Sinking terrace lifting method

Abstract

The invention relates to the technical field of jacking and leveling of subsidence terraces or subsidence concrete plates, in particular to a subsidence terrace lifting method. Mounting holes and grouting holes are formed in the sunken concrete terrace at intervals, and the mounting holes all penetrate through the concrete layer; the jacking device is placed in the mounting hole; a jacking part and a connecting part are arranged, the jacking part is installed on the sinking terrace through the connecting part, a jacking space is defined between the jacking part and the sinking terrace, and the top of the jacking device is located in the jacking space; the sinking terrace is jacked, and the sinking terrace is lifted to the target height; the lifted subsidence terrace is subjected to grouting; the jacking device, the jacking piece and the connecting piece are dismantled, and secondary grouting is conducted; the method is convenient to operate, construction time is effectively saved, and good practicability is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of lifting and leveling a sunken floor or a sunken concrete slab, and in particular to a method for lifting a sunken floor. Background Art

[0002] In soft soil areas, the ground is severely unevenly settled due to large-scale backfilling of pond slag or soil, resulting in ground subsidence. Ground subsidence is not conducive to urban construction and can easily cause the foundation of buildings to be unstable, leading to the collapse of houses. When the ground subsidence is more serious, it will damage urban facilities, causing engineering facilities to sink, crack, deform, or even collapse.

[0003] There are many methods for lifting subsidence floors in the prior art, such as: breaking up the subsidence floor and rebuilding it, injecting expandable polyurethane foam to lift the subsidence floor, compacting grouting to lift the subsidence floor, etc. However, most of these subsidence floor lifting technologies are currently cumbersome to operate and have a long construction period. Summary of the invention

[0004] The purpose of this application is to provide a method for lifting a sunken floor, which is easy to operate and shortens the construction period.

[0005] To achieve the above purpose, a method for lifting a sunken floor is adopted in this application, comprising:

[0006] Installing holes and grouting holes are provided at intervals on the sunken concrete floor, and both the installing holes and the grouting holes penetrate the concrete layer;

[0007] Placing the lifting device in the mounting hole;

[0008] A lifting member and a connecting member are provided, and the lifting member is installed on the sunken concrete floor through the connecting member, a lifting space is defined between the lifting member and the sunken concrete floor, and the top of the lifting device is located in the lifting space;

[0009] The sunken concrete floor is lifted to a target height by adopting a jacking step;

[0010] Grouting of the sunken concrete floor after lifting;

[0011] The jacking device, the jacking member and the connecting member are removed, and secondary grouting is performed.

[0012] As a preferred technical solution, the jacking device is a hydraulic jack.

[0013] As a preferred technical solution, the lifting member is an I-beam.

[0014] As a preferred technical solution, the connecting member is a steel bar, the steel bar is sleeved on the I-beam, and the steel bar is embedded in the sunken concrete floor, and the top of the hydraulic jack is connected to the bottom of the I-beam.

[0015] As a preferred technical solution, the lifting step includes:

[0016] The hydraulic jack is started, so that the lifting rod of the hydraulic jack is extended to lift the I-beam upward, and at the same time, the sunken concrete floor is lifted through the steel bars;

[0017] When the sunken concrete floor is lifted to the target height, the hydraulic jack is suspended, and the sunken concrete floor will not fall back.

[0018] As a preferred technical solution, the removal of the lifting device, the lifting member and the connecting member includes:

[0019] Removing the I-beam and the steel bars;

[0020] The hydraulic jack is depressurized, the jacking rod of the hydraulic jack is retracted into the hydraulic jack, and the hydraulic jack is removed.

[0021] As a preferred technical solution, the grouting of the lifted sunken concrete floor specifically includes: injecting concrete into the grouting hole.

[0022] As a preferred technical solution, the secondary grouting specifically includes: injecting concrete into the installation hole.

[0023] As a preferred technical solution, the concrete is foamed concrete.

[0024] The method for lifting a sunken floor in the present application is easy to operate, can be quickly constructed, effectively saves construction time, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present application. In addition, unless otherwise specified, the drawings are intended only to conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Among them: 1. Sunken concrete floor; 2. Concrete floor cushion; 3. Hydraulic jack; 4. I-beam; 5. Steel bar; 6. Lifting space. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present application, it should be understood that the terms "front", "rear", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 application. In addition, in the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] See also Figure 1 , a method for lifting a sunken floor provided in an embodiment of the present application, comprising:

[0031] Installation holes and grouting holes are provided at intervals on the sunken concrete floor 1, and both the installation holes and the grouting holes penetrate the concrete layer;

[0032] Placing the lifting device in the mounting hole;

[0033] A lifting member and a connecting member are provided, and the lifting member is installed on the sunken concrete floor through the connecting member, a lifting space 6 is defined between the lifting member and the sunken concrete floor, and the top of the lifting device is located in the lifting space 6;

[0034] The sunken concrete floor is lifted to a target height by adopting a jacking step;

[0035] Grouting of the sunken concrete floor after lifting;

[0036] The jacking device, the jacking member and the connecting member are removed, and secondary grouting is performed.

[0037] In this embodiment, the diameter of the mounting hole and the grouting hole is preferably 0.3m, the interval between two adjacent mounting holes is 3m, and the interval between two adjacent grouting holes is 100m. This arrangement is conducive to the concrete quickly filling the interior of the sunken concrete floor and reducing the grouting time. In addition, multiple jacking devices are started at the same time to lift multiple jacking parts, thereby driving the sunken concrete floor to lift, and then grouting the sunken concrete floor after lifting, which is easy to operate and effectively shortens the construction time.

