Method for improving one-time acceptance qualification rate of socket type reinforced concrete pipe connector
Through qualitative analysis and locking reasons, and determining and implementing countermeasures, the first-time acceptance pass rate of the plug-in reinforced concrete pipe interface is improved, the problems of low passing rate and rework cost are solved, and an efficient acceptance process is achieved.
Patent Information
- Application Number
- CN202411541079.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-02-28
AI Technical Summary
The pass rate of the one-time acceptance of the plug-in reinforced concrete pipe interface is low, resulting in an increase in the possibility of rework and related costs.
Through qualitative pipeline interface characteristics and acceptance requirements, the end reasons are locked, the main and secondary reasons are distinguished, and the countermeasures are determined based on the reasons, and the countermeasures are implemented to improve the acceptance pass rate. The specific steps include establishing a database, analyzing the problem of failure, determining the main causes, such as the installation flatness of the rubber water stop ring and the depth of the socket, formulating and implementing countermeasures, such as ensuring that the socket depth is not less than 60mm and replacing the unqualified rubber water stop ring.
It significantly improves the first-time acceptance pass rate of the plug-in reinforced concrete pipe interface, reduces the secondary repair costs of labor, machinery and materials caused by rework, and improves acceptance efficiency.
Smart Images
Figure CN119539571A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of engineering acceptance, and in particular relates to a method for improving the one-time acceptance qualification rate of a socket-and-spigot reinforced concrete pipe joint. Background Art
[0002] The most important part of the municipal pipe network quality acceptance is the quality of pipe installation. If the quality of pipe installation fails to meet the standards, it will cause defects such as pipe leakage, water accumulation, and deformation. The cost of dealing with such defects is extremely high, so controlling the quality of pipe installation is a very necessary and important part of the construction process. The construction cost of large-diameter reinforced concrete bell-and-spigot pipes in rainwater pipe networks is higher than that of other pipes, so controlling the construction quality of reinforced concrete pipes is of utmost importance. In order to ensure the quality of reinforced concrete bell-and-spigot pipes, in accordance with the requirements of 5.1.1 of the "Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering" (GB50268-2008), all reinforced concrete socket pipes must meet the quality standards of reinforced concrete pipe interfaces before they can be put into use. In the actual implementation process, the qualified rate of bell-and-spigot reinforced concrete pipe interfaces is low, which is lower than the requirements of the acceptance standards, and there is a possibility of rework. Summary of the invention
[0003] The purpose of the present invention is to provide a method for improving the first-time acceptance rate of socket-type reinforced concrete pipe joints in view of the deficiencies in the prior art, so as to reduce the secondary repair costs of labor, machinery and materials caused by rework.
[0004] A first aspect of the present invention provides a method for improving the first-time acceptance rate of a socket-and-spigot reinforced concrete pipe joint, comprising the following steps: S1. Qualitative pipeline interface characteristics and acceptance requirements: Comprehensively determine the type, position and diameter of the socket-and-spigot joint, clarify the specific acceptance standards and requirements of the socket-and-spigot reinforced concrete pipe joint, and establish the SSJPC database; S2. Locate the end cause based on the characteristics of the pipe interface: Based on the qualitative results of the pipe interface, analyze the common unqualified phenomena of the socket-type reinforced concrete pipe interface, and confirm the end causes of various unqualified phenomena based on the phenomena and risk analysis; S3. Distinguish between primary and secondary reasons: In the terminal reason package, analyze and select the primary and secondary reasons one by one, identify the primary reasons, and finally confirm that the two main reasons for the unqualified water seepage phenomenon of the pipe interface are: the flatness of the rubber water stop ring installation is greater than 10mm and / or the socket depth is less than the minimum requirement of 60mm; S4. Determine countermeasures based on causes: Combined with the cause-countermeasure mapping library and interface application characteristics, analyze from five aspects: effectiveness, technical feasibility, economic rationality, timeliness and impact on other processes, and determine countermeasures based on each cause: (1) Require manufacturers to make a standard line with a depth of 60 mm at the pipe spigot end; (2) Assign a dedicated person to be responsible for construction supervision to ensure that the socket depth is not less than 60 mm, and replace unqualified rubber water stop rings in a timely manner, and keep photos of the rubber water stop ring installation and leveling construction records; S5 Construction Implementation Plan: (1) Remove the debris in the socket and the adhesive on the rubber ring, wipe it clean, and then evenly apply non-oil lubricant; (2) Put a sealing rubber ring on the socket to ensure that the sealing rubber ring is smooth and without distortion; when installing the pipe, ensure that the sealing rubber ring rolls evenly into place, and after releasing the external force, the rebound is no more than 10mm. Turn the sealing rubber ring into the socket groove and press it along the entire rubber ring by hand at least once to ensure that the rubber ring is evenly and consistently stuck in the socket groove; (3) Use a crane and a special high-strength nylon belt top-mounted interface to pull the socket with the sealing rubber ring into the socket after the collision, and ensure that the socket depth is not less than 60mm.
