Foundation construction method of gravity type foundation structure

Abstract

The invention discloses a foundation construction method of a gravity type foundation structure, which comprises the following steps: foundation pretreatment, evaluation of bearing capacity and soil layer distribution of a foundation according to geological characteristics of a target sea area, and improvement of bearing capacity and compactness of the foundation by adopting deep stirring or high-pressure grouting based on an evaluation result. Foundation installation is conducted, specifically, foundation structural parts are accurately manufactured in a prefabricating field according to design requirements, and the prefabricated foundation structural parts are accurately installed on the pretreated foundation through a crane and a positioning system; later maintenance: establishing a maintenance system. According to the foundation construction method of the gravity type foundation structure, by optimizing the foundation treatment steps, the bearing capacity and compactness of the foundation are remarkably improved, reliable guarantee is provided for stable installation of the gravity type foundation structure, the construction period is greatly shortened through combination of prefabrication in a prefabrication field and field installation, and the construction efficiency is improved. The dependence on a severe construction environment is reduced, and the overall construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation construction, and in particular to a foundation construction method of a gravity-type foundation structure. Background Art

[0002] Traditional gravity foundation construction methods have many limitations in ground treatment, foundation installation and subsequent maintenance. Especially in sea areas with complex geological conditions, strong winds and waves, and large changes in water depth, traditional methods often cannot guarantee the stability of the foundation structure and the safety of construction, resulting in extended construction period, increased costs, and difficulties in subsequent maintenance. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a foundation construction method for a gravity-based foundation structure, the purpose of which is to provide a new foundation construction method that can adapt to complex environments and improve construction efficiency and quality.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] A method for constructing a foundation of a gravity-based foundation structure comprises the following steps:

[0006] S1: Foundation pretreatment: according to the geological characteristics of the target sea area, the bearing capacity and soil layer distribution of the foundation are evaluated. Based on the evaluation results, deep mixing or high-pressure grouting is used to improve the bearing capacity and density of the foundation;

[0007] S2: Foundation installation: Precisely manufacture foundation structural parts according to design requirements in the prefabrication yard, and use cranes and positioning systems to accurately install the prefabricated foundation structural parts on the pre-treated foundation;

[0008] S3: Post-maintenance: Establish a maintenance system, including regular inspections, monitoring data analysis, and repair and reinforcement measures.

[0009] Furthermore, the foundation pretreatment comprises the following steps:

[0010] S11: Geological condition assessment, assess the geological conditions of the area where the foundation is located;

[0011] S12: Foundation reinforcement treatment: when the foundation bearing capacity does not meet the requirements, the foundation is reinforced;

[0012] S13: Leveling the foundation. After the foundation reinforcement is completed, the foundation is leveled;

[0013] Furthermore, the basic installation includes the following steps:

[0014] S21: Foundation prefabrication, the foundation structure is prefabricated in the prefabrication yard;

[0015] S22: Foundation transportation: transporting the prefabricated foundation to the construction site;

[0016] S23: Foundation positioning and installation: At the construction site, use a total station and a level to determine the exact location and elevation of the foundation; use a floating crane to lift the foundation and sink it on the leveled ground according to the measured position;

[0017] S24: Foundation filling and fixing: after the foundation is installed in place, fill it with sand or gravel, and then pour the concrete top plate;

[0018] S25: Quality inspection and acceptance: after the foundation installation is completed, the foundation quality is inspected and accepted.

[0019] Furthermore, the post-maintenance comprises the following steps:

[0020] S31: Regular inspection, regular inspection of gravity foundation structure;

[0021] S32: Monitoring data analysis, by installing settlement meters, inclinometers and stress-strain sensors, real-time monitoring of settlement, inclination, stress-strain parameters of gravity foundation structures;

[0022] S33: Crack treatment: If cracks are found in the gravity base structure or foundation, use cement mortar or epoxy resin to repair and reinforce the cracks;

[0023] S34: Structural reinforcement: If the gravity-based foundation structure has insufficient bearing capacity and reduced stability, add support structures, reinforce connectors, and use carbon fiber cloth or steel plates for reinforcement.

[0024] S35: Record and analyze, record the data of each inspection and monitoring, and analyze and compare;

[0025] S36: Emergency plan formulation, formulation of emergency response procedures, emergency material preparation and emergency personnel training emergency plans.

[0026] Furthermore, in step S11, the geological condition assessment includes soil type and bearing capacity assessment.

[0027] Furthermore, in step S12, the reinforcement methods include pile foundation method, preloading method and reinforcement method.

[0028] Furthermore, in step S13, the leveling process includes layered rolling, filling and compaction.

