CN111476507A - Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect - Google Patents

Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect Download PDF

Info

Publication number
CN111476507A
CN111476507A CN202010391254.6A CN202010391254A CN111476507A CN 111476507 A CN111476507 A CN 111476507A CN 202010391254 A CN202010391254 A CN 202010391254A CN 111476507 A CN111476507 A CN 111476507A
Authority
CN
China
Prior art keywords
pipeline
vibration
safety evaluation
value
safety
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010391254.6A
Other languages
Chinese (zh)
Inventor
管晓明
宋克志
刘泉维
张素磊
张鹏
杜明庆
朱珍
张良
王岗
尹鸿威
金昕
安建永
雷海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao University of Technology
Original Assignee
Qingdao University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao University of Technology filed Critical Qingdao University of Technology
Priority to CN202010391254.6A priority Critical patent/CN111476507A/en
Publication of CN111476507A publication Critical patent/CN111476507A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
    • G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • F42D3/04—Particular applications of blasting techniques for rock blasting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0635—Risk analysis of enterprise or organisation activities

Landscapes

  • Business, Economics & Management (AREA)
  • Human Resources & Organizations (AREA)
  • Engineering & Computer Science (AREA)
  • Strategic Management (AREA)
  • Economics (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Development Economics (AREA)
  • Educational Administration (AREA)
  • Game Theory and Decision Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Marketing (AREA)
  • Operations Research (AREA)
  • Quality & Reliability (AREA)
  • Tourism & Hospitality (AREA)
  • Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention relates to a multi-parameter coupling safety evaluation method for pipeline vibration response under the tunnel blasting effect, which belongs to the technical field of tunnel blasting and comprises the following steps of defining a pipeline mass point peak vibration speed V, a peak stress sigma and a frequency response parameter f, constructing a multi-parameter coupling safety evaluation index ξ, analyzing the dimension of the safety evaluation index, determining a ξ value and a pipeline safety threshold value, calculating a ξ value and comparing the ξ value with the ξ max value when the safety condition of a pipeline needs to be evaluated in actual engineering, wherein when ξ < ξ max, the pipeline is safe, and when ξ is more than or equal to ξ max, the pipeline is in a critical failure state or is damaged.

Description

Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect
Technical Field
The invention relates to a multi-parameter coupling safety evaluation method for pipeline vibration response under the tunnel blasting effect, and belongs to the technical field of tunnel blasting.
Background
Along with the development of the modern comprehensive transportation system, more and more complex environment tunnels penetrating structures such as dense urban building groups and underground municipal pipelines in short distance appear. At present, the following defects mainly exist in the dynamic response and safety control standards of pipelines under tunnel blasting vibration: (1) the current research mainly focuses on the vibration response research of single parameters such as the vibration speed, the strain, the stress, the main vibration frequency and the like of the pipeline under the blasting vibration, and many scholars have started to establish the mathematical relationship among the strain, the stress parameter, the vibration speed and the frequency response parameter by a data fitting mode, but the research of the coupling relationship among the parameters is still lacked. (2) From the perspective of a monitoring and evaluating method, safety evaluation of a pipeline is mainly realized by monitoring the vibration speed, but the vibration speed is an external measurement parameter of the pipeline and is influenced by the main vibration frequency, the safety of the pipeline is generally evaluated by combining two parameters of the vibration speed and the frequency, no relevant standard can be referred to at present, and safety evaluation is carried out according to engineering experience. (3) In terms of failure mechanism, the failure of the pipeline is mainly controlled by ultimate tensile stress or strain, so that the safety of the pipeline can be evaluated according to the stress or strain condition of the pipeline. However, the distribution rules of the main tensile stress and the vibration velocity on the pipeline are not consistent, and the positions where the maximum tensile stress or strain and the maximum vibration velocity occur are not the same, that is, it is not reasonable to evaluate the safety of the pipeline by monitoring the maximum vibration velocity of the pipeline only, because the position corresponding to the maximum vibration velocity is not necessarily the maximum stress, mainly because of the frequency. Although the vibration speed is small in some parts, the frequency is relatively low and is close to the main vibration frequency of the pipeline, so that the stress is relatively large at this time, and therefore, the vibration speed is unreasonable to monitor only.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a multi-parameter coupling safety evaluation method for pipeline vibration response under the tunnel blasting effect, which is used for accurately calculating and identifying the damage of a pipeline.
The invention relates to a multiparameter coupling safety evaluation method for pipeline vibration response under the action of tunnel blasting, which comprises the following steps of:
s1, determination of multiple parameters: a number of parameters are specified for pipeline particles, including:
the method comprises the following steps of (1) obtaining a peak value vibration velocity V, a peak value stress sigma and a frequency response parameter f, wherein the frequency f is the main vibration frequency of the peak value vibration velocity V;
s2, constructing a safety evaluation index, namely constructing a new multi-parameter coupling safety evaluation index ξ of pipeline vibration response:
Figure BDA0002485850200000011
s3: dimensional analysis of safety evaluation indexes:
Figure BDA0002485850200000021
in the formula: the dimension of V is m/s;
the dimension of sigma is N/m2Conversion to the standard unit is (kg)/(s)2m)；
The dimension of f is 1/s;
f represents force, and the dimension is N;
l represents unit length, dimension m;
through dimension analysis, the safety evaluation index ξ finally reflects the stress condition on unit length, and is consistent with the mechanism that the damage of the pipeline is mainly controlled by stress under the blasting vibration of the tunnel;
determining a ξ value S4, namely determining the position of a pipeline which is easy to damage according to a ξ value, wherein the larger the ξ value is, the more serious the vibration damage of the pipeline under the vibration of tunnel blasting is, so that the important monitoring is carried out on a plurality of positions with larger ξ values during field blasting;
s5 determination of pipeline safety threshold, calculating the maximum ξ of ξ value according to the limit safety vibration speed, the maximum limit tensile stress and the natural vibration frequency of the pipelinemaxAnd at a maximum value of ξmaxAs a threshold for evaluating the safety of the pipeline;
s6: ξ value and ξmaxComparing the values, namely calculating ξ value and comparing with ξ value when the safety condition of the pipeline needs to be evaluated in the actual engineeringmaxComparing the values;
s7: and (4) judging a safety evaluation method: the multi-parameter coupling damage safety evaluation method of the pipeline comprises the following steps:
when ξ<ξmaxThe pipeline is safe;
when ξ is more than or equal to ξmaxThe pipeline is in a critical failure state or has failed.
Preferably, in step S2, the safety evaluation index ξ comprehensively considers the influence of the pipeline vibration speed, stress and frequency, and couples the response parameters.
Preferably, as shown in the formula (1) in the step S2, the larger the vibration speed of the pipeline is, the higher the stress is, and the lower the frequency is, the larger the pipeline vibration response is, the more easily the pipeline is damaged, or the more serious the damage is, which indicates that the evaluation index conforms to the mechanism of the pipeline vibration damage and conforms to the requirement of evaluating the vibration safety condition of the pipeline.
Preferably, in step S5, the distribution rules of the main tensile stress and the vibration speed on the pipeline are not consistent, and the maximum limit tensile stress or strain is not the same as the position where the limit safe vibration speed occurs.
Preferably, in step S5, although the vibration velocity is small at some position on the pipeline, the frequency is relatively low and close to the main vibration frequency of the pipeline, so that the stress is rather large.
Preferably, in step S7, the multi-parameter coupling damage safety evaluation method for a pipeline can accurately perform quantitative evaluation on the pipeline damage caused by the burst vibration when the tunnel passes through the underground pipeline in a short distance.
The method has the advantages that (1) a new multi-parameter coupling safety evaluation index ξ of pipeline vibration response is established, a coupling relation among strain, stress parameters, vibration speed and frequency response parameters is established, (2) the safety evaluation of the pipeline is judged through the multi-parameter coupling safety evaluation index ξ, reference is provided for monitoring and evaluating the vibration response, and (3) the maximum vibration speed and the stress and frequency are considered, the defect that single-parameter evaluation is unreasonable is overcome, whether the pipeline is evaluated to be safe or not is more reasonable, and damage of the pipeline can be accurately calculated and evaluated.
Drawings
FIG. 1 is a flow diagram of the present invention.
FIG. 2(a) is a schematic representation of the radial peak velocity of the pipeline of the present invention.
FIG. 2(b) is a schematic representation of the pipeline radial peak stress of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1, the multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting according to the present invention specifically includes the following steps:
s1: specifying a peak vibration velocity V, a peak stress sigma and a frequency response parameter f of a pipeline mass point, wherein the frequency is the main vibration frequency of the peak vibration velocity;
s2, providing a new multi-parameter coupling safety evaluation index ξ of pipeline vibration response:
Figure BDA0002485850200000031
the evaluation index comprehensively considers the influences of the vibration speed, the stress and the frequency of the pipeline, and couples the response parameters. As seen from the formula (1): the larger the vibration speed of the pipeline is, the higher the stress is, the lower the frequency is, the larger the vibration response of the pipeline is, the more easily the pipeline is damaged, or the more serious the damage condition is, the evaluation index accords with the vibration damage mechanism of the pipeline, and the vibration safety condition of the pipeline can be well evaluated;
s3: performing dimensional analysis on the evaluation index:
the dimension of V is m/s; the dimension of sigma is N/m2Conversion to the standard unit is (kg)/(s)2m), F is 1/s, F is stress and is N, L is unit length and is m;
Figure BDA0002485850200000032
as can be seen from equation (2), the safety evaluation index ξ finally reflects the stress condition per unit length, and is consistent with the mechanism that the damage of the pipeline under tunnel blasting vibration is mainly controlled by stress.
S4, determining the position where the pipeline is easy to damage according to ξ values, wherein the bigger the ξ value is, the more serious the vibration damage of the pipeline under the tunnel blasting vibration is, so that the important monitoring can be carried out on several positions with larger ξ values during the field blasting;
s5, calculating the maximum ξ of ξ values according to the limit safe vibration speed, the maximum limit tensile stress and the natural vibration frequency of the pipelinemaxUsing the obtained value as a threshold value for evaluating the safety of the pipeline;
s6, when the safety condition of the pipeline needs to be evaluated in the actual engineering, calculating ξ value, and comparing with ξmaxComparing;
s7: the multi-parameter coupling damage safety evaluation method of the pipeline comprises the following steps:
when ξ<ξmaxThe pipeline is safe;
when ξ is more than or equal to ξmaxThe pipeline is in a critical failure state or has failed;
the effects of the present invention will be further described with reference to fig. 2(a) to 2(b) and the following table.
Multi-parameter coupling damage safety evaluation table of pipeline
Figure BDA0002485850200000041
Substituting the peak vibration speed V, the peak stress sigma and the frequency response parameter f into the formula (1) through five examples of measuring points A-E to obtain a safety evaluation index ξ value, and then obtaining the maximum value ξ of the ξ value according to the limit safety vibration speed, the maximum limit tensile stress and the natural frequencymaxAnd ξmaxComparing when ξ<ξmaxThe pipeline is safe when ξ is more than or equal to ξmaxThe pipeline is in a critical failure state or has failed. Therefore, the measuring point A, B, D is free of damage, and the measuring points C and E are damaged, so that the damage of the pipeline is accurately calculated and identified.
The method establishes a coupling relation among strain and stress parameters, vibration speed and frequency response parameters by constructing a new multi-parameter coupling safety evaluation index ξ of pipeline vibration response, judges by using a multi-parameter coupling safety evaluation index ξ, provides reference for monitoring and evaluating the vibration response, considers the maximum vibration speed and the stress and the frequency, and evaluates the safety of the pipeline more reasonably.
The method can be widely applied to tunnel blasting occasions, and can accurately quantitatively evaluate the pipeline damage caused by blasting vibration particularly when a tunnel passes through an underground pipeline in a short distance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A multiparameter coupling safety evaluation method for pipeline vibration response under the action of tunnel blasting is characterized by comprising the following steps:
s1, determination of multiple parameters: a number of parameters are specified for pipeline particles, including:
the method comprises the following steps of (1) obtaining a peak value vibration velocity V, a peak value stress sigma and a frequency response parameter f, wherein the frequency f is the main vibration frequency of the peak value vibration velocity V;
s2, constructing a safety evaluation index, namely constructing a new multi-parameter coupling safety evaluation index ξ of pipeline vibration response:
Figure FDA0002485850190000011
s3: dimensional analysis of safety evaluation indexes:
Figure FDA0002485850190000012
in the formula: the dimension of V is m/s;
the dimension of sigma is N/m2Conversion to the standard unit is (kg)/(s)2m)；
The dimension of f is 1/s;
f represents force, and the dimension is N;
l represents unit length, dimension m;
through dimension analysis, the safety evaluation index ξ finally reflects the stress condition on unit length, and is consistent with the mechanism that the damage of the pipeline is mainly controlled by stress under the blasting vibration of the tunnel;
determining a ξ value S4, namely determining the position of a pipeline which is easy to damage according to a ξ value, wherein the larger the ξ value is, the more serious the vibration damage of the pipeline under the vibration of tunnel blasting is, so that the important monitoring is carried out on a plurality of positions with larger ξ values during field blasting;
s5 determination of pipeline safety threshold, calculating the maximum ξ of ξ value according to the limit safety vibration speed, the maximum limit tensile stress and the natural vibration frequency of the pipelinemaxAnd at a maximum value of ξmaxAs a threshold for evaluating the safety of the pipeline;
s6: ξ value and ξmaxComparing the values, namely calculating ξ value and comparing with ξ value when the safety condition of the pipeline needs to be evaluated in the actual engineeringmaxComparing the values;
s7: and (4) judging a safety evaluation method: the multi-parameter coupling damage safety evaluation method of the pipeline comprises the following steps:
when ξ<ξmaxThe pipeline being safe；
When ξ is more than or equal to ξmaxThe pipeline is in a critical failure state or has failed.
2. The method of claim 1, wherein in step S2, the safety evaluation index ξ comprehensively considers the effects of the vibration velocity, stress and frequency of the pipeline, and couples the response parameters.
3. The multiparameter coupling safety evaluation method for pipeline vibration response under tunnel blasting according to claim 1 or 2, wherein the formula (1) in step S2 shows that the larger the vibration speed of the pipeline, the higher the stress, and the lower the frequency, the larger the pipeline vibration response, the more easily the pipeline is damaged, or the more serious the damage is, which indicates that the evaluation index conforms to the mechanism of pipeline vibration damage, and conforms to the requirement of evaluating the vibration safety of the pipeline.
4. The multiparameter-coupled safety evaluation method for the vibration response of the pipeline under the tunnel blasting action of claim 1, wherein in step S5, the distribution rules of the main tensile stress and the vibration speed on the pipeline are not consistent, and the maximum limit tensile stress or strain is not the same as the position where the limit safe vibration speed occurs.
5. The method of claim 4, wherein in step S5, the vibration velocity of some parts of the pipeline is small, but the frequency is low and close to the main vibration frequency of the pipeline, so the stress is large.
6. The multiparameter coupling safety evaluation method for pipeline vibration response under tunnel blasting according to claim 1, wherein in step S7, the multiparameter coupling damage safety evaluation method for pipeline can accurately quantitatively evaluate pipeline damage caused by blasting vibration when a tunnel passes through an underground pipeline in a short distance.
CN202010391254.6A 2020-05-11 2020-05-11 Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect Withdrawn CN111476507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010391254.6A CN111476507A (en) 2020-05-11 2020-05-11 Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010391254.6A CN111476507A (en) 2020-05-11 2020-05-11 Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect

Publications (1)

Publication Number Publication Date
CN111476507A true CN111476507A (en) 2020-07-31

Family

ID=71764405

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010391254.6A Withdrawn CN111476507A (en) 2020-05-11 2020-05-11 Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect

Country Status (1)

Country Link
CN (1) CN111476507A (en)

Similar Documents

Publication Publication Date Title
CN109490072B (en) Detection system for civil engineering building and detection method thereof
CN111738620A (en) Well leakage risk prediction and leakage stoppage decision system and method based on association rules
CN103076394A (en) Safety evaluation method for ocean platform based on integration of vibration identification frequencies and vibration mode
CN110889440A (en) Rockburst grade prediction method and system based on principal component analysis and BP neural network
CN111444588A (en) Pipeline circumferential weld reliability evaluation method based on strain
CN111678992A (en) Nondestructive testing method for identifying damage type of concrete structure
CN114091320B (en) Method and device for predicting corrosion failure time of natural gas pipeline
CN110990978A (en) Bolt state monitoring method and device
CN107657121B (en) Aircraft structure performance prediction processing method and system based on corrosion level evaluation
CN111695176A (en) Method and device for evaluating condition of stay cable of large-span cable-stayed bridge
CN113626970A (en) Method and system for evaluating corrosion residual life of common pipe gallery pipeline
CN117852122A (en) Method for detecting existing stress of steel strand in PC bridge structure
CN114417470A (en) Bridge crack safety evaluation method and device based on BIM
CN111476507A (en) Multi-parameter coupling safety evaluation method for pipeline vibration response under tunnel blasting effect
CN109872511B (en) Self-adaptive two-stage alarm method for monitoring axial displacement sudden change
CN112131781A (en) Steel structure damage detection method based on full-connection neural network and transfer rate function
CN110993132A (en) Transient monitoring method for supporting fatigue monitoring function of nuclear power plant
CN113515840B (en) Method for predicting rock mass excavation disturbance area and related equipment
CN115906663A (en) Building safety evaluation model establishing method, evaluation method, server and system
CN115713312A (en) Combined identification method and device for unfavorable working conditions of hydraulic and hydroelectric engineering environmental quantity
Stashkiv et al. Test Data Processing Use for Structural Fatigue Life Assessment.
CN111199089B (en) Method and device for analyzing reliability and sensitivity of pipeline circumferential weld
CN109855536B (en) Oil and gas pipeline blockage detection method based on strain measurement
CN113487141A (en) Bearing state evaluation method based on multi-source information clustering fusion
Shlyushenkov et al. Modeling the fatigue failure processes in evaluating the reliability of machines and their components

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20200731