the prior art, the rigid floor slab is arranged, the load of the rigid floor slab is directly transmitted to the pile foundation through the bearing wall and the foundation beam, and a backfill soil layer is completely bypassed. The settlement of the fill stratum has no influence on the surface of the floor (terrace), the problems of terrace settlement and cracking are fundamentally solved, the terrace system is independent, the design is simplified, and the terrace system is a self-contained system, is separated from a main body frame of a building and does not depend on the main body frame of the building. The influence on the design of the main body frame is avoided, and the design calculation of the floor structure is simplified. According to the terrace system, the ring beams and the constructional columns are arranged, so that differential settlement and temperature stress are effectively resisted, the terrace structure is higher in integrity, and the service life is longer.

Description

Technical Field

[0001] This application relates to the first floor building of a substation, and more particularly to a structural system for reducing the ground settlement of the first floor building. Background Technology

[0002] When the natural terrain of a substation area is low, the area needs to be raised to prevent equipment and buildings from being affected by floods. When there is a thick layer of soft soil on the site, the filling will cause significant settlement, which in turn will lead to settlement of the ground floor. Settlement of the floor in general rooms will affect the daily use of personnel, while settlement of the floor in equipment rooms will endanger the safe operation of the equipment.

[0003] In conventional ground floor construction, the bottom backfill is compacted in layers. However, this conventional layered compaction method has the following drawbacks: (1) When the backfill is compacted in layers, the backfill cannot be consolidated during construction, resulting in post-construction settlement. The thicker the backfill, the greater the post-construction settlement.

[0004] (2) When there is soft soil in the foundation, only the fill is compacted in layers. The soft soil at the bottom is not treated. Under the additional load, the soft soil will settle, causing the building floor to settle. Summary of the Invention

[0005] The purpose of this application is to provide a floor system and construction method for reducing the settlement of the building floor in the fill area of ​​the first floor.

[0006] This application discloses a floor system for reducing ground floor settlement, the floor system comprising: floor slabs, subbase, ring beams, structural columns, load-bearing walls, and foundation beams, wherein: The floor slab is located at the lower part of the first floor, and the subfloor is located below the floor slab; The ring beams are arranged around the floor slab, and structural columns are further provided at the corners, ends, and middle positions of the floor slab with larger spans; The load-bearing wall is located below the ring beam, and a foundation beam is installed below the load-bearing wall.

[0007] In a preferred embodiment, the floor slab is a reinforced concrete structure, and the diameter of the reinforcement bars in the floor slab is 1-14 mm, with a spacing of 80-120 mm.

[0008] In a preferred embodiment, the floor slab is located at -0.040m on the first floor and has a thickness of 30-50mm.

[0009] In a preferred embodiment, backfill soil is disposed beneath the cushion layer.

[0010] In a preferred embodiment, the foundation beam is connected to the foundation of the building.

[0011] In a preferred embodiment, the building foundation includes frame columns and frame column pile caps.

[0012] In a preferred embodiment, the floor slab is a double-layered, two-way structure.

[0013] Another aspect of this application discloses a method for constructing a flooring system, the method comprising the following steps: S1: The foundation beam and the frame column pile cap are cast simultaneously, and the reinforcing bars for the structural columns and load-bearing walls are reserved on the foundation beam; S2: Complete the reinforcement construction of structural columns and the masonry and plastering of load-bearing walls; S3: Indoor backfill compaction; S4: Pour the floor slab and subbase; S5: Complete the construction of the ring beam and floor slab reinforcement; S6: Concrete is poured for the ring beams, structural columns and floor slabs to complete the floor system.

[0014] The main advantages of this application are: (1) This invention completely solves the settlement problem. Specifically, it sets up a rigid floor slab and transfers its load directly to the pile foundation through the load-bearing walls and foundation beams, completely bypassing the backfill layer. The settlement of the backfill layer has no effect on the floor slab (ground surface), fundamentally solving the stubborn problems of ground settlement and cracking.

[0015] (2) The invention offers high safety: The entire force transmission path of the floor system of the invention is "floor slab → load-bearing wall → foundation beam → pile cap → pile foundation," which is clear and well-defined. The floor slab settlement is minimal, greatly improving the safety and load-bearing reliability of the floor system.

[0016] (3) The flooring system of the present invention is independent and has a simplified design. The flooring system is self-contained and separate from the main frame of the building, and does not depend on each other. This not only avoids the impact on the design of the main frame, but also simplifies the design calculation of the flooring structure itself.

[0017] (4) The flooring system of the present invention effectively resists uneven settlement and temperature stress by setting ring beams and structural columns, making the flooring structure more robust and its service life longer.

[0018] The specification of this application contains numerous technical features distributed across various technical solutions. Listing all possible combinations of these technical features (i.e., technical solutions) would make the specification excessively lengthy. To avoid this problem, the various technical features disclosed in the above-described invention, the various technical features disclosed in the following embodiments and examples, and the various technical features disclosed in the accompanying drawings can be freely combined to form various new technical solutions (all of which should be considered as described in this specification), unless such a combination of technical features is technically infeasible. For example, one example discloses feature A+B+C, and another example discloses feature A+B+D+E. Features C and D are equivalent technical means that serve the same function, and technically only one needs to be used; they cannot be used simultaneously. Feature E can technically be combined with feature C. Therefore, the solution A+B+C+D should not be considered as described because it is technically infeasible, while the solution A+B+C+E should be considered as described. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the battery room according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the layout of the -0.040m layer of a flooring system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the arrangement of the foundation beams and building foundation of a flooring system according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the flooring system.