[0005] Preferably, S2 includes the following two aspects: First, the problems existing in the completed socket-type reinforced concrete pipe joints are classified and summarized, which are mainly divided into four types of problems: interface defects between pipes, water seepage at the connection between inspection wells and pipes, water seepage in inspection well bodies, and pipe ruptures; and then the pipeline interface defects are summarized into four types of problems: pipeline interface seepage, pipeline interface rupture, and pipeline interface misalignment through a hierarchical method; second, the requirements for the qualified rate of socket-type reinforced concrete pipe joints in various places and units are collected.
[0006] Preferably, in S4, on the basis of data analysis and statistics on the problem site and qualified rate requirements of the socket-type reinforced concrete interface, correlation analysis is also carried out from six aspects: man, machine, material, method, environment, and measurement, and the terminal cause library is improved, which is divided into 9 major reasons: the flatness of the rubber water stop ring installation is greater than 10mm, the socket depth is lower than the minimum requirement of 60mm, construction on rainy days, and the groove bottom elevation error is greater than 2cm; and the main cause is determined according to the actual analysis of individual cases, and the logic of one cause and one policy is used to establish a cause-countermeasure mapping library, and the countermeasures are compared from five dimensions: effectiveness, technical feasibility, economic rationality, timeliness, and impact on other processes, and the best solution is comprehensively selected.
[0007] Preferably, it also includes applying the SSJPC system to improve the pass rate of socket-type reinforced concrete pipe interfaces in actual projects. The main process is: qualitative interface characteristics and acceptance requirements → lock in the cause library according to interface characteristics → distinguish between major and minor causes → select countermeasures based on the causes → implement countermeasures → check the target effect.
[0008] Preferably, SSJPC maintenance is also included, including the following two aspects: First, on the basis of improving the qualified rate of socket-and-spigot reinforced concrete pipe interfaces, new data will be collected to regularly update and enrich the database; The second is to expand the database of the system from the project database to the regional database.
[0009] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method for improving the one-time acceptance rate of socket-and-spigot reinforced concrete pipe joints, which is beneficial to improving the one-time acceptance rate of socket-and-spigot reinforced concrete pipe joints and is an inherent need for the creation of quality benchmark projects and the creation of high-quality projects.
[0010] 2. The present invention can reduce the labor, machinery and material secondary repair costs caused by rework by improving the qualified rate of socket-type reinforced concrete pipe interfaces of drainage pipes.
[0011] 3. The process of the present invention is clear, the implementation is convenient, and the acceptance efficiency of the socket-type reinforced concrete pipe interface is improved; at the same time, the method is applicable to a variety of interfaces such as the socket-type reinforced concrete pipe interface, the prestressed (self-stressed) concrete pipe interface, the prestressed steel tube concrete pipe interface, etc., and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a flow chart of an embodiment of the present invention. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0014] like Figure 1 As shown, as a preferred embodiment of the present invention, this embodiment provides a method for improving the first-time acceptance rate of socket-type reinforced concrete pipe joints, comprising the following steps: S1. Qualitative pipeline interface characteristics and acceptance requirements: Comprehensively determine the type, position and diameter of the socket-and-spigot joint, clarify the specific acceptance standards and requirements of the socket-and-spigot reinforced concrete pipe joint, and establish the SSJPC database; S2. Locate the end cause based on the characteristics of the pipe interface: Based on the qualitative results of the pipe interface, analyze the common unqualified phenomena of the socket-type reinforced concrete pipe interface, and confirm the end causes of various unqualified phenomena based on the phenomena and risk analysis; S3. Distinguish between primary and secondary reasons: In the terminal reason package, analyze and select the primary and secondary reasons one by one, identify the primary reasons, and finally confirm that the two main reasons for the unqualified water seepage phenomenon of the pipe interface are: the flatness of the rubber water stop ring installation is greater than 10mm and / or the socket depth is less than the minimum requirement of 60mm; S4. Determine countermeasures based on causes: Combined with the cause-countermeasure mapping library and interface application characteristics, analyze from five aspects: effectiveness, technical feasibility, economic rationality, timeliness and impact on other processes, and determine countermeasures based on each cause: (1) Require manufacturers to make a standard line with a depth of 60 mm at the pipe spigot end; (2) Assign a dedicated person to be responsible for construction supervision to ensure that the socket depth is not less than 60 mm, and replace unqualified rubber water stop rings in a timely manner, and keep photos of the rubber water stop ring installation and leveling construction records; S5 Construction Implementation Plan: (1) Remove the debris in the socket and the adhesive on the rubber ring, wipe it clean, and then evenly apply non-oil lubricant; (2) Put a sealing rubber ring on the socket to ensure that the sealing rubber ring is smooth and without distortion; when installing the pipe, ensure that the sealing rubber ring rolls evenly into place, and after releasing the external force, the rebound is no more than 10mm. Turn the sealing rubber ring into the socket groove and press it along the entire rubber ring by hand at least once to ensure that the rubber ring is evenly and consistently stuck in the socket groove; (3) Use a crane and a special high-strength nylon belt top-mounted interface to pull the socket with the sealing rubber ring into the socket after the collision, and ensure that the socket depth is not less than 60mm.
