Protective foundation backfilling structure and backfilling construction method

Abstract

The invention discloses a protective foundation backfill structure and a backfill construction method, and belongs to the technical field of house building engineering.The protective foundation backfill structure and the backfill construction method comprise the following steps that S100, a foundation module and a ground beam are poured and constructed; s200, determining a side line of the frame column reserved cavity, and determining an outer ring side line of the template reserved cavity on the outer side of the side line of the frame column reserved cavity; s300, the outer ring side edge of the formwork reserved cavity serves as the internal control size, and a supporting moulding bed is built; s400, shielding cloth is arranged above the foundation module in a supported mode to shield the reserved cavity of the frame column; and S500, the backfill earthwork is backfilled, and the foundation module and the ground beam are covered. By means of the supporting moulding bed, it is guaranteed that filling soil does not invade the column head range in the process, follow-up column head cleaning work is reduced, meanwhile, the thickness of one formwork and the thickness of one wood brace back arris are reserved, the supporting moulding bed can serve as a positioning basis and a foot pressing measure for formwork installation, the follow-up formwork disassembling space is effectively guaranteed, the formwork assembling and disassembling efficiency is improved, and the formwork assembling and disassembling efficiency is improved. And rapid construction of the foundation reserved column formwork is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of housing construction engineering, and in particular, to a protective foundation backfill structure and a backfill construction method. In addition, the present application also relates to a backfill construction method applied to the protective foundation backfill structure. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present application. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present application.

[0003] At present, during the structural design stage of house buildings, the elevation of the foundation and foundation beam surface is often lowered. One reason is to meet the requirements of the foundation bearing layer, the other is to enhance the overall stability of the building and help disperse the load of the superstructure. Another is to provide a better installation environment for the layout of underground heating ditches and water supply and drainage pipelines, ensure the safety and stable operation of the pipelines, and provide guarantees for subsequent inspection and maintenance.

[0004] Under this design condition, the foundation surface will often be level with the beam surface, but the overall height of the foundation will be much higher than the beam. If the foundation is relatively dense, a large excavation method will be used on site for construction. After the construction of the concrete foundation and ground beam is completed, there will be more criss-crossing foundation frames.

[0005] In response to this situation, under normal circumstances, the following method is often used on site to backfill the interior core of the room: first use a small bulldozer to backfill the outer side foundation, then set up protection measures at the ground beam position, use steel plates or increase covering measures, and then small machinery moves in an orderly manner in a fixed planned area, using manual labor to assist in digging the soil on both sides. The overall elevation is based on the beam surface elevation to ensure that the fill surface is basically level with the beam surface, so as to achieve large-area backfilling of the center of the room.

[0006] The existing technical solutions have the following problems and disadvantages:

[0007] 1. The entire construction requires a large amount of labor, and each ground beam position requires protection construction, and the efficiency of the entire room core backfill is low;

[0008] 2. During the backfilling process of the indoor room core, the base surface of the reserved frame column reinforcement area will be polluted, causing the earth to scatter to the column head position of the frame column. A lot of manpower will be needed to clean the column head before the subsequent pouring of the frame column;

[0009] 3. The elevation control is strict, and the finished surface of the earth backfill elevation should not exceed the elevation of the foundation beam surface. At that time, water will accumulate in the foundation column head area, and after mixing with the soil, it will become mud, which is extremely troublesome to clean up.

[0010] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0011] In view of at least one of the above technical problems, the present application provides a protective foundation backfill structure, which can ensure that the backfill does not invade the column head range through the supporting formwork during the backfilling of the interior room core, thereby reducing the subsequent column head cleaning work. At the same time, the thickness of a template and a wooden beam back rib is reserved. The supporting formwork can be used as a positioning basis and pressure measure for the installation of the template, and effectively ensure the subsequent demolding space, speed up the installation and removal efficiency of the template, and realize the rapid construction of the foundation reserved column template.

[0012] At the same time, the present application also provides a backfill construction method applied to the above-mentioned protective foundation backfill structure.

[0013] According to one aspect of the present application, a protective foundation backfill structure is provided, including a foundation module, a ground beam, a supporting formwork, a shielding cloth and backfill earthwork:

[0014] The foundation module is used to be arranged under the indoor floor of the house. The supporting formwork is arranged on the foundation module and encloses a circle of template reserved cavity. The template reserved cavity is used to install the casting formwork of the frame column. The shielding cloth is supported above the foundation module. The shielding cloth is used to shield and protect the template reserved cavity and the preset height space extending upward along the template reserved cavity. The circular array of ground beams is arranged around the foundation module, and the backfill earth is filled around the foundation module and the ground beam and covers the foundation module and the ground beam.

