Comprehensive detection and evaluation method and system for lap joint construction quality of new and old roadbeds

Abstract

The invention discloses a comprehensive detection and evaluation method and system for the lap joint construction quality of new and old roadbeds, and the method comprises the steps: carrying out the fitting processing of j differential settlement values of a certain monitored section before a certain moment T and the time t, drawing a differential settlement-time relation curve, and obtaining the change rate of the differential settlement values at the moment T; obtaining differential settlement values and differential settlement value change rates of n monitoring sections at the T moment along the line, respectively drawing a distribution linear association diagram of the differential settlement values along with the course change of the length L of the detection route, and calculating to obtain an average value and a variance of the differential settlement values; calculating to obtain an average value and a variance of the differential settlement value change rate according to a distribution linear correlation graph of the differential settlement value change rate along with the course change of the detection route length L; constructing a construction quality comprehensive detection evaluation index, setting a new and old roadbed lap joint construction quality comprehensive detection evaluation index standard value, and performing evaluation according to the new and old roadbed lap joint construction quality comprehensive detection evaluation grade division table.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed engineering detection, and in particular to a comprehensive detection and evaluation method and system for the construction quality of the overlap of a new and old roadbed. Background Art

[0002] In recent years, with the rapid economic development and increasing transportation demand in my country, the scale and number of highway reconstruction and expansion projects have continued to expand, becoming a key means to optimize the transportation network, improve transportation efficiency and meet the growing traffic flow. However, many highways built earlier have approached or exceeded their design service life, and due to insufficient early planning, they can no longer meet the huge demand of modern transportation. They are in urgent need of reconstruction and expansion to improve transportation carrying capacity. In this context, the effective connection of new and old roadbeds has become a core technical problem in highway reconstruction and expansion.

[0003] During the reconstruction and expansion process, the construction quality control of the joint between the new and old roadbeds is particularly important. Traditional detection methods mainly focus on basic indicators such as compaction and flatness, but cannot comprehensively and accurately evaluate the stability and long-term performance of the joint between the new and old roadbeds, and ignore possible problems such as uneven settlement. This leads to frequent road diseases after the highway is put into use, increases maintenance costs, and poses traffic safety hazards. Existing detection technologies usually rely on static physical tests, lack in-depth analysis of the dynamic characteristics and long-term changes of the roadbed joints, and are difficult to effectively predict potential risks. Therefore, it is urgent to develop a detection method that comprehensively evaluates the joint quality of the new and old roadbeds, which can scientifically and comprehensively consider the physical characteristics of the roadbed, construction quality, and dynamic changes in long-term operation.

[0004] At the same time, the industry has not yet established a complete evaluation system in the field of highway reconstruction and expansion, and cannot fully consider the integrity, stability and long-term performance of the overlap between the new and old roadbeds. In view of this, it is necessary to propose a comprehensive inspection and evaluation method for the construction quality of the overlap between the new and old roadbeds to solve the current problems. This is of great significance to improving the quality of highway reconstruction and expansion projects, and will promote the sustainable development of my country's transportation industry. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a comprehensive detection and evaluation method and system for the overlap construction quality of new and old roadbeds, which can effectively reduce the subsequent maintenance costs and traffic safety hazards caused by quality problems, timely discover and take measures, extend the service life of the highway, reduce maintenance needs, and improve the long-term stability and economy of the highway.

[0006] The present invention provides a comprehensive detection and evaluation method for the construction quality of the overlap between a new and an old roadbed, the method comprising:

[0007] n monitoring sections are set up along the length of the line, and a pair of settlement monitoring points are arranged in each monitoring section to detect the settlement value of the newly built roadbed and the settlement value of the existing roadbed respectively;

[0008] Monitor the vertical deformation of the roadbed at each monitoring section settlement monitoring point within a certain time range, and obtain the settlement value of the new roadbed and the settlement value of the existing roadbed and the differential settlement value of each monitoring section within a certain time range;

[0009] Draw a settlement-time history scatter point distribution linear correlation diagram for the settlement values ​​of j newly built roadbeds and the settlement values ​​of j existing roadbeds at a certain monitoring section before a certain time T and time t;

[0010] Fit the j differential settlement values ​​of a monitoring section before a certain time T with the time t, draw the differential settlement-time relationship curve, and obtain the change rate of the differential settlement value at time T;