[0015] In some preferred embodiments, S2 includes the following two aspects: First, the problems existing in the completed socket-type reinforced concrete pipe joints are classified and summarized, which are mainly divided into four types of problems: defects in the interfaces between pipes, water seepage at the connection between the inspection well and the pipe, water seepage in the inspection well body, and pipe rupture. Then, the pipe interface defects are summarized into four types of problems: pipe interface seepage, pipe interface rupture, and pipe interface misalignment through a hierarchical method; second, the requirements for the qualified rate of socket-type reinforced concrete pipe joints in various places and units are collected.
[0016] In some preferred embodiments, S4, on the basis of data analysis and statistics of the problem sites and qualified rate requirements of the socket-type reinforced concrete interface, also conducts correlation analysis from six aspects: people, machines, materials, methods, environment, and measurement, and improves the terminal cause library, which is divided into 9 major reasons: the installation flatness of the rubber water stop ring is greater than 10mm, the socket depth is lower than the minimum requirement of 60mm, construction on rainy days, and the groove bottom elevation error is greater than 2cm; and determines the main cause based on the actual analysis of individual cases, and governs it according to the logic of one cause and one policy, establishes a cause-countermeasure mapping library, and compares the countermeasures from five dimensions: effectiveness, technical feasibility, economic rationality, timeliness, and impact on other processes, and comprehensively selects the best solution.
[0017] In some preferred embodiments, the SSJPC system is also applied to improve the qualification rate of socket-type reinforced concrete pipe interfaces in actual projects. The main process is: qualitative interface characteristics and acceptance requirements → lock in the cause library according to interface characteristics → distinguish between major and minor causes → select countermeasures based on the causes → implement countermeasures → check the target effect.
[0018] In other preferred embodiments, in order to adapt to the development of engineering construction technology and improve the guidance reliability of the database and system, this embodiment also includes SSJPC maintenance, including the following two aspects: First, on the basis of improving the qualified rate of socket-and-spigot reinforced concrete pipe interfaces, new data will be collected to regularly update and enrich the database; The second is to expand the database of the system from the project database to the regional database.
[0019] It should be noted that in the description of the above embodiment, man, machine, material, method, environment and measurement are professional terms in engineering construction, representing personnel, machinery, material, method, environment and measurement respectively; SSJPC (Socket And Spigot Joint Pass Control) refers to the socket and spigot joint pass rate control.
[0020] The above-mentioned embodiment provides a method for improving the one-time acceptance rate of socket-type reinforced concrete pipe joints, which is conducive to improving the one-time acceptance rate of socket-type reinforced concrete pipe joints and is an inherent need for the creation of quality benchmark projects and the creation of high-quality projects. The present invention starts from the defects in the construction of socket-type reinforced concrete pipes, reversely deduces the causes of different defects, and further analyzes the causes to determine the main causes. According to different possible causes, avoidance plans are specified, and the construction plan is optimized at the same time, which can significantly improve the one-time acceptance rate of socket-type reinforced concrete pipe joints.
[0021] The above-mentioned embodiments can reduce the labor, machinery and material secondary repair costs caused by rework by improving the qualified rate of the socket-type reinforced concrete pipe joints of the drainage pipe; in addition, it can be understood that the method provided by the above-mentioned embodiments has a clear process and is easy to implement, which improves the acceptance efficiency of the socket-type reinforced concrete pipe joints; at the same time, this method is applicable to a variety of joints such as socket-type reinforced concrete pipe joints, prestressed (self-)stressed concrete pipe joints, prestressed steel cylinder concrete pipe joints, etc., and has a wide range of applications.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.
