Pile foundation cushion layer construction method

Abstract

The invention relates to the technical field of building engineering, in particular to a pile foundation cushion layer construction method which comprises the following steps: S1, preparation before construction; s2, pile top cleaning; s3, selecting and proportioning a cushion material, wherein a concrete material is selected from a mixture of C40-grade high-performance concrete, aggregate and an environment-friendly material; s4, pile foundation construction; s5, cushion layer construction, wherein a prefabricated cushion layer module is adopted; intelligent monitoring: in the cushion construction process, introducing an intelligent monitoring technology, for example, using a wireless sensor network (WSN) to monitor the cushion construction quality in real time; s6, construction quality control and acceptance; and S7, waste recovery. According to the construction method, the construction efficiency and quality of the pile foundation cushion layer can be further improved, the influence on the environment is reduced, the sustainable development requirement is met, meanwhile, economic and feasible factors are fully considered, and the implementation feasibility and effectiveness of the construction method are ensured.

Description

Technical Field

[0001] The invention relates to a pile foundation cushion layer construction method, in particular to a pile foundation cushion layer construction method, and belongs to the technical field of building engineering. Background Art

[0002] Construction engineering is a broad concept involving many aspects: construction engineering refers to engineering facilities built with building materials for all production, life and environmental governance. In a narrow sense, it mainly refers to various houses and their affiliated structures, such as apartments, villas, schools, hospitals, etc., and also includes buildings such as roads and railways. Construction engineering mainly includes the following types of projects: housing engineering: industrial construction engineering; transportation construction engineering; water conservancy construction engineering, etc.; among them, pile foundation cushion is a more important part of construction engineering. The pile foundation cushion construction method is suitable for a variety of occasions and scenarios such as insufficient foundation bearing capacity, the need to control settlement, soft foundation, special structural requirements, crossing water bodies and soft soil layers, and construction conditions. The pile foundation cushion refers to a layer of material located at the bottom of the pile cap foundation. Its main functions include leveling, protecting the foundation and transferring loads. However, the existing pile foundation cushion construction method still needs to be improved in terms of efficiency and quality of pile foundation cushion construction, as well as its impact on the environment.

[0003] Therefore, it is urgent to improve the pile foundation cushion construction method to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to provide a pile foundation cushion construction method, which can further improve the efficiency and quality of pile foundation cushion construction, reduce the impact on the environment, and meet the requirements of sustainable development. At the same time, the construction method also fully considers the economic and feasibility factors to ensure the feasibility and effectiveness of its implementation.

[0005] In order to achieve the above object, the main technical solution adopted by the present invention includes: a pile foundation cushion construction method, comprising the following steps:

[0006] S1: Preparation before construction: Understand the geological conditions and surrounding environment to prepare for subsequent construction; prepare the required construction materials and equipment, cushion materials, compaction tools, measuring instruments, etc.;

[0007] S2: Pile top cleaning: Before the pile top cushion construction, the concrete slag and impurities on the pile top shall be thoroughly cleaned; the foundation shall be treated by non-vibration static pressure method, including excavation, filling, compaction, etc.;

[0008] S3: Selection and proportion of cushion materials: Select appropriate cushion materials according to the structural design requirements and the actual site conditions; if soil materials are selected, the stability and bearing capacity of the soil need to be considered; if concrete is selected, the proportion needs to be determined according to the concrete strength grade; concrete material selection: C40 grade high-performance concrete, aggregate and environmentally friendly material mixture;

[0009] S4: Pile foundation construction: Pile foundation positioning: Determine the location and spacing of the pile foundation and position it according to the design requirements;

[0010] Drilling: Based on the positioning of the pile foundation, the drilling work of the pile foundation holes is carried out. The depth and diameter of the drilling holes shall be determined according to the design requirements;

[0011] Grouting and barrel filling: pouring concrete into the holes of pile foundation to ensure the bearing capacity and stability of the pile foundation;

[0012] S5: Cushion construction:

[0013] 1. Mattress laying: After the pile foundation grouting is completed, the mattress laying work is carried out: prefabricated cushion modules are used; the selection and laying methods of prefabricated cushion modules are as follows:

[0014] Selection of cushion materials: Select appropriate cushion materials according to design requirements, such as concrete, sand, etc.;

[0015] Control of cushion thickness: Control the thickness of cushion according to design requirements to ensure that the bearing capacity and stability requirements are met;