[0011] The differential settlement values ​​and the rate of change of differential settlement values ​​at time T of n monitoring sections along the line are obtained, and the distribution linear correlation diagram of the differential settlement value changing with the detection route length L and the distribution linear correlation diagram of the rate of change of differential settlement value changing with the detection route length L are drawn respectively;

[0012] The mean value and variance of the differential settlement value are calculated based on the distribution linear correlation diagram of the differential settlement value with the change of the detection route length L, and the mean value and variance of the differential settlement value change rate are calculated based on the distribution linear correlation diagram of the differential settlement value change rate with the change of the detection route length L;

[0013] Constructing the evaluation index of differential settlement value and the evaluation index of differential settlement value change rate;

[0014] Construct comprehensive inspection and evaluation indicators for construction quality, set standard values ​​for comprehensive inspection and evaluation indicators for the overlap quality of new and old roadbeds, construct comprehensive inspection and evaluation levels for the overlap quality of new and old roadbeds, and conduct evaluation based on the comprehensive inspection and evaluation level classification table for the overlap quality of new and old roadbeds.

[0015] Preferably, the average value and variance of the differential sedimentation value are calculated based on the distribution linear correlation diagram of the differential sedimentation value as the detection route length L changes, and the average value and variance of the differential sedimentation value change rate are calculated based on the distribution linear correlation diagram of the differential sedimentation value change rate as the detection route length L changes, including:

[0016]

[0017] Where, ΔV i is the differential settlement value of n monitoring sections along the line at time T, is the average value of differential sedimentation value ΔV, is the variance of the differential sedimentation value ΔV, K ΔV-i is the change rate of differential settlement values ​​at time T of n monitoring sections along the line, K is the rate of change of differential sedimentation value ΔV The average value of K is the rate of change of differential sedimentation value ΔV The variance of .

[0018] Preferably, the evaluation index of differential sedimentation value and the evaluation index of differential sedimentation value change rate are constructed as follows:

[0019]

[0020] in, is the evaluation index of differential sedimentation value ΔV, K is the rate of change of differential sedimentation value ΔV evaluation indicators.

[0021] Preferably, the comprehensive inspection and evaluation indicators for construction quality include:

[0022]

[0023] Among them, η is the influence coefficient, η 1 +η 2 =1.

[0024] The present invention also provides a comprehensive detection and evaluation system for the construction quality of the overlap between the new and old roadbeds, the system is used to implement any one of the methods described, the system comprises: a first detection module, a second detection module, a third detection module, a fitting module, a drawing module, a calculation module, a construction module and an evaluation module;

[0025] The first detection module is used to set n monitoring sections along the length direction of the line, and arrange a pair of settlement monitoring points in each monitoring section to detect the settlement value of the newly built roadbed and the settlement value of the existing roadbed respectively;

[0026] The second detection module is used to monitor the vertical deformation of the roadbed at the settlement monitoring points of each monitoring section within a certain time range, and obtain the settlement value of the newly built roadbed and the settlement value and differential settlement value of the existing roadbed of each monitoring section within a certain time range;

[0027] The third detection module is used to draw a settlement-time history scatter point distribution linear correlation diagram for the settlement values ​​of j newly built roadbeds and the settlement values ​​of j existing roadbeds in a certain monitoring section before a certain time T and time t;

[0028] The fitting module is used to fit j differential settlement values ​​of a certain monitoring section before a certain time T and time t, draw a differential settlement-time relationship curve, and obtain the change rate of the differential settlement value at time T;

[0029] The drawing module is used to obtain the differential settlement values ​​and the differential settlement value change rates at time T of n monitoring sections along the line, and respectively draw a distribution linear correlation diagram of the differential settlement value changing with the detection route length L, and a distribution linear correlation diagram of the differential settlement value change rate changing with the detection route length L;

[0030] The calculation module is used to calculate the average value and variance of the differential sedimentation value according to the distribution linear correlation diagram of the differential sedimentation value changing with the detection route length L, and calculate the average value and variance of the differential sedimentation value change rate according to the distribution linear correlation diagram of the differential sedimentation value change rate changing with the detection route length L;

[0031] The construction module is used to construct an evaluation index of a differential sedimentation value and an evaluation index of a differential sedimentation value change rate;

[0032] The evaluation module is used to construct comprehensive inspection and evaluation indicators for construction quality, set standard values ​​for comprehensive inspection and evaluation indicators for the overlap of new and old roadbeds, construct comprehensive inspection and evaluation levels for the overlap of new and old roadbeds, and conduct evaluation based on a comprehensive inspection and evaluation level classification table for the overlap of new and old roadbeds.