Claims
1. A method for improving the first-time acceptance rate of socket-and-spigot reinforced concrete pipe joints, characterized in that: The steps include: S1. Qualitative pipeline interface characteristics and acceptance requirements: Comprehensively determine the type, position and diameter of the socket-and-spigot joint, clarify the specific acceptance standards and requirements of the socket-and-spigot reinforced concrete pipe joint, and establish the SSJPC database; S2. Locate the end cause based on the characteristics of the pipe interface: Based on the qualitative results of the pipe interface, analyze the common unqualified phenomena of the socket-type reinforced concrete pipe interface, and confirm the end causes of various unqualified phenomena based on the phenomena and risk analysis; S3. Distinguish between primary and secondary reasons: In the terminal reason package, analyze and select the primary and secondary reasons one by one, identify the primary reasons, and finally confirm that the two main reasons for the unqualified water seepage phenomenon of the pipe interface are: the flatness of the rubber water stop ring installation is greater than 10mm and / or the socket depth is less than the minimum requirement of 60mm; S4. Determine countermeasures based on causes: Combined with the cause-countermeasure mapping library and interface application characteristics, analyze from five aspects: effectiveness, technical feasibility, economic rationality, timeliness and impact on other processes, and determine countermeasures based on each cause: (1) Require manufacturers to make a standard line with a depth of 60 mm at the pipe spigot end; (2) Assign a dedicated person to be responsible for construction supervision to ensure that the socket depth is not less than 60 mm, and replace unqualified rubber water stop rings in a timely manner, and keep photos of the rubber water stop ring installation and leveling construction records; S5 Construction Implementation Plan: (1) Remove the debris in the socket and the adhesive on the rubber ring, wipe it clean, and then evenly apply non-oil lubricant; (2) Put a sealing rubber ring on the socket to ensure that the sealing rubber ring is smooth and without distortion; when installing the pipe, ensure that the sealing rubber ring rolls evenly into place, and after releasing the external force, the rebound is no more than 10mm. Turn the sealing rubber ring into the socket groove and press it along the entire rubber ring by hand at least once to ensure that the rubber ring is evenly and consistently stuck in the socket groove; (3) Use a crane and a special high-strength nylon belt top-mounted interface to pull the socket with the sealing rubber ring into the socket after the collision, and ensure that the socket depth is not less than 60mm.
2. The method for improving the first-time acceptance rate of socket-and-spigot reinforced concrete pipe joints according to claim 1 is characterized in that: S2 includes the following two aspects: First, the problems existing in the completed socket-type reinforced concrete pipe interfaces are classified and summarized, which are mainly divided into four types of problems: interface defects between pipelines, water seepage at the connection between inspection wells and pipelines, water seepage in inspection well bodies, and pipe ruptures. Then, the pipeline interface defects are summarized into four types of problems: pipeline interface seepage, pipeline interface rupture, and pipeline interface misalignment through the stratification method. Second, the requirements for the qualified rate of socket-type reinforced concrete pipe interfaces in various places and units are collected.
3. The method for improving the first-time acceptance rate of socket-and-spigot reinforced concrete pipe joints according to claim 1 is characterized in that: In S4, based on the data analysis and statistics of the on-site problems and qualified rate requirements of socket-type reinforced concrete interfaces, correlation analysis is also carried out from six aspects: people, machines, materials, methods, environment, and measurement, and the terminal cause library is improved, which is divided into 9 major reasons: the flatness of the rubber water stop ring installation is greater than 10mm, the socket depth is lower than the minimum requirement of 60mm, construction on rainy days, and the groove bottom elevation error is greater than 2cm; and the main reasons are determined according to the actual analysis of individual cases, and the logic of one cause and one policy is used to establish a cause-countermeasure mapping library. The countermeasures are compared from five dimensions: effectiveness, technical feasibility, economic rationality, timeliness, and impact on other processes, and the best solution is comprehensively selected.
4. The method for improving the first-time acceptance rate of socket-and-spigot reinforced concrete pipe joints according to claim 1 is characterized in that: It also includes applying the SSJPC system to improve the pass rate of socket-type reinforced concrete pipe interfaces in actual projects. The main process is: qualitative interface characteristics and acceptance requirements → lock in the cause library according to interface characteristics → distinguish between major and minor causes → select countermeasures based on the causes → implement countermeasures → check the target effect.
5. A method for improving the first-time acceptance rate of socket-and-spigot reinforced concrete pipe joints, characterized in that: It also includes SSJPC maintenance, including the following two aspects: First, on the basis of improving the qualified rate of socket-and-spigot reinforced concrete pipe interfaces, new data will be collected to regularly update and enrich the database; The second is to expand the database of the system from the project database to the regional database.