[0015] In some embodiments of the present application, the elevation of the backfill surface is 14 to 16 cm higher than the elevation of the foundation surface of the foundation module.

[0016] In some embodiments of the present application, a circle of installation platforms is provided around the top surface of the basic module, and a circular array of ground beams is arranged on the installation platform.

[0017] In some embodiments of the present application, the top surface of the ground beam is flush with the top surface of the basic module.

[0018] In some embodiments of the present application, the protective foundation backfill structure further includes a steel support bracket, which is supported above the foundation module and is used to support and fix the shielding cloth.

[0019] In some embodiments of the present application, the supporting formwork is constructed of solid bricks.

[0020] According to another aspect of the present application, a backfill construction method is also provided, which is applied to the above-mentioned protective foundation backfill structure. The backfill construction method comprises the following steps:

[0021] S100, use concrete pouring to construct the foundation module and ground beam;

[0022] S200, determining the construction edge line of the frame column, and determining the outer circle edge line of the template reserved cavity outside the construction edge line of the frame column;

[0023] S300, using the outer edge of the reserved cavity of the template as the internal control size, build a circle of supporting molds;

[0024] S400, using a shielding cloth to be supported above the basic module to shield the template reserved cavity and the preset height space extending upward from the template reserved cavity;

[0025] S500, backfill the backfill soil and cover the foundation module and the ground beam.

[0026] In some embodiments of the present application, the width a between the construction edge line of the frame column and the outer circle edge line of the reserved cavity of the template in step S200 is the thickness of the template plus the thickness of the back rib of the wood beam.

[0027] In some embodiments of the present application, in step S400, the shielding cloth is used to shield the space within a height range of 1 m above the template reserved cavity.

[0028] In some embodiments of the present application, in step S500, the backfill earth is backfilled by combining an excavator and a bulldozer, the backfill surface elevation is 14 to 16 cm higher than the foundation surface elevation of the foundation module, and false soil is reserved on the top of the ground beam.

[0029] This application has the following beneficial effects:

[0030] The present application discloses a protective foundation backfill structure. When backfilling the soil in the center of an indoor room, a supporting mold is used to ensure that the backfilling process does not invade the column head range of the frame column, thereby reducing the subsequent column head cleaning work. At the same time, a template and a wooden back rib are reserved by setting a template reserved cavity. The supporting mold can be used as a positioning basis and a pressure foot measure for template installation, and the subsequent demolding space is effectively guaranteed, thereby accelerating the installation and removal efficiency of the template, and realizing the rapid construction of the indoor center of the room and frame columns. At the same time, a shielding cloth is supported above the foundation module to shield and protect the frame column reserved cavity, thereby preventing the soil from falling into the frame column reserved cavity during the mechanical backfilling process, thereby effectively avoiding the pollution of the frame column reserved cavity and ensuring the smooth installation of the frame column. By raising the elevation of the backfill soil, the protection of the ground beam and the foundation module during the backfilling process can be strengthened. By using the raised covering soil, the safety of the structure can be effectively guaranteed, thereby realizing a large-scale mechanical backfilling construction, reducing the input of labor, realizing mechanized operation as a whole, reflecting the concept of green construction, and achieving the purpose of reducing construction costs.

[0031] The backfill construction method of the present application also has the above-mentioned beneficial effects, and also includes breaking through traditional construction requirements, reducing the strict control requirements for earthwork elevation during the backfill process, improving the efficiency of backfilling, and effectively avoiding the formation of water accumulation in the column head area of ​​the frame column during backfilling, and even the phenomenon of mixed soil turning into mud, thereby reducing the labor and labor intensity of cleaning; the overall construction process of the present application does not require a large amount of labor, greatly increases the proportion of mechanical construction, effectively reduces the labor of workers, and is conducive to improving construction efficiency.

[0032] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, this application also has other purposes, features and advantages. The following will further describe this application in detail with reference to the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 is a schematic top view of a protective foundation backfill structure of a preferred embodiment of the present application;

[0035] Figure 2 yes Figure 1 An enlarged view of the local structure of the protective foundation backfill structure is shown;

[0036] Figure 3 yes Figure 1 A cross-sectional view of the protective foundation backfill structure shown along line AA;

[0037] Figure 4 yes Figure 3 An enlarged view of the local structure of the protective foundation backfill structure is shown;

[0038] Figure 5 yes Figure 1 A three-dimensional structural schematic diagram of a protective foundation backfill structure is shown;

[0039] Legend: 100, foundation surface elevation; 200, fill surface elevation; 300, indoor elevation; 1, foundation module; 11, installation platform; 2, ground beam; 3, support formwork; 4, frame column reserved cavity; 5, shielding cloth; 6, backfill; 7, template reserved cavity. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, but the present application can be implemented in a variety of different ways defined and covered below.

