CN108460518A - A kind of dam construction cross-operation Steric clashes frequency test method - Google Patents

Abstract

The invention discloses the invention discloses a method for testing the conflict frequency of dam pouring intersecting work spaces. During the pouring operation of the dam, RFID tags with different electronic codes are used to indicate the hazard source processes: cable crane load horizontal transportation, no-load horizontal transportation, loaded vertical transportation and no-load vertical transportation, disaster-affected body procedures: pouring, unloading , Vibration; use GPS to determine the influence space of the hazard source process and the work space of the disaster-affected body process. When the space overlaps, the readers equipped around the pouring warehouse surface will recognize the RFID tags, and the time measuring instrument will start to collect different RFID tags. The time indicators such as the start time of the appearance and the end time and duration of all the same tags leaving, so as to calculate the proportion of the total time of cross-work with space conflicts in the total time of the disaster-affected body, in order to measure the space in the whole process of dam pouring provide a basis for conflict.

Description

A method for testing the spatial conflict frequency of dam pouring cross work

technical field

The invention relates to a method for testing the conflict frequency of intersecting operation spaces in dam pouring. The method is mainly used to provide a quantitative analysis tool for measuring the intersecting operation space conflicts.

Background technique

The dam pouring process is complicated and difficult to control, especially due to the constraints of construction technology and construction site, the construction processes are closely connected, and multiple construction processes often need to be carried out at the same time, which is easy to generate a large number of cross operations.

Intersecting operations are connected in space and overlapping in scope of work, competing to occupy limited space at the same time will form space conflicts, and the higher the frequency of occupation and the longer the time, the greater the possibility of space conflicts causing disasters. The conflict of cross-working space increases the intersection probability of construction workers such as unloading and vibrating with the movement trajectories of concrete transportation machinery, and connects the contact channels of hazard-affected bodies such as human body or equipment and hazardous energy such as falling objects, which is very easy Cause construction safety accidents such as object strikes and falling objects.

The currently used tone operator is used to distinguish the frequency of spatial conflicts. This method relies too much on expert experience, is easily affected by subjective factors, and cannot accurately quantify the temporal frequency of spatial conflicts. At the same time, the measurement of cross-working space conflicts in dam pouring mostly starts from the perspective of space and less involves the time level, and mostly starts from the aspect of design rather than the aspect of design and construction, and there is also a lack of a practical method.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for testing the conflict frequency of cross-working spaces during dam pouring.

In order to realize above-mentioned technical characterictic, the purpose of the present invention is achieved like this: a kind of dam pouring cross work space conflict frequency testing method is characterized in that comprising the following steps:

Step 1: Use RFID tags with different electronic codes to indicate the hazard source process: cable crane load horizontal transport, empty load horizontal transport, load vertical transport, empty load vertical transport and disaster-affected body processes: pouring, unloading, vibration;

Step 2: Use GPS to determine the influence space of the hazard source process and the work space of the disaster-affected body process, and use the time measuring instrument to collect hazard source processes within a period of time when the dam begins to be poured: cable crane load horizontal transportation, no-load horizontal transportation, Loaded vertical transportation, empty-loaded vertical transportation and disaster-affected body processes: the time data of the start time and end time of pouring, unwinding and vibration;

Step 3: Analyze the construction time characteristics of the hazard source process and the hazard-bearing body process. By analyzing and comparing the start and end times of the hazard-bearing body process and the hazard-bearing body process during the dam construction process, calculate the overlapping time and judge its Whether there is a space conflict;

Step 4: With the repeated execution of the hazard source process and the disaster-affected body process, the overlapping time is continuously superimposed, and the total cumulative space conflict duration of each overlapping time in the construction process is calculated; The proportion of time reflects the time frequency of the space conflict of the hazard-affected body within the influence range of the hazard source.

The specific content of said step one is as follows:

Each RFID tag has a unique electronic code, and the RFID tags with different electronic codes respectively indicate that the disaster-affected body process is pouring V ₁ , liquidation V ₂ , vibration V ₃ , and the hazard source process is cable machine load horizontal transportation H ₁ , Empty horizontal transport H ₂ , load vertical transport H ₃ , and empty load vertical transport H ₄ .