[0033] Preferably, the average value and variance of the differential sedimentation value are calculated based on the distribution linear correlation diagram of the differential sedimentation value as the detection route length L changes, and the average value and variance of the differential sedimentation value change rate are calculated based on the distribution linear correlation diagram of the differential sedimentation value change rate as the detection route length L changes, including:

[0034]

[0035] Where, ΔV i is the differential settlement value of n monitoring sections along the line at time T, is the average value of differential sedimentation value ΔV, is the variance of the differential sedimentation value ΔV, K ΔV-i is the change rate of differential settlement values ​​at time T of n monitoring sections along the line, K is the rate of change of differential sedimentation value ΔV The average value of K is the rate of change of differential sedimentation value ΔV The variance of .

[0036] Preferably, the evaluation index of differential sedimentation value and the evaluation index of differential sedimentation value change rate are constructed as follows:

[0037]

[0038] in, is the evaluation index of differential sedimentation value ΔV, K is the rate of change of differential sedimentation value ΔV evaluation indicators.

[0039] Preferably, the comprehensive inspection and evaluation indicators for construction quality include:

[0040]

[0041] Among them, η is the influence coefficient, η 1 +η 2 =1.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] (1) The present invention provides a comprehensive inspection and evaluation method for the construction quality of the new and old roadbed overlap, which goes beyond the limitation of traditional methods that only focus on basic indicators such as roadbed compaction and flatness, and can comprehensively evaluate the integrity, stability and long-term performance of the new and old roadbed joints. By setting monitoring sections and settlement monitoring points, the settlement values ​​and differential settlement values ​​of the new and existing roadbeds are obtained, and a variety of relationship curves are drawn to obtain the rate of change of differential settlement values, and study their change characteristics. Through dynamic monitoring, potential problems such as uneven settlement can be discovered in a timely manner, providing data support for early intervention, ensuring the quality of highway reconstruction and expansion projects, and ensuring the long-term safe operation of highways.

[0044] (2) The present invention calculates the average and variance of differential settlement values ​​and change rates through a large amount of monitoring data, constructs a scientific evaluation index system, and sets standard values ​​and grade divisions in combination with actual site conditions and long-term quality requirements. This method makes the evaluation of the construction quality of the overlap between the new and old roadbeds more objective and accurate, avoids the errors that may be caused by subjective judgment, and thus improves the reliability and accuracy of quality evaluation.

[0045] (3) The present invention can effectively reduce the subsequent maintenance costs and traffic safety hazards caused by quality problems. Timely discovery and taking measures can extend the service life of the highway, reduce maintenance needs, and improve the long-term stability and economy of the highway. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0047] Figure 1It is a cross-sectional diagram of the monitoring section of the present invention;

[0048] Figure 2 It is a layout diagram of the monitoring section along the length direction of the line of the present invention;

[0049] Figure 3 is the settlement value V of j newly built roadbeds in a certain monitoring section of the second embodiment of the present invention IS-j and the settlement value V of j existing roadbeds NR-j Linear correlation diagram of the settlement-time history scatter distribution drawn with time t;

[0050] Figure 4 is the j differential settlement values ​​ΔV of a certain monitoring section in the second embodiment of the present invention j The fitting trend analysis diagram with time t is the differential sedimentation-time relationship curve;

[0051] Figure 5 is the differential settlement value ΔV of the n monitoring sections at time T in the second embodiment of the present invention i The distribution linear correlation diagram changes with the length of the detection route L;

[0052] Figure 6 is the differential settlement value change rate K of the n monitoring sections at time T in the second embodiment of the present invention ΔV-i The distribution linear correlation diagram changes with the length of the detection route L;

[0053] Figure 7 The present invention is a flow chart of a comprehensive detection and evaluation method for the construction quality of the overlap between new and old roadbeds.

[0054] In the attached figure: 1 is the settlement monitoring point of the existing roadbed, 2 is the settlement monitoring point of the newly built roadbed, 3 is the settlement monitoring point of the existing roadbed, and 4 is the settlement monitoring point of the newly built roadbed. DETAILED DESCRIPTION

[0055] 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.