[0016] Pad laying method: according to the design requirements, lay the pad material evenly on the pile foundation, and pay attention to the close connection between the materials;

[0017] Intelligent monitoring: During the cushion construction process, intelligent monitoring technology is introduced, such as using wireless sensor networks (WSN) to monitor the cushion construction quality in real time;

[0018] 2. Pile foundation solidification: Wait for the concrete of the pile foundation cushion layer to fully solidify to ensure that the bearing capacity and stability of the pile foundation meet the design requirements;

[0019] S6: Construction quality control and acceptance:

[0020] Check the density of the mattress layer;

[0021] Check the material quality and mixing ratio of the mattress layer;

[0022] Check the bonding between the pile foundation and the cushion layer;

[0023] Conduct necessary tests;

[0024] S7: Waste recycling: Treat and recycle construction waste for recycling and reuse.

[0025] Preferably, the material in S1 is graded crushed stone or other cushion material that meets the design requirements, ensuring that its quality and gradation meet the specifications, and preparing sufficient materials to meet the construction requirements.

[0026] Preferably, the aggregate in S3 is environmentally friendly aggregate, and the environmentally friendly materials include: LC5.0 lightweight aggregate concrete, dry-mixed ceramsite lightweight aggregate concrete, rubber cushion, plastic cushion, modified asphalt waterproof membrane and PVDF self-adhesive waterproof membrane.

[0027] Preferably, the environmentally friendly aggregate uses processed construction waste or industrial waste as aggregate, which meets the use requirements after being processed by crushing, screening and other processes, and can adopt recycled aggregate concrete (RAC) technology to crush the waste concrete and use it as aggregate for new concrete.

[0028] Preferably, the manufacturing method of the prefabricated cushion module in S5 is as follows:

[0029] S5.1: Preparation: Determine the design dimensions, materials, strength grade and other requirements of the prefabricated cushion modules and prepare them according to the design drawings and engineering requirements;

[0030] Prepare the prefabrication site, make sure it is flat and dry, and lay a layer of plastic film, evenly spread a layer of fine sand on it, with a thickness of no more than 5mm, scrape it flat and compact it before proceeding to the next step;

[0031] S5.2: Material preparation: Prepare fine stone concrete or other suitable materials with the same strength grade as the foundation according to design requirements;

[0032] Prepare other necessary auxiliary materials, such as steel bars, iron wire, cement mortar, etc.

[0033] S5.3: Prefabricated module production:

[0034] 1. Prefabricate the hollow module according to the size shown in the design drawing, and use fine stone concrete to prefabricate a single 25mm thick thin plate to assemble the module; its height can be 100mm higher than the hole depth, so as to prevent the concrete from flowing into the hole when pouring the foundation concrete;

[0035] 2. Make the frame of the cushion module in the prefabrication site according to the predetermined size and shape using molds or manual methods;

[0036] 3. Lay fine stone concrete or other materials in the frame and add necessary auxiliary materials to increase the strength and stability of the module;

[0037] 4. Use a vibrator or other tools to vibrate the concrete evenly to ensure the density and uniformity of the concrete;

[0038] 5. After the concrete reaches the designed strength level, demoulding is performed. At this point, the cushion module has been preliminarily manufactured;

[0039] S5.4: Post-processing: The cushion module after demoulding should be maintained by spraying water, covering with wet cloth, etc. to improve the strength and durability of the module.

[0040] Preferably, the method for hoisting the prefabricated cushion module in S5 includes: transporting the prefabricated module to the construction site by a transport vehicle and quickly installing it by hoisting equipment.

[0041] Preferably, the monitoring content in S5 includes key parameters such as cushion thickness, flatness, strength, etc. Through data analysis, problems in the construction process can be discovered in time and adjustments can be made.