[0038] Furthermore, the lifting device is a hydraulic jack 3. In this embodiment, the hydraulic jack 3 adopts the existing technology, and its working principle is well known to those skilled in the art, and will not be introduced in detail in this application.

[0039] Further, the lifting member is an I-beam 4. The I-beam 4 is preferably No. 18 I-beam 4, which is a common steel material and has good physical and mechanical properties, which is conducive to cost saving.

[0040] Furthermore, the connecting member is a steel bar 5, the steel bar 5 is sleeved on the I-beam 4, and the steel bar 5 is embedded on the sunken concrete floor, and the top of the hydraulic jack 3 is connected to the bottom of the I-beam 4. Specifically, a hole is drilled on the sunken concrete floor, and then a high-strength embedding glue is injected, and then the steel bar 5 is inserted into the hole. After the glue is cured, the steel bar 5 is bonded to the sunken concrete floor as a whole, and the steel bar 5 is sleeved on the I-beam 4. This setting method not only has a good connection strength, but also is simple to make.

[0041] Furthermore, the lifting step includes:

[0042] Start the hydraulic jack 3, so that the lifting rod of the hydraulic jack 3 extends to lift the I-beam 4 upward, and at the same time drive the sunken concrete floor to be lifted through the steel bar 5;

[0043] When the sunken concrete floor is lifted to the target height, the hydraulic jack 3 is suspended, and the sunken concrete floor will not fall back.

[0044] Further, the dismantling of the lifting device, the lifting member and the connecting member comprises:

[0045] Remove the I-beam 4 and the steel bar 5;

[0046] The hydraulic jack 3 is depressurized, the lifting rod of the hydraulic jack 3 is retracted into the hydraulic jack 3, and the hydraulic jack 3 is removed.

[0047] Furthermore, the grouting of the lifted sunken concrete floor specifically includes: injecting concrete into the grouting hole. First, the sunken concrete floor is grouted as a whole to fill the empty positions inside the sunken concrete floor, and the sunken concrete floor can be lifted after the concrete solidifies.

[0048] Further, the secondary grouting specifically includes: injecting concrete into the installation hole. After the lifting device and the like are removed, secondary grouting is performed at the removed position to ensure the flatness of the sunken concrete floor after lifting, and the sunken concrete floor after lifting can also be trimmed.

[0049] Furthermore, the concrete is foamed concrete. Foamed concrete is a new type of energy-saving building material, which has the advantages of light weight, good thermal insulation, low water absorption, and convenient construction. The use of foamed concrete for grouting can play a positive role in improving the stability and durability of the sunken concrete floor, and can achieve good economic and environmental benefits.

[0050] In summary, the method for lifting a sunken floor provided in this embodiment has simple steps, is convenient and quick to operate, can effectively shorten the construction period, and has good economy and practicality.

[0051] This specification discloses the present application with reference to the accompanying drawings, and also enables those skilled in the art to implement the present application, including making and using any device or system, using suitable materials, and using any combined method. The scope of the present application is defined by the technical solution for protection, and includes other examples that occur to those skilled in the art. As long as such other examples include structural elements that are not different from the literal language of the technical solution for protection, or such other examples contain equivalent structural elements that are not substantially different from the literal language of the technical solution for protection, such other examples should be considered to be within the scope of protection determined by the technical solution for protection of the present application.

Claims

1. A method for lifting a sunken floor, characterized in that: include: Installing holes and grouting holes are provided at intervals on the sunken concrete floor, and both the installing holes and the grouting holes penetrate the concrete layer; Placing the lifting device in the mounting hole; A lifting member and a connecting member are provided, and the lifting member is installed on the sunken concrete floor through the connecting member, a lifting space is defined between the lifting member and the sunken concrete floor, and the top of the lifting device is located in the lifting space; The sunken concrete floor is lifted to a target height by adopting a jacking step; Grouting of the sunken concrete floor after lifting; The jacking device, the jacking member and the connecting member are removed, and secondary grouting is performed.

2. The method for lifting a subsided floor as claimed in claim 1, characterized in that: The jacking device is a hydraulic jack.

3. The method for lifting a subsided floor as claimed in claim 2, characterized in that: The lifting member is an I-beam.

4. The method for lifting a subsided floor as claimed in claim 3, characterized in that: The connecting piece is a steel bar, the steel bar is sleeved on the I-beam, and the steel bar is embedded in the sunken concrete floor, and the top of the hydraulic jack is connected to the bottom of the I-beam.

5. The method for lifting a subsided floor as claimed in claim 4, characterized in that: The lifting step comprises: The hydraulic jack is started, so that the lifting rod of the hydraulic jack is extended to lift the I-beam upward, and at the same time, the sunken concrete floor is lifted through the steel bars; When the sunken concrete floor is lifted to the target height, the hydraulic jack is suspended, and the sunken concrete floor will not fall back.

6. The method for lifting a subsided floor as claimed in claim 5, characterized in that: The dismantling of the lifting device, the lifting member and the connecting member comprises: Removing the I-beam and the steel bars; The hydraulic jack is depressurized, the jacking rod of the hydraulic jack is retracted into the hydraulic jack, and the hydraulic jack is removed.

7. The method for lifting a subsided floor as claimed in claim 1, characterized in that: The grouting of the lifted sunken concrete floor specifically includes: injecting concrete into the grouting hole.

8. The method for lifting a subsided floor as claimed in claim 7, characterized in that: The secondary grouting specifically includes: injecting concrete into the installation hole.

9. The method for lifting a subsided floor as claimed in claim 8, characterized in that: The concrete is foamed concrete.

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