Method for arranging shield segments by automatically calculating and generating standard rings and turning rings

Abstract

The present invention discloses a shield