The specific content of the second step is as follows:

Hazard source process: cable machine load horizontal transport, empty load horizontal transport, load vertical transport, empty load vertical transport and disaster-affected body process: construction personnel or construction machinery in pouring, unloading, and vibration carry corresponding RFID tags and GPS chip; the GPS chip reflects the real-time location information of construction personnel or construction machinery. When the location overlaps in space, the reader identifies the corresponding construction process through the RFID tag, and the time measuring instrument collects the starting time when each data tag begins to appear and The end time when all the tags of the same type leave is the start time S and end time F of the representative construction process.

The specific content of said step three is as follows:

The spatial conflict time frequency of the disaster-affected body within the influence range of the hazard source is abstracted as the occurrence of multiple operating time segments (S ^H , F ) of the hazard-affected process and the operating time segment (S ^V , F ^V ) of the hazard-affected body process. Dynamic overlapping, taking the first overlapping of the hazard source process H ₁ and the hazard-inducing body process V ₁ as an example, the extracted hazard source process H ₁ and hazard-inducing body process V ₁ are executed in their respective execution process queues At the start time and the end time, calculate the overlapping time length O ^H ₁ V ₁ of the two time intervals. If the overlapping time is 0, there is no spatial conflict; if the overlapping time is not 0, there is a spatial conflict. Calculate and record the overlapping time;

The specific process of weight calculation in step 4 is as follows:

During the construction process, the hazard source procedure H ₁ and the disaster-affected body procedure V ₁ are continuously executed, and the number of overlaps increases continuously. The first overlap is recorded as 1, and the number of overlaps is increased by 1 for each subsequent overlap, until the end of the construction process, the total number of overlaps is n, the total time of its overlap:

In the formula: i represents the overlapping times of the hazard source process and the disaster-affected body process;

There are 4 hazard source processes: load horizontal transport of cable crane, no-load horizontal transport, load vertical transport, no-load vertical transport and 3 disaster-affected body processes: pouring, unwinding, and vibration. The total time of their overlap:

In the formula: H _l and V _k respectively represent a non-specific hazard included in the hazard source process (H ₁ , H ₂ , ..., H ₄ ) and the hazard-affecting body process (V ₁ , V ₂ , V ₃ ) source process and hazard-bearing body process, l and k represent the number of hazard source processes and hazard-bearing body processes respectively;

According to the proportion of the spatial conflict time length ET in the total duration of the hazard-affected body process, the spatial conflict time frequency of the possibility of the hazard-affected body appearing within the influence range of the hazard source process is calculated:

The present invention has following beneficial effect:

(1) The present invention starts from the actual construction point of view, and provides a basis for the execution of the follow-up process on the basis of the conflict of the cross-working space in the actual construction process.

(2) From the perspective of time, the present invention provides a method for quantitatively calculating the spatial conflict frequency of dam pouring intersecting operations, providing scheduling basis for the optimization and organization and coordination of dam pouring intersecting operations, and improving the layout of the construction site.

(3) The present invention utilizes RFID technology to perform real-time information collection and transmission, which saves costs and greatly improves the accuracy of process information collection.

(4) The present invention has the characteristics of high accuracy, good real-time performance, low cost, and ease of use, so the method has strong feasibility.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is a calculation model of overlapping time lengths of two time intervals in Step 3 of the present invention.

Detailed ways

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

A method for testing the spatial conflict frequency of dam pouring cross operations, characterized in that it includes the following steps:

Step 1: Use RFID tags with different electronic codes to indicate the hazard source process: cable crane load horizontal transport, empty load horizontal transport, load vertical transport, empty load vertical transport and disaster-affected body processes: pouring, unloading, vibration;

Step 2: Use GPS to determine the influence space of the hazard source process and the work space of the disaster-affected body process, and use the time measuring instrument to collect hazard source processes within a period of time when the dam begins to be poured: cable crane load horizontal transportation, no-load horizontal transportation, Loaded vertical transportation, empty-loaded vertical transportation and disaster-affected body processes: the time data of the start time and end time of pouring, unwinding and vibration;