[0029] Furthermore, in step S25, the foundation quality inspection includes the size, position, elevation of the foundation and the density of the filling material.

[0030] Furthermore, in step S31, the gravity-based foundation structure inspection includes foundation settlement, foundation integrity and tightness of connectors.

[0031] The beneficial effects of the present invention are:

[0032] The foundation construction method of a gravity foundation structure of the present invention significantly improves the bearing capacity and density of the foundation by optimizing the foundation treatment steps, providing reliable guarantee for the stable installation of the gravity foundation structure. The combination of prefabrication in the prefabrication site and on-site installation greatly shortens the construction period, reduces dependence on harsh construction environments, improves overall construction efficiency, reduces on-site workload and material waste, and effectively controls project costs through precise prefabrication and efficient installation technology. The good post-maintenance system ensures the long-term stable operation of the gravity foundation structure in complex environments and extends its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A flow chart of the foundation construction method of the gravity-based foundation structure of the present invention;

[0034] Figure 2 It is a flow chart of foundation pretreatment of the present invention;

[0035] Figure 3 It is the basic installation flow chart of the present invention;

[0036] Figure 4 It is a post-maintenance flow chart of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0038] like Figures 1 to 4 As shown, a foundation construction method for a gravity-based foundation structure comprises the following steps:

[0039] S1: Foundation pretreatment: evaluate the bearing capacity and soil distribution of the foundation according to the geological characteristics of the target sea area. Based on the evaluation results, deep mixing or high-pressure grouting is used to improve the bearing capacity and density of the foundation.

[0040] S11: Geological condition assessment: Conduct a detailed assessment of the geological conditions of the target sea area, including the soil types in the area where the foundation is located, such as clay, sand, rock, etc., and assess the bearing capacity of these soil types to determine the maximum load that the foundation can withstand;

[0041] S12: Foundation reinforcement treatment: when the foundation bearing capacity does not meet the requirements, the foundation is reinforced. The reinforcement methods include pile foundation method, preloading method and reinforcement method. The pile foundation method is to increase the bearing capacity of the foundation by driving prefabricated piles or cast-in-place piles into the foundation; the preloading method is to apply a preloading load on the foundation to consolidate the foundation soil, thereby improving the bearing capacity; the reinforcement method is to add reinforcing materials such as geogrids or geotextiles into the foundation to improve the shear strength and bearing capacity of the foundation;

[0042] S13: Foundation leveling: After the foundation reinforcement, the foundation is leveled. The leveling process includes layered rolling, filling and compaction. A certain thickness of filling materials, such as sand, gravel, etc., are laid on the foundation. Then, a roller is used to roll and compact the filling materials in layers to ensure that the flatness and density of the foundation meet the design requirements.

[0043] S2: Foundation installation: Precisely manufacture foundation structural parts according to design requirements in the prefabrication yard, and use cranes and positioning systems to accurately install the prefabricated foundation structural parts on the pre-treated foundation.

[0044] S21: Foundation prefabrication: In the prefabrication yard, the foundation structural parts are precisely manufactured according to the design requirements, suitable materials are selected, manufacturing processes are formulated, quality control is carried out, etc. The prefabricated foundation structural parts should meet the design requirements and have good durability and stability;

[0045] S22: Foundation transportation: transporting the prefabricated foundation to the construction site;

[0046] S23: Foundation positioning and installation. At the construction site, use a total station and a level to determine the exact location and elevation of the foundation. Use a floating crane to lift the foundation and sink it on the leveled ground according to the measured position. During the sinking process, control the sinking speed and position of the foundation to ensure that the foundation can be accurately installed at the target location.

[0047] S24: Foundation filling and fixing, after the foundation is installed in place, fill materials such as sand or gravel are filled to fill the gap between the foundation and the foundation. Then, pour the concrete top plate to fix the foundation and increase its stability.

[0048] S25: Quality inspection and acceptance. After the foundation is installed, the foundation quality is inspected and accepted. The foundation quality inspection includes the size, position, elevation of the foundation and the density of the filling material.

[0049] S3: Post-maintenance: Establish a maintenance system, including regular inspections, monitoring data analysis, and repair and reinforcement measures.

[0050] S31: Regular inspection: Regular inspection of gravity foundation structures, including ground settlement, foundation integrity and tightness of connections;

[0051] S32: Monitoring data analysis, by installing settlement meters, inclinometers and stress-strain sensors, real-time monitoring of settlement, inclination, stress-strain parameters of gravity foundation structures;

[0052] S33: Crack treatment: If cracks are found in the gravity base structure or foundation, use cement mortar or epoxy resin to repair and reinforce the cracks;

[0053] S34: Structural reinforcement: If the gravity-based foundation structure has insufficient bearing capacity and reduced stability, add support structures, reinforce connectors, and use carbon fiber cloth or steel plates for reinforcement.

[0054] S35: Record and analyze, record the data of each inspection and monitoring, and analyze and compare;

[0055] S36: Emergency plan formulation, formulation of emergency response procedures, emergency material preparation and emergency personnel training emergency plans.

[0056] The foundation construction method of a gravity foundation structure of the present invention significantly improves the bearing capacity and density of the foundation by optimizing the foundation treatment steps, providing reliable guarantee for the stable installation of the gravity foundation structure. The combination of prefabrication in the prefabrication site and on-site installation greatly shortens the construction period, reduces dependence on harsh construction environments, improves overall construction efficiency, reduces on-site workload and material waste, and effectively controls project costs through precise prefabrication and efficient installation technology. The good post-maintenance system ensures the long-term stable operation of the gravity foundation structure in complex environments and extends its service life.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A foundation construction method for a gravity-based foundation structure, characterized in that: The following steps are involved: S1: Foundation pretreatment: according to the geological characteristics of the target sea area, the bearing capacity and soil layer distribution of the foundation are evaluated. Based on the evaluation results, deep mixing or high-pressure grouting is used to improve the bearing capacity and density of the foundation; S2: Foundation installation: Precisely manufacture foundation structural parts according to design requirements in the prefabrication yard, and use cranes and positioning systems to accurately install the prefabricated foundation structural parts on the pre-treated foundation; S3: Post-maintenance: Establish a maintenance system, including regular inspections, monitoring data analysis, and repair and reinforcement measures.

2. A method for foundation construction of a gravity-based foundation structure according to claim 1, characterized in that: The foundation pretreatment comprises the following steps: S11: Geological condition assessment, assess the geological conditions of the area where the foundation is located; S12: Foundation reinforcement treatment: when the foundation bearing capacity does not meet the requirements, the foundation is reinforced; S13: Leveling the foundation. After the foundation reinforcement is completed, the foundation is leveled.

3. A method for foundation construction of a gravity-based foundation structure according to claim 1, characterized in that: The basic installation includes the following steps: S21: Foundation prefabrication, the foundation structure is prefabricated in the prefabrication yard; S22: Foundation transportation: transporting the prefabricated foundation to the construction site; S23: Foundation positioning and installation: At the construction site, use a total station and a level to determine the exact location and elevation of the foundation; use a floating crane to lift the foundation and sink it on the leveled ground according to the measured position; S24: Foundation filling and fixing: after the foundation is installed in place, fill it with sand or gravel, and then pour the concrete top plate; S25: Quality inspection and acceptance: after the foundation installation is completed, the foundation quality is inspected and accepted.

4. The method for foundation construction of a gravity-based foundation structure according to claim 1, characterized in that: The post-maintenance comprises the following steps: S31: Regular inspection, regular inspection of gravity foundation structure; S32: Monitoring data analysis, by installing settlement meters, inclinometers and stress-strain sensors, real-time monitoring of settlement, inclination, stress-strain parameters of gravity foundation structures; S33: Crack treatment: If cracks are found in the gravity base structure or foundation, use cement mortar or epoxy resin to repair and reinforce the cracks; S34: Structural reinforcement: If the gravity-based foundation structure has insufficient bearing capacity and reduced stability, add support structures, reinforce connectors, and use carbon fiber cloth or steel plates for reinforcement. S35: Record and analyze, record the data of each inspection and monitoring, and analyze and compare; S36: Emergency plan formulation, formulation of emergency response procedures, emergency material preparation and emergency personnel training emergency plans.

5. The method for foundation construction of a gravity-based foundation structure according to claim 2, characterized in that: In step S11, the geological condition assessment includes soil type and bearing capacity assessment.

6. A method for foundation construction of a gravity-based foundation structure according to claim 2, characterized in that: In the step S12, the reinforcement methods include pile foundation method, preloading method and reinforcement method.

7. A method for foundation construction of a gravity-based foundation structure according to claim 2, characterized in that: In the step S13, the leveling process includes layered rolling, filling and compaction.

8. The method for foundation construction of a gravity-based foundation structure according to claim 3, characterized in that: In step S25, the foundation quality inspection includes the size, position, elevation of the foundation and the density of the filling material.

9. The method for foundation construction of a gravity-based foundation structure according to claim 1, characterized in that: In step S31, the gravity-based foundation structure inspection includes the foundation settlement, foundation integrity and the tightness of the connectors.

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