[0020] Figure label: 1-Partition wall; 2-Floor slab; 3-Subbase; 4-Load-bearing wall; QL1-Ring beam; GZ1-Structural column; CT1-Frame column pile cap; JLL1-Foundation beam. Detailed Implementation

[0021] Through meticulous and in-depth research, the inventors of this invention have developed for the first time a floor system and its construction method for reducing ground floor settlement. Compared with existing technologies, this invention completely bypasses the backfill layer by setting up rigid floor slabs and transferring the load directly to the pile foundation through load-bearing walls and foundation beams. The settlement of the backfill layer has no impact on the floor slab surface, fundamentally solving the persistent problems of floor settlement and cracking. Furthermore, the floor system of this invention is independent and simplified in design. This floor system is self-contained, separate from the main building frame, and independent of each other. This not only avoids impacting the design of the main frame but also simplifies the design calculations of the floor structure itself. By setting up ring beams and structural columns, the floor system of this invention effectively resists uneven settlement and temperature stress, resulting in a stronger overall floor structure and a longer service life.

[0022] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the invention, but do not limit the invention in any way. It should be understood that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention. These modifications and improvements all fall within the scope of protection of the present invention.

[0023] Example Specifically, one embodiment of the present invention is as follows: Figure 1-4 As shown, it discloses a specific application scenario of the flooring system described in this invention: This embodiment applies to the battery room of a substation. Figure 1 The architectural drawing shows two battery rooms. Based on the equipment load, the floor of the battery room bears a load of 20 kPa. The backfill thickness beneath the floor is 2.3 m, and there is approximately 37 m of silt beneath the site. If the backfill at the bottom of the floor is compacted in layers, the floor settlement cannot meet the requirements of the batteries. Therefore, this scenario is suitable for the flooring system of this invention. The flooring system structure in this embodiment is as follows: Figure 2-4 As shown, it includes: Floor slab 2, foundation layer 3, ring beam QL1, structural column GZ1, load-bearing wall 4, and foundation beam JLL1, wherein: The overall structure of the flooring system is as follows: Figure 4 The floor slab 2 is located at the lower part of the first floor building, and a partition wall 1 is provided in the first floor. The cushion layer 3 is located below the floor slab 2. In this embodiment, the building surface layer is 40mm thick. A reinforced concrete floor slab 2 is installed at -0.040m, with a thickness of 150mm and reinforcement diameter of 12mm, spacing of 100mm, and double-layer bidirectional reinforcement. A cushion layer 3 is installed under the floor slab 2, and under the cushion layer 3 is backfill soil that has been compacted in layers. Optionally, in one embodiment, the thickness and reinforcement of the floor slab 2 are calculated and determined based on the usage load and room size.

[0024] The arrangement structure at -0.040m is as follows: Figure 2 As shown, the ring beam QL1 is arranged around the floor slab, and structural columns GZ1 are further provided at the corners, ends and middle positions of the floor slab with large spans to increase the stability of the overall structure. The load-bearing wall 4 is located below the ring beam QL1, and a foundation beam JLL1 is installed below the load-bearing wall 4.

[0025] In this embodiment, the foundation beam is connected to the foundation of the building, and the foundation of the building includes frame columns and frame column pile caps, which are the foundation of the building.

[0026] This embodiment also discloses a method for constructing the above-mentioned flooring system, the method comprising the following steps: S1: The foundation beam JLL1 and the frame column pile cap are cast at the same time, and the structural column GZ1 and the load-bearing wall 4 are reserved on the foundation beam JLL1; S2: Complete the reinforcement construction of structural column GZ1 and the masonry and plastering of load-bearing wall 4; S3: Indoor backfill compaction; S4: Pour floor slab 2 and foundation layer 3; S5: Complete the construction of ring beam QL1 and floor slab reinforcement 2; S6: Concrete is poured for the ring beam QL1, structural column GZ1 and floor slab 2 to complete the floor system.

[0027] Furthermore, it should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to a certain element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

Claims

1. A flooring system for reducing ground floor settlement, characterized in that, The floor system includes: floor slabs, subbase, ring beams, structural columns, load-bearing walls, and foundation beams, wherein: The floor slab is located below the rooms on the first floor, and the subfloor is located below the floor slab. The ring beams are arranged around the floor slab, and structural columns are further provided at the corners, ends, and middle positions of the floor slab with larger spans; The load-bearing wall is located below the ring beam, and a foundation beam is installed below the load-bearing wall.

2. The flooring system according to claim 1, characterized in that, The floor slab is a reinforced concrete structure, and the diameter of the reinforcement bars in the floor slab is generally 10~16 mm, with a spacing of 100~150 mm.

3. The flooring system according to claim 2, characterized in that, The floor slab is located below the surface layer of the first floor building, and the thickness of the surface layer is generally 30-50mm.

4. The flooring system according to claim 1, characterized in that, Backfill soil is placed under the cushion layer.

5. The flooring system according to claim 1, characterized in that, The foundation beam is connected to the foundation of the building.

6. The flooring system according to claim 5, characterized in that, The building foundation includes frame columns and pile caps.

7. The flooring system according to claim 1, characterized in that, The floor slab is a double-layer, two-way reinforced structure.

8. A method for constructing a flooring system as described in any one of claims 1-7, characterized in that, The construction method includes the following steps: S1: The foundation beam and the frame column pile cap are cast simultaneously, and structural column reinforcement is reserved on the foundation beam; S2: Complete the reinforcement construction of structural columns and the masonry and plastering of load-bearing walls; S3: Indoor backfill compaction; S4: Pour the floor slab and subbase; S5: Complete the construction of the ring beam and floor slab reinforcement; S6: Concrete is poured for the ring beams, structural columns and floor slabs to complete the floor system.

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