[0042] The present invention has at least the following beneficial effects:

[0043] 1. During the construction of the pile foundation cushion, the concrete material selection uses C40 grade high-performance concrete, aggregate and environmentally friendly material mixture, which can not only greatly improve its noise reduction and sound insulation effect, but also has strong durability, which can greatly improve the service life of the pile foundation. Environmentally friendly materials are used to reduce the negative impact on the environment and improve the sustainable performance of the cushion. The use of prefabricated cushion modules during construction can improve construction efficiency and quality control, and can reduce noise, pollution and traffic interference at the construction site, while improving the consistency and stability of the cushion. At the same time, intelligent monitoring is used throughout the construction process to monitor the cushion construction quality in real time, and real-time monitoring of key parameters such as cushion construction quality, thickness, flatness, etc. Through data analysis and early warning, the construction process and parameters can be adjusted in time to ensure the cushion construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0045] Figure 1 It is a schematic diagram of the construction process of the pile foundation cushion layer of the present invention;

[0046] Figure 2 It is a schematic diagram of the manufacturing process of the prefabricated cushion module of the present invention. DETAILED DESCRIPTION

[0047] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0048] like Figure 1-Figure 2 As shown, the pile foundation cushion construction method provided in this embodiment includes the following steps:

[0049] S1: Preparation before construction: Understand the geological conditions and surrounding environment to prepare for subsequent construction; prepare the required construction materials and equipment, cushion materials, compaction tools, measuring instruments, etc.; select a suitable construction environment, consider surrounding geological conditions, groundwater level and other factors, and ensure the stability and safety of construction;

[0050] Material selection: Graded crushed stone or other cushion materials that meet the design requirements, ensure that their quality and gradation meet the specifications, and prepare sufficient materials to meet construction needs;

[0051] S2: Pile top cleaning: Before the pile top cushion construction, the concrete slag and impurities on the pile top shall be thoroughly cleaned; during cleaning, care shall be taken to avoid damage to the pile top, ensure the surface of the pile top is flat and clean, and the foundation shall be treated with the vibration-free static pressure method, including excavation, filling, tamping, etc., to ensure that the bearing capacity and stability of the foundation meet the requirements;

[0052] S3: Selection and proportion of cushion materials: Select appropriate cushion materials according to the structural design requirements and the actual site conditions; if soil materials are selected, the stability and bearing capacity of the soil need to be considered; if concrete is selected, the proportion needs to be determined according to the concrete strength grade; concrete material selection: C40 grade high-performance concrete, aggregate and environmentally friendly material mixture;

[0053] Aggregates are environmentally friendly, including: LC5.0 lightweight aggregate concrete, dry-mixed ceramsite lightweight aggregate concrete, rubber cushion, plastic cushion, modified asphalt waterproof membrane and PVDF self-adhesive waterproof membrane. The use of the above materials can greatly improve the noise reduction and sound insulation effect, and has strong durability, which can greatly improve the service life of the pile foundation; environmentally friendly aggregates use processed construction waste or industrial waste as aggregates, which meet the use requirements after crushing, screening and other processes, and can use recycled aggregate concrete (RAC) technology to crush waste concrete and use it as aggregate for new concrete. Environmentally friendly materials or recyclable materials are used to reduce the negative impact on the environment and improve the sustainable performance of the cushion. According to the needs of the project, high-performance concrete with a specific ratio can be further developed to optimize its mechanical properties and environmental adaptability;

[0054] S4: Pile foundation construction: Pile foundation positioning: Determine the location and spacing of the pile foundation and position it according to the design requirements;

[0055] Drilling: Based on the positioning of the pile foundation, the drilling work of the pile foundation holes is carried out. The depth and diameter of the drilling holes shall be determined according to the design requirements;

[0056] Grouting and barrel filling: pouring concrete into the holes of pile foundation to ensure the bearing capacity and stability of the pile foundation;

[0057] S5: Cushion construction:

[0058] 1. Pad laying: After the pile foundation grouting is completed, the pad laying work is carried out: prefabricated pad modules are used; the selection and laying method of the pads must be carried out in accordance with the design requirements to ensure the bearing capacity and isolation effect of the pad layer; the selection and laying method of the prefabricated pad modules are as follows:

[0059] Selection of cushion materials: Select appropriate cushion materials according to design requirements, such as concrete, sand, etc.;

[0060] Control of cushion thickness: Control the thickness of cushion according to design requirements to ensure that the bearing capacity and stability requirements are met;

[0061] Pad laying method: according to the design requirements, lay the pad material evenly on the pile foundation, and pay attention to the close connection between the materials;

[0062] The method of making the prefabricated cushion module is as follows:

[0063] S5.1: Preparation: Determine the design dimensions, materials, strength grade and other requirements of the prefabricated cushion modules and prepare them according to the design drawings and engineering requirements;

[0064] Prepare the prefabrication site, make sure it is flat and dry, and lay a layer of plastic film, evenly spread a layer of fine sand on it, with a thickness of no more than 5mm, scrape it flat and compact it before proceeding to the next step;

[0065] S5.2: Material preparation: Prepare fine stone concrete or other suitable materials with the same strength grade as the foundation according to design requirements;

[0066] Prepare other necessary auxiliary materials, such as steel bars, iron wire, cement mortar, etc.

[0067] S5.3: Prefabricated module production:

[0068] 1. Prefabricate the hollow module according to the size shown in the design drawing, and use fine stone concrete to prefabricate a single 25mm thick thin plate to assemble the module; its height can be 100mm higher than the hole depth, so as to prevent the concrete from flowing into the hole when pouring the foundation concrete;

[0069] 2. Make the frame of the cushion module in the prefabrication site according to the predetermined size and shape using molds or manual methods;

[0070] 3. Lay fine stone concrete or other materials in the frame and add necessary auxiliary materials to increase the strength and stability of the module;

[0071] 4. Use a vibrator or other tools to vibrate the concrete evenly to ensure the density and uniformity of the concrete;

[0072] 5. After the concrete reaches the designed strength level, demoulding is performed. At this point, the cushion module has been preliminarily manufactured;

[0073] S5.4: Post-treatment: The cushion module after demoulding should be maintained by spraying water, covering with wet cloth, etc. to improve the strength and durability of the module;

[0074] The lifting method of the prefabricated cushion module includes: the prefabricated module is transported to the construction site by a transport vehicle and quickly installed by lifting equipment. By prefabricating the cushion module in the factory and then transporting it to the construction site for assembly, the construction efficiency and quality control can be improved; this method can reduce noise, pollution and traffic interference at the construction site, while improving the consistency and stability of the cushion;

[0075] Intelligent monitoring: During the cushion construction process, intelligent monitoring technology is introduced, such as using wireless sensor networks (WSN) to monitor the cushion construction quality in real time;

[0076] The monitoring content includes key parameters such as cushion thickness, flatness, and strength. Through data analysis, problems in the construction process can be discovered in time and adjustments can be made. Intelligent monitoring equipment, such as sensors and data acquisition systems, are introduced during the cushion construction process to monitor the cushion construction quality, thickness, flatness and other key parameters in real time. Through data analysis and early warning, construction technology and parameters can be adjusted in time to ensure the cushion construction quality.

[0077] 2. Pile foundation solidification: Wait for the concrete of the pile foundation cushion layer to fully solidify to ensure that the bearing capacity and stability of the pile foundation meet the design requirements;

[0078] S6: Construction quality control and acceptance:

[0079] Check the density of the cushion layer: Use a static pressure plate or other appropriate tools to test the cushion layer to ensure that the density of the cushion layer meets the requirements;

[0080] Check the material quality and mixing ratio of the cushion layer: confirm that the material of the cushion layer meets the standard requirements and the mixing ratio is correct;

[0081] Check the bonding between the pile foundation and the cushion layer: ensure that the bonding between the pile foundation and the cushion layer is firm and reliable, without hollows, cracks, etc.;

[0082] Carry out necessary tests: use load-bearing test, penetration test, etc. to verify the performance and quality of the mattress layer;

[0083] S7: Waste recycling: Treatment and recycling of construction waste, and recycling and reuse of it can greatly reduce resource waste and environmental pollution.

[0084] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0085] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0086] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A pile foundation cushion construction method, characterized in that: The steps include: S1: Preparation before construction: Understand the geological conditions and surrounding environment to prepare for subsequent construction; prepare the required construction materials and equipment, cushion materials, compaction tools, measuring instruments, etc.; S2: Pile top cleaning: Before the pile top cushion construction, the concrete slag and impurities on the pile top shall be thoroughly cleaned; the foundation shall be treated by non-vibration static pressure method, including excavation, filling, compaction, etc.; S3: Selection and proportion of cushion materials: Select appropriate cushion materials according to the structural design requirements and the actual site conditions; if soil materials are selected, the stability and bearing capacity of the soil need to be considered; if concrete is selected, the proportion needs to be determined according to the concrete strength grade; concrete material selection: C40 grade high-performance concrete, aggregate and environmentally friendly material mixture; S4: Pile foundation construction: Pile foundation positioning: Determine the location and spacing of the pile foundation and position it according to the design requirements; Drilling: Based on the positioning of the pile foundation, the drilling work of the pile foundation holes is carried out. The depth and diameter of the drilling holes shall be determined according to the design requirements; Grouting and barrel filling: pouring concrete into the holes of pile foundation to ensure the bearing capacity and stability of the pile foundation; S5: Cushion construction:

1. Mattress laying: After the pile foundation grouting is completed, the mattress laying work is carried out: prefabricated cushion modules are used; the selection and laying methods of prefabricated cushion modules are as follows: Selection of cushion materials: Select appropriate cushion materials according to design requirements, such as concrete, sand, etc.; Control of cushion thickness: Control the thickness of cushion according to design requirements to ensure that the bearing capacity and stability requirements are met; Pad laying method: according to the design requirements, lay the pad material evenly on the pile foundation, and pay attention to the close connection between the materials; Intelligent monitoring: During the cushion construction process, intelligent monitoring technology is introduced, such as using wireless sensor networks (WSN) to monitor the cushion construction quality in real time; 2. Pile foundation solidification: Wait for the concrete of the pile foundation cushion layer to fully solidify to ensure that the bearing capacity and stability of the pile foundation meet the design requirements; S6: Construction quality control and acceptance: Check the density of the mattress layer; Check the material quality and mixing ratio of the mattress layer; Check the bonding between the pile foundation and the cushion layer; Conduct necessary tests; S7: Waste recycling: Treat and recycle construction waste for recycling and reuse.

2. A pile foundation cushion construction method according to claim 1, characterized in that: The materials in S1 are graded crushed stones or other cushion materials that meet the design requirements, ensuring that their quality and gradation meet the specifications, and preparing sufficient materials to meet construction needs.

3. A pile foundation cushion construction method according to claim 1, characterized in that: The aggregate in S3 is environmentally friendly aggregate, and the environmentally friendly materials include: LC5.0 lightweight aggregate concrete, dry-mixed ceramsite lightweight aggregate concrete, rubber cushion, plastic cushion, modified asphalt waterproof membrane and PVDF self-adhesive waterproof membrane.

4. A pile foundation cushion construction method according to claim 1, characterized in that: The environmentally friendly aggregate uses processed construction waste or industrial waste as aggregate, and meets the use requirements after being processed by processes such as crushing and screening. It can also adopt recycled aggregate concrete (RAC) technology to crush the waste concrete and use it as aggregate for new concrete.

5. A pile foundation cushion construction method according to claim 1, characterized in that: The manufacturing method of the prefabricated cushion module in S5 is as follows: S5.1: Preparation: Determine the design dimensions, materials, strength grade and other requirements of the prefabricated cushion modules and prepare them according to the design drawings and engineering requirements; Prepare the prefabrication site, make sure it is flat and dry, and lay a layer of plastic film, evenly spread a layer of fine sand on it, with a thickness of no more than 5mm, scrape it flat and compact it before proceeding to the next step; S5.2: Material preparation: Prepare fine stone concrete or other suitable materials with the same strength grade as the foundation according to design requirements; Prepare other necessary auxiliary materials, such as steel bars, iron wire, cement mortar, etc. S5.3: Prefabricated module production:

1. Prefabricate the hollow module according to the size shown in the design drawing, and use fine stone concrete to prefabricate a single 25mm thick thin plate to assemble the module; its height can be 100mm higher than the hole depth, so as to prevent the concrete from flowing into the hole when pouring the foundation concrete; 2. Make the frame of the cushion module in the prefabrication site according to the predetermined size and shape using molds or manual methods; 3. Lay fine stone concrete or other materials in the frame and add necessary auxiliary materials to increase the strength and stability of the module; 4. Use a vibrator or other tools to vibrate the concrete evenly to ensure the density and uniformity of the concrete; 5. After the concrete reaches the designed strength level, demoulding is performed. At this point, the cushion module has been preliminarily manufactured; S5.4: Post-processing: The cushion module after demoulding should be maintained by spraying water, covering with wet cloth, etc. to improve the strength and durability of the module.

6. A pile foundation cushion construction method according to claim 1, characterized in that: The method for hoisting the prefabricated cushion module in S5 includes: transporting the prefabricated module to the construction site by a transport vehicle and quickly installing it by hoisting equipment.

7. A pile foundation cushion construction method according to claim 1, characterized in that: The monitoring contents in S5 include key parameters such as cushion thickness, flatness, and strength. Through data analysis, problems in the construction process can be discovered in time and adjustments can be made.

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