[0056] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0057] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] Embodiment 1

[0059] In view of the shortcomings of the existing detection and evaluation methods, the present invention provides a comprehensive detection and evaluation method for the construction quality of the overlap between the new and old roadbeds, comprising the following specific steps:

[0060] (1) Set n monitoring sections along the length of the line, and set a pair of settlement monitoring points in each monitoring section to detect the settlement value V of the new roadbed. IS and the settlement value V of the existing roadbed NR ;

[0061] (2) Monitor the vertical deformation of the roadbed at each monitoring section settlement monitoring point within a certain time range, and obtain the settlement value V of the new roadbed at each monitoring section within a certain time range. IS-n and the settlement value V of the existing roadbed NR-n and the differential sedimentation value ΔV, where ΔV = V IS-n -V NR-n ;

[0062] (3) The settlement value V of j newly built roadbeds at a certain monitoring section before a certain time T IS-j and the settlement value V of j existing roadbeds NR-j Draw a linear correlation diagram of the sedimentation-time history scatter distribution with time t;

[0063] (4) For the j differential settlement values ​​ΔV of a certain monitoring section before a certain time T j Fitting is performed with time t to draw the differential sedimentation-time relationship curve, and the change rate K of the differential sedimentation value ΔV at time T is obtained.ΔV , the fitting formula is ΔV j =a-bc t , a, b, c are the fitting parameters of the fitting formula, which are determined by the specific fitting process, and the change rate K ΔV To plot the slope of the differential sedimentation-time curve, K ΔV =-b×c t ×lnc, t is time;

[0064] (5) The differential settlement value ΔV of n monitoring sections along the line at time T is obtained by the above method. i And the rate of change of differential sedimentation value K ΔV-i , and plot the differential sedimentation value ΔV i Distribution linear correlation diagram and differential sedimentation value change rate K as the detection route length L changes ΔV-i The distribution linear correlation diagram changes with the length of the detection route L;

[0065] (6) Based on the differential sedimentation value ΔV i The average value E of the differential sedimentation value ΔV is calculated by the linear correlation diagram of the distribution with the change of the detection route length L ΔVi With variance D ΔVi , according to the differential sedimentation value change rate K ΔV-i The distribution linear correlation diagram of the change in the length of the detection route L is used to calculate the change rate K of the differential sedimentation value ΔV The average With variance in:

[0066]

[0067] (7) Constructing the evaluation index of differential sedimentation value ΔV The rate of change of differential sedimentation value K ΔV Evaluation indicators in

[0068] (8) Construct the comprehensive inspection and evaluation index Q of construction quality, where η is the influence coefficient, η 1 +η 2 =1, based on the actual situation of the on-site project and taking into full consideration the quality requirements of the roadbed in the long-term operation process, the standard value of the comprehensive inspection and evaluation index of the construction quality of the new and old roadbed overlap is set [Q], m is the number of months or years put into use, that is, when time t is recorded in days, m is the number of months put into use, or when time t is recorded in months, m is the number of years put into use. The comprehensive inspection and evaluation level of the overlap construction quality of the new and old roadbed is constructed, among which the comprehensive inspection and evaluation level classification table of the overlap construction quality of the new and old roadbed is as Table 1:

[0069] Table 1

[0070] Comprehensive inspection and evaluation level of construction quality Comprehensive inspection and evaluation indicators for construction quality excellent Q≤1.2[Q] good 1.2[Q]<Q≤1.8[Q] qualified 1.8[Q]<Q≤2.5[Q] Failure Q>2.5[Q]

[0071] Embodiment 2

[0072] like Figure 1 — Figure 7 As shown in the figure, a comprehensive inspection and evaluation of the construction quality of the new and old roadbed overlap of a highway reconstruction and expansion project is carried out, including the following specific steps:

[0073] (1) Ten monitoring sections are set up along the length of a certain road section. A pair of settlement monitoring points are arranged in each monitoring section to detect the settlement value V of the newly built roadbed. IS and the settlement value V of the existing roadbed NR ;

[0074] (2) Within 2 months after normal traffic, the vertical deformation of the roadbed at each monitoring section settlement monitoring point is monitored to obtain the settlement value V of the new roadbed of each monitoring section within a certain time range. IS-n and the settlement value V of the existing roadbed NR-n And the differential sedimentation value ΔV; as shown in Table 2:

[0075] Table 2

[0076] <![CDATA[V IS-n / mm]]> 3.45 5.76 7.23 9.47 10.46 13.03 14.76 17.32 18.55 19.86 20.57 21.35 <![CDATA[V NR-n / mm]]> 1.46 2.23 3.19 4.84 5.54 6.11 6.97 8.79 10.01 11.28 11.98 12.54 ΔV / mm 1.99 3.53 4.04 4.63 4.92 6.92 7.79 8.53 8.54 8.58 8.59 8.81 t / d 5 10 15 20 25 30 35 40 45 50 55 60

[0077] (3) The settlement values ​​V of 12 newly built roadbeds at a monitoring section 60 days ago IS-j and the settlement values ​​V of 12 existing roadbeds NR-j Draw a linear correlation diagram of the sedimentation-time history scatter distribution with time t;

[0078] (4) 12 differential settlement values ​​ΔV of a monitoring section 60 days ago j The differential sedimentation-time relationship curve was plotted by fitting with time t, and the change rate K of the differential sedimentation value ΔV at 45 days was obtained. ΔV ;

[0079] (5) The differential settlement values ​​ΔV at 45 days of the 10 monitoring sections along the line were obtained by the above method. i And the rate of change of differential sedimentation value K ΔV-i , and plot the differential sedimentation value ΔV i Distribution linear correlation diagram and differential sedimentation value change rate K as the detection route length L changes ΔV-i The distribution linear correlation diagram with the change of detection route length L is shown in Table 3:

[0080] Table 3

[0081]

[0082] (6) Based on the differential sedimentation value ΔV i The average value of the differential sedimentation value ΔV is calculated by the linear correlation diagram of the distribution with the change of the detection route length L With variance According to the differential sedimentation value change rate K ΔV-i The distribution linear correlation diagram of the change in the length of the detection route L is used to calculate the change rate K of the differential sedimentation value ΔV The average With variance in:

[0083]

[0084] (7) Constructing the evaluation index of differential sedimentation value ΔV The rate of change of differential sedimentation value K ΔV Evaluation indicators in

[0085] (8) Construct the comprehensive inspection and evaluation index Q of construction quality, where:

[0086] η is the influence coefficient, η 1 +η 2 =1. Based on the actual conditions of the on-site project and taking into full consideration the quality requirements of the roadbed in the long-term operation process, the standard value of the comprehensive inspection and evaluation index of the overlap quality of the new and old roadbed is set to [Q] = 1.2. According to the comprehensive inspection and evaluation level of the overlap quality of the new and old roadbed, the overlap quality of the new and old roadbed of this section is comprehensively inspected and evaluated. If 1.2[Q]<Q≤1.8[Q], the overlap quality of the new and old roadbed of this section is good.

[0087] Embodiment 3

[0088] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present invention also provides a comprehensive detection and evaluation system for the construction quality of the overlap between the new and old roadbeds, the system is used to implement any of the methods described, the system comprising: a first detection module, a second detection module, a third detection module, a fitting module, a drawing module, a calculation module, a construction module and an evaluation module;

[0089] The first detection module is used to set n monitoring sections along the length direction of the line, and arrange a pair of settlement monitoring points in each monitoring section to detect the settlement value of the newly built roadbed and the settlement value of the existing roadbed respectively;

[0090] The second detection module is used to monitor the vertical deformation of the roadbed at the settlement monitoring points of each monitoring section within a certain time range, and obtain the settlement value of the newly built roadbed and the settlement value of the existing roadbed and the differential settlement value of each monitoring section within a certain time range;

[0091] The third detection module is used to draw a settlement-time history scatter point distribution linear correlation diagram for the settlement values ​​of j newly built roadbeds and the settlement values ​​of j existing roadbeds in a certain monitoring section before a certain time T and time t;

[0092] The fitting module is used to fit j differential settlement values ​​of a certain monitoring section before a certain time T and time t, draw a differential settlement-time relationship curve, and obtain the change rate of the differential settlement value at time T;

[0093] The drawing module is used to obtain the differential settlement values ​​and the rate of change of the differential settlement values ​​at time T of n monitoring sections along the line, and to draw the distribution linear correlation diagram of the differential settlement value changing with the detection route length L, and the distribution linear correlation diagram of the rate of change of the differential settlement value changing with the detection route length L;

[0094] The calculation module is used to calculate the average value and variance of the differential sedimentation value according to the distribution curve of the differential sedimentation value changing with the detection route length, and calculate the average value and variance of the differential sedimentation value change rate according to the distribution linear correlation diagram of the differential sedimentation value change rate changing with the detection route length L course;

[0095] The construction module is used to construct an evaluation index of a differential sedimentation value and an evaluation index of a differential sedimentation value change rate;

[0096] The evaluation module is used to construct comprehensive inspection and evaluation indicators for construction quality, set standard values ​​for comprehensive inspection and evaluation indicators for the overlap quality of new and old roadbeds, construct comprehensive inspection and evaluation levels for the overlap quality of new and old roadbeds, and conduct evaluation based on the comprehensive inspection and evaluation level classification table for the overlap quality of new and old roadbeds.

[0097] In this embodiment, the average value and variance of the differential sedimentation value are calculated based on the distribution linear correlation diagram of the differential sedimentation value with the change of the detection route length L, and the average value and variance of the differential sedimentation value change rate are calculated based on the distribution linear correlation diagram of the differential sedimentation value change rate with the change of the detection route length L, including:

[0098]

[0099] Where, ΔV i is the differential settlement value of n monitoring sections along the line at time T, is the average value of differential sedimentation value ΔV, is the variance of the differential sedimentation value ΔV, K ΔV-iis the change rate of differential settlement values ​​at time T of n monitoring sections along the line, K is the rate of change of differential sedimentation value ΔV The average value of K is the rate of change of differential sedimentation value ΔV The variance of .

[0100] In this embodiment, the evaluation index of differential sedimentation value and the evaluation index of differential sedimentation value change rate are constructed including:

[0101]

[0102] in, is the evaluation index of differential sedimentation value ΔV, K is the rate of change of differential sedimentation value ΔV evaluation indicators.

[0103] In this embodiment, the comprehensive inspection and evaluation indexes for construction quality include:

[0104]

[0105] Among them, η is the influence coefficient, η 1 +η 2 =1.

[0106] The system of the above embodiment is used to implement a corresponding comprehensive detection and evaluation method for the construction quality of the overlap between the new and old roadbeds in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0107] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the present invention.

Claims

1. A comprehensive detection and evaluation method for the construction quality of the overlap between new and old roadbeds, characterized in that: The method comprises: n monitoring sections are set up along the length of the line, and a pair of settlement monitoring points are arranged in each monitoring section to detect the settlement value of the newly built roadbed and the settlement value of the existing roadbed respectively; Monitor the vertical deformation of the roadbed at each monitoring section settlement monitoring point within a certain time range, and obtain the settlement value of the new roadbed and the settlement value of the existing roadbed and the differential settlement value of each monitoring section within a certain time range; Draw a settlement-time history scatter point distribution linear correlation diagram for the settlement values ​​of j newly built roadbeds and the settlement values ​​of j existing roadbeds at a certain monitoring section before a certain time T and time t; Fit the j differential settlement values ​​of a monitoring section before a certain time T with the time t, draw the differential settlement-time relationship curve, and obtain the change rate of the differential settlement value at time T; The differential settlement values ​​and the rate of change of differential settlement values ​​at time T of n monitoring sections along the line are obtained, and the distribution linear correlation diagram of the differential settlement value changing with the detection route length L and the distribution linear correlation diagram of the rate of change of differential settlement value changing with the detection route length L are drawn respectively; The mean value and variance of the differential settlement value are calculated based on the distribution linear correlation diagram of the differential settlement value with the change of the detection route length L, and the mean value and variance of the differential settlement value change rate are calculated based on the distribution linear correlation diagram of the differential settlement value change rate with the change of the detection route length L; Constructing the evaluation index of differential settlement value and the evaluation index of differential settlement value change rate; Construct comprehensive inspection and evaluation indicators for construction quality, set standard values ​​for comprehensive inspection and evaluation indicators for the overlap quality of new and old roadbeds, construct comprehensive inspection and evaluation levels for the overlap quality of new and old roadbeds, and conduct evaluation based on the comprehensive inspection and evaluation level classification table for the overlap quality of new and old roadbeds.

2. The method according to claim 1, characterized in that The average value and variance of the differential settlement value are calculated based on the distribution linear correlation diagram of the differential settlement value with the change of the detection route length L, and the average value and variance of the differential settlement value change rate are calculated based on the distribution linear correlation diagram of the differential settlement value change rate with the change of the detection route length L, including: Where, ΔV i is the differential settlement value of n monitoring sections along the line at time T, is the average value of differential sedimentation value ΔV, is the variance of the differential sedimentation value ΔV, K ΔV-i is the change rate of differential settlement values ​​at time T of n monitoring sections along the line, K is the rate of change of differential sedimentation value ΔV The average value of K is the rate of change of differential sedimentation value ΔV The variance of .

3. The method according to claim 2, characterized in that The evaluation indexes for differential settlement value and differential settlement value change rate are constructed as follows: in, is the evaluation index of differential sedimentation value ΔV, K is the rate of change of differential sedimentation value ΔV evaluation indicators.

4. The method according to claim 3, characterized in that The comprehensive inspection and evaluation indicators for construction quality include: Among them, η is the influence coefficient, η1+η2=1.

5. A comprehensive detection and evaluation system for the construction quality of the overlap between new and old roadbeds, the system being used to implement the method described in any one of claims 1 to 4, characterized in that: The system comprises: a first detection module, a second detection module, a third detection module, a fitting module, a drawing module, a calculation module, a construction module and an evaluation module; The first detection module is used to set n monitoring sections along the length direction of the line, and arrange a pair of settlement monitoring points in each monitoring section to detect the settlement value of the newly built roadbed and the settlement value of the existing roadbed respectively; The second detection module is used to monitor the vertical deformation of the roadbed at the settlement monitoring points of each monitoring section within a certain time range, and obtain the settlement value of the newly built roadbed and the settlement value and differential settlement value of the existing roadbed of each monitoring section within a certain time range; The third detection module is used to draw a settlement-time history scatter point distribution linear correlation diagram for the settlement values ​​of j newly built roadbeds and the settlement values ​​of j existing roadbeds in a certain monitoring section before a certain time T and time t; The fitting module is used to fit j differential settlement values ​​of a certain monitoring section before a certain time T and time t, draw a differential settlement-time relationship curve, and obtain the change rate of the differential settlement value at time T; The drawing module is used to obtain the differential settlement values ​​and the differential settlement value change rates at time T of n monitoring sections along the line, and respectively draw a distribution linear correlation diagram of the differential settlement value changing with the detection route length L, and a distribution linear correlation diagram of the differential settlement value change rate changing with the detection route length L; The calculation module is used to calculate the average value and variance of the differential sedimentation value according to the distribution linear correlation diagram of the differential sedimentation value changing with the detection route length L, and calculate the average value and variance of the differential sedimentation value change rate according to the distribution linear correlation diagram of the differential sedimentation value change rate changing with the detection route length L; The construction module is used to construct an evaluation index of a differential sedimentation value and an evaluation index of a differential sedimentation value change rate; The evaluation module is used to construct comprehensive inspection and evaluation indicators for construction quality, set standard values ​​for comprehensive inspection and evaluation indicators for the overlap of new and old roadbeds, construct comprehensive inspection and evaluation levels for the overlap of new and old roadbeds, and conduct evaluation based on a comprehensive inspection and evaluation level classification table for the overlap of new and old roadbeds.

6. The system according to claim 5, characterized in that The average value and variance of the differential settlement value are calculated based on the distribution linear correlation diagram of the differential settlement value with the change of the detection route length L, and the average value and variance of the differential settlement value change rate are calculated based on the distribution linear correlation diagram of the differential settlement value change rate with the change of the detection route length L, including: Where, ΔV i is the differential settlement value of n monitoring sections along the line at time T, is the average value of differential sedimentation value ΔV, is the variance of the differential sedimentation value ΔV, K ΔV-i is the change rate of differential settlement values ​​at time T of n monitoring sections along the line, K is the rate of change of differential sedimentation value ΔV The average value of K is the rate of change of differential sedimentation value ΔV The variance of .

7. The system according to claim 6, characterized in that The evaluation indexes for differential settlement value and differential settlement value change rate are constructed as follows: in, is the evaluation index of differential sedimentation value ΔV, K is the rate of change of differential sedimentation value ΔV evaluation indicators.

8. The system according to claim 7, characterized in that The comprehensive inspection and evaluation indicators for construction quality include: Among them, η is the influence coefficient, η1+η2=1.

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