[0041] Figure 1 is a schematic top view of a protective foundation backfill structure of a preferred embodiment of the present application; Figure 2 yes Figure 1 An enlarged view of the local structure of the protective foundation backfill structure is shown; Figure 3 yes Figure 1 A cross-sectional view of the protective foundation backfill structure shown along line AA; Figure 4 yes Figure 3 An enlarged view of the local structure of the protective foundation backfill structure is shown; Figure 5 yes Figure 1 A three-dimensional structural schematic diagram of the protective foundation backfill structure shown.

[0042] A protective foundation backfill structure includes a foundation module 1, a ground beam 2, a supporting formwork 3, a shielding cloth 5 and backfill earth 6:

[0043] The basic module 1 is used to be arranged under the indoor floor of the house, the supporting formwork 3 is arranged on the basic module 1 and encloses a circle of template reserved cavity 7, the template reserved cavity 7 is used to install the casting formwork of the frame column, the shielding cloth 5 is supported above the basic module 1, the shielding cloth 5 is used to shield and protect the template reserved cavity 7 and the preset height space extending upward along the template reserved cavity 7, the ground beam 2 is arranged in a circular array around the basic module 1, and the backfill earth 6 is filled around the basic module 1 and the ground beam 2 and covers the basic module 1 and the ground beam 2.

[0044] The "shielding cloth 5" herein means the shielding cloth supported on the top of the basic module 1 by a steel support. In some embodiments, the shielding cloth 5 is made of geotextile commonly used on construction sites, which is beneficial to control construction costs.

[0045] In addition, a frame column reserved cavity 4 for pouring a frame column of a house is provided above the basic module 1 , and the frame column reserved cavity 4 is located in the template reserved cavity 7 .

[0046] The protective foundation backfill structure of the present application ensures that the column heads of the frame columns are not invaded during the backfilling process by supporting the mold 3 when the indoor core earth is backfilled, thereby reducing the subsequent column head cleaning work. At the same time, the thickness of a template and a wooden back rib is reserved by setting a template reserved cavity 7, so that the supporting mold 3 can be used as a positioning basis and a pressure foot measure for template installation, and the subsequent demolding space is effectively guaranteed, thereby speeding up the installation and removal efficiency of the template, and realizing the rapid construction of indoor core earth backfilling and frame columns; at the same time, a shield is supported above the foundation module 1 The retaining cloth 5 shields and protects the reserved cavity 4 of the frame column to prevent earth from falling into the reserved cavity 4 of the frame column during the mechanical backfilling process, which can effectively avoid contamination of the reserved cavity 4 of the frame column and ensure the smooth installation of the frame column; by raising the elevation of the backfill earth 6, the protection of the ground beam 2 and the foundation module 1 can be strengthened during the backfilling process, and the raised covering soil can effectively ensure the safety of the structure, thereby realizing large-scale mechanical backfilling construction, reducing labor input, realizing mechanized operation as a whole, reflecting the concept of green construction, and achieving the purpose of reducing construction costs.

[0047] Preferably, please refer to Figure 1 and 3 As shown, the fill surface elevation 200 of the backfill 6 is 14-16 cm higher than the foundation surface elevation 100 of the basic module 1. Preferably, a circle of mounting platforms 11 are provided around the top surface of the basic module 1, and the ground beams 2 are arranged in a circular array on the mounting platform 11. Specifically, the top surface of the ground beam 2 is flush with the top surface of the basic module 1.

[0048] It can be understood that the installation platform 11 on the basic module 1 can play a role in stably supporting the ground beam 2, facilitate the long-term stability of the ground beam 2 cast on the basic module 1, and help to ensure that the ground beam 2 remains flush with the top surface of the basic module 1, so as to ensure that the basic module 1 and the ground beam 2 play a role in stable support. By raising the elevation of the backfill 6 above the foundation module 1 and the ground beam 2 and canceling the strict control of the elevation of the backfill 6, the efficiency of the backfill construction can be greatly improved. At the same time, the protection of the ground beam 2 and the foundation module 1 can be strengthened during the backfill process. The use of the raised covering soil of about 15 cm can effectively ensure the safety of the structure, thereby realizing large-scale mechanical backfill construction, reducing labor input, and realizing mechanized operation as a whole. However, if the fill surface elevation 200 of the backfill 6 is lower than the foundation surface elevation 100 of the foundation module 1 by 14 cm, the structural strength is insufficient and there is a safety hazard; if the fill surface elevation 200 of the backfill 6 is higher than the foundation surface elevation 100 of the foundation module 1 by 16 cm, there will be problems such as material waste, increased construction volume, and increased covering soil weight.

[0049] At the same time, while raising the covering soil, the supporting formwork 3 and the shielding cloth 5 can shield and protect the reserved cavity 4 of the frame column, prevent earth from falling into the reserved cavity 4 of the frame column, and avoid water accumulation in the reserved cavity 4 and mixing with soil to form mud, thereby effectively reducing the workload of cleaning and ensuring the smooth progress of construction.

[0050] Preferably, the protective foundation backfill structure further includes a steel support bracket, which is supported above the basic module 1 and is used to support and fix the shielding cloth 5 .

[0051] It can be understood that the shielding cloth 5 can be stably supported and fixed on the basic module 1 through the steel support, ensuring the shielding and protection of the reserved cavity 4 of the frame column, and preventing the earth from falling into the reserved cavity 4 of the frame column when the indoor core is backfilled using an excavator later, causing contamination of the frame column head.

[0052] Preferably, the supporting mold 3 is built of solid bricks.

[0053] It can be understood that the support formwork 3 is formed by solid brick masonry, with low construction material cost and high construction efficiency, and can effectively control the thickness, height and other dimensions of the support formwork 3, ensure the correct positioning of the support formwork 3, ensure the width of the reserved template cavity 7, and ensure the smooth installation of the template.

[0054] According to another aspect of the present application, a backfill construction method is also provided, which is applied to the above-mentioned protective foundation backfill structure. The backfill construction method comprises the following steps:

[0055] S100, constructing the foundation module 1 and the ground beam 2 by pouring concrete;

[0056] S200, determining the construction edge line of the frame column, and determining the outer circle edge line of the template reserved cavity 7 outside the construction edge line of the frame column;

[0057] S300, using the outer edge of the template reserved cavity 7 as the internal control size, build a circle of supporting mold 3;

[0058] S400, using a shielding cloth 5 to be set above the basic module 1 to shield the template reserved cavity 7 and the preset height space extending upward from the template reserved cavity 7;

[0059] S500 , backfill the backfill earth 6 , and cover the foundation module 1 and the ground beam 2 .

[0060] The backfill construction method of the present application also has the above-mentioned beneficial effects, and also includes breaking through the traditional construction requirements, reducing the strict control requirements for the earthwork elevation during the backfill process, improving the efficiency of backfilling, and effectively avoiding the formation of water accumulation in the column head area of ​​the frame column during the backfilling, and even the phenomenon of mixed soil turning into mud, etc., reducing the labor and labor intensity of cleaning; the overall construction process of the present application does not require the use of a large amount of labor, greatly increases the proportion of mechanical construction, effectively reduces the labor of workers, and is conducive to improving the efficiency of construction. The present application can obtain better backfill safety quality and construction period guarantee for engineering entities with a foundation elevation of 100 below zero.

[0061] It should be noted that after the pouring construction of the foundation module 1 and the ground beam 2 is completed in step S100, the next construction step is carried out after the concrete strength reaches 75% to avoid damage to the foundation module 1, namely the ground beam 2, and ensure the smooth completion of the backfill construction in the center of the house.

[0062] Among them, the masonry of the supporting formwork 3 needs to ensure that the mortar joints are full, firstly to meet the strength requirements of the subsequent manual compaction of the surrounding earthwork, and secondly to prevent the earthwork from penetrating into the reserved cavity 4 of the frame column, causing unnecessary pollution to the area.

[0063] Preferably, in step S200, the width a between the construction edge line of the frame column and the outer circle edge line of the template reserved cavity 7 is the thickness of the template plus the thickness of the wooden beam back rib.

[0064] It can be understood that the template reserved cavity 7 can be used as the template installation area, and the supporting mold 3 can serve as the positioning basis for the template installation and can be used as a pressure measure. The template uses the wooden back ribs as a support system, and the width of the template reserved cavity 7 is sufficient to ensure the subsequent demolding space and speed up the installation and removal efficiency of the template.

[0065] Preferably, in step S400 , the shielding cloth 5 is used to shield the space within a height range of 1 m above the template reserved cavity 7 .