Step 3: Analyze the construction time characteristics of the hazard source process and the hazard-bearing body process. By analyzing and comparing the start and end times of the hazard-bearing body process and the hazard-bearing body process during the dam construction process, calculate the overlapping time and judge its Whether there is a space conflict;

Step 4: With the repeated execution of the hazard source process and the disaster-affected body process, the overlapping time is continuously superimposed, and the total cumulative space conflict duration of each overlapping time in the construction process is calculated; The proportion of time reflects the time frequency of the space conflict of the hazard-affected body within the influence range of the hazard source.

The specific content of said step one is as follows:

Each RFID tag has a unique electronic code, and the RFID tags with different electronic codes respectively indicate that the disaster-affected body process is pouring V ₁ , liquidation V ₂ , vibration V ₃ , and the hazard source process is cable machine load horizontal transportation H ₁ , Empty horizontal transport H ₂ , load vertical transport H ₃ , and empty load vertical transport H ₄ .

The specific content of the second step is as follows:

Hazard source process: cable machine load horizontal transport, empty load horizontal transport, load vertical transport, empty load vertical transport and disaster-affected body process: construction personnel or construction machinery in pouring, unloading, and vibration carry corresponding RFID tags and GPS chip; the GPS chip reflects the real-time location information of construction personnel or construction machinery. When the location overlaps in space, the reader identifies the corresponding construction process through the RFID tag, and the time measuring instrument collects the starting time when each data tag begins to appear and The end time when all the tags of the same type leave is the start time S and end time F of the representative construction process.

The specific content of said step three is as follows:

The spatial conflict time frequency of the hazard-affected body within the influence range of the hazard source is abstracted as multiple operating time segments (S ^H , F ^H ) of the hazard source process and the operating time segment (S ^V , F ^V ) of the hazard-affected body process Dynamic overlapping occurs. Take the first overlapping of the hazard source process H ₁ and the hazard-inducing body process V ₁ as an example. The extracted hazard source process H ₁ and hazard-inducing body process V ₁ are executed in their respective execution process queues Calculate the overlapping time length O ^H ₁ V ₁ of the two time intervals. As shown in Figure 1, if the overlapping time is 0, there is no space conflict; if the overlapping time is not 0, there is space Conflict, calculate and record its overlapping time;

The specific process of weight calculation in step 4 is as follows:

During the construction process, the hazard source procedure H ₁ and the disaster-affected body procedure V ₁ are continuously executed, and the number of overlaps increases continuously. The first overlap is recorded as 1, and the number of overlaps is increased by 1 for each subsequent overlap, until the end of the construction process, the total number of overlaps is n, the total time of its overlap:

In the formula: i represents the overlapping times of the hazard source process and the disaster-affected body process;

There are 4 hazard source processes: load horizontal transport of cable crane, no-load horizontal transport, load vertical transport, no-load vertical transport and 3 disaster-affected body processes: pouring, unwinding, and vibration. The total time of their overlap:

In the formula: H _l and V _k respectively represent a non-specific hazard included in the hazard source process (H ₁ , H ₂ , ..., H ₄ ) and the hazard-affecting body process (V ₁ , V ₂ , V ₃ ) source process and hazard-bearing body process, l and k represent the number of hazard source processes and hazard-bearing body processes respectively;

According to the proportion of the spatial conflict time length ET in the total duration of the hazard-affected body process, the spatial conflict time frequency of the possibility of the hazard-affected body appearing within the influence range of the hazard source process is calculated:

Claims (5)