[0066] It can be understood that by setting a 1m high shielding cloth 5 in the frame column reserved cavity 4, it can prevent earth from falling into the frame column reserved cavity 4 during mechanical backfilling, and effectively avoid contamination of the frame column reserved cavity 4, i.e., the column head reserved steel bar area.

[0067] Preferably, in step S500 , the backfill earth 6 is backfilled by a combination of an excavator and a bulldozer, the backfill surface elevation 200 of the backfill earth 6 is 14 to 16 cm higher than the foundation surface elevation 100 of the foundation module 1 , and false soil is reserved on the top of the ground beam 2 .

[0068] It can be understood that by raising the backfill soil elevation, the protection of the ground beam 2 and the foundation module 1 can be strengthened during the backfill process. By raising the cover soil by about 15 cm, the structural safety can be effectively guaranteed, thereby realizing large-scale mechanical backfill construction, reducing labor input, realizing mechanized operation as a whole, greatly improving construction efficiency, reflecting the concept of green construction, and achieving the goal of reducing construction costs.

[0069] Among them, when the construction is carried out in a combination of excavators and bulldozers, the overall construction direction is from one side to the other, and the backfill of the entire site is promoted in an orderly manner. During the process, rollers are used for rolling and compacting. Small rammers are used for compacting around the foundation module 1 and the supporting tire formwork 3. Vibration rolling by rollers is strictly prohibited to prevent collapse. A thicker loose soil is reserved on the top of the ground beam 2 to prevent damage to the structure due to insufficient protection thickness after rolling.

[0070] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0071] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection of this application.

Claims

1. A protective foundation backfill structure, characterized in that: It includes a basic module (1), a ground beam (2), a supporting formwork (3), a shielding cloth (5) and backfill earth (6): The basic module (1) is used for being arranged under the indoor floor of a house, the supporting formwork (3) is arranged on the basic module (1) and encloses a circle of template reserved cavity (7), the template reserved cavity (7) is used for installing the casting formwork of the frame column, the shielding cloth (5) is supported above the basic module (1), the shielding cloth (5) is used for shielding and protecting the template reserved cavity (7) and the preset height space extending upward along the template reserved cavity (7), the ground beam (2) is arranged in a circular array around the basic module (1), and the backfill earth (6) is filled around the basic module (1) and the ground beam (2) and covers the basic module (1) and the ground beam (2).

2. A protective foundation backfill structure according to claim 1, characterized in that: The fill surface elevation (200) of the backfill earth (6) is 14 to 16 cm higher than the foundation surface elevation (100) of the foundation module (1).

3. A protective foundation backfill structure according to claim 1, characterized in that: A circle of mounting platforms (11) are provided around the top surface of the basic module (1), and the ground beams (2) are arranged in a circular array on the mounting platform (11).

4. A protective foundation backfill structure according to claim 3, characterized in that: The top surface of the ground beam (2) is flush with the top surface of the basic module (1).

5. The protective foundation backfill structure according to claim 1, characterized in that: The protective foundation backfill structure also includes a steel bar support, which is supported above the foundation module (1) and is used to support and fix the shielding cloth (5).

6. A protective foundation backfill structure according to claim 1, characterized in that: The supporting mold (3) is built by solid bricks.

7. A backfill construction method, characterized in that: Applied to the protective foundation backfill structure as claimed in any one of claims 1 to 6, the backfill construction method comprises the following steps: S100, constructing the foundation module (1) and the ground beam (2) by pouring concrete; S200, determining the construction edge line of the frame column, and determining the outer edge line of the template reserved cavity (7) outside the construction edge line of the frame column; S300, using the outer edge of the template reserved cavity (7) as the internal control size, a circle of supporting mold (3) is built; S400, using a shielding cloth (5) to be supported above the basic module (1) to shield the template reserved cavity (7) and the preset height space extending upward from the template reserved cavity (7); S500, backfill the backfill earth (6) and cover the foundation module (1) and the ground beam (2).

8. A backfill construction method according to claim 7, characterized in that: In step S200, the width a between the construction edge line of the frame column and the outer edge line of the template reserved cavity (7) is the thickness of the template plus the thickness of the wooden beam back rib.

9. A backfill construction method according to claim 7, characterized in that: In step S400, the shielding cloth (5) is used to shield the space within a height range of 1m above the template reserved cavity (7).

10. A backfill construction method according to claim 7, characterized in that: In step S500, the backfill earth (6) is backfilled by combining an excavator and a bulldozer, the backfill earth (6) has a fill surface elevation (200) that is 14 to 16 cm higher than the foundation surface elevation (100) of the foundation module (1), and false earth is reserved on the top of the ground beam (2).

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