1. A dam pouring cross-operation space conflict frequency test method is characterized in that it comprises the following steps: Step 1: Use RFID tags with different electronic codes to indicate the hazard source process: cable crane load horizontal transport, empty load horizontal transport, load vertical transport, empty load vertical transport and disaster-affected body processes: pouring, unloading, vibration; Step 2: Use GPS to determine the influence space of the hazard source process and the work space of the disaster-affected body process, and use the time measuring instrument to collect hazard source processes within a period of time when the dam begins to be poured: cable crane load horizontal transportation, no-load horizontal transportation, Loaded vertical transportation, empty-loaded vertical transportation and disaster-affected body processes: the time data of the start time and end time of pouring, unwinding and vibration; Step 3: Analyze the construction time characteristics of the hazard source process and the hazard-bearing body process. By analyzing and comparing the start and end times of the hazard-bearing body process and the hazard-bearing body process during the dam construction process, calculate the overlapping time and judge its Whether there is a space conflict; Step 4: With the repeated execution of the hazard source process and the disaster-affected body process, the overlapping time is continuously superimposed, and the total cumulative space conflict duration of each overlapping time in the construction process is calculated; The proportion of time reflects the time frequency of the space conflict of the hazard-affected body within the influence range of the hazard source. 2. a kind of dam pouring cross-working space conflict frequency test method according to claim 1, is characterized in that: the specific content of described step 1 is as follows: Each RFID tag has a unique electronic code, and the RFID tags with different electronic codes respectively indicate that the disaster-affected body process is pouring V ₁ , liquidation V ₂ , vibration V ₃ , and the hazard source process is cable machine load horizontal transportation H ₁ , Empty horizontal transport H ₂ , load vertical transport H ₃ , and empty load vertical transport H ₄ . 3. a kind of dam pouring cross work space conflict frequency test method according to claim 1, is characterized in that: the specific content of described step 2 is as follows: Hazard source process: cable machine load horizontal transport, empty load horizontal transport, load vertical transport, empty load vertical transport and disaster-affected body process: construction personnel or construction machinery in pouring, unloading, and vibration carry corresponding RFID tags and GPS chip; the GPS chip reflects the real-time location information of construction personnel or construction machinery. When the location overlaps, the reader identifies the corresponding construction process through the RFID tag, and the time measuring instrument collects the starting time when each data tag begins to appear and The end time when all the tags of the same type leave is the start time S and end time F of the representative construction process. 4. a kind of dam pouring cross-working space conflict frequency test method according to claim 1, is characterized in that: the specific content of described step 3 is as follows: The spatial conflict time frequency of the disaster-affected body within the influence range of the hazard source is abstracted as multiple operating time segments (S ^H , F ^H ) of the hazard source process and the operating time segment (S ^V , F ^V ) of the hazard-affected body process Dynamic overlapping occurs. Take the first overlapping of the hazard source process H ₁ and the hazard-absorbing body process V ₁ as an example. The extracted hazard source process H ₁ and hazard-absorbing body process V ₁ are executed in their respective execution process queues Calculate the overlapping time length O ^H ₁ V ₁ of the two time intervals. If the overlapping time is 0, there is no spatial conflict; if the overlapping time is not 0, there is a spatial conflict. Calculate and record the overlap time; 5. a kind of dam pouring cross work space conflict frequency test method according to claim 1, is characterized in that: the specific process of the weight calculation in described step 4 is as follows: During the construction process, the hazard source process H ₁ and the disaster-affected body process V ₁ are continuously executed, and the number of overlaps is continuously increasing. The first time the overlap is recorded as 1, and the number of overlaps is increased by 1 for each subsequent overlap, until the end of the construction process, the total number of overlaps is n, the total time of its overlap: In the formula: i represents the overlapping times of the hazard source process and the disaster-affected body process; There are 4 hazard source processes: load horizontal transport of cable crane, no-load horizontal transport, load vertical transport, no-load vertical transport and 3 disaster-affected body processes: pouring, unwinding, and vibration. The total time of their overlap: In the formula: H _l and V _k respectively represent a non-specific hazard included in the hazard source process (H ₁ , H ₂ , ..., H ₄ ) and the hazard-affecting body process (V ₁ , V ₂ , V ₃ ) source process and hazard-bearing body process, l and k represent the number of hazard source processes and hazard-bearing body processes respectively; According to the proportion of the spatial conflict time length ET in the total duration of the hazard-affected body process, the spatial conflict time frequency of the possibility of the hazard-affected body appearing within the influence range of the hazard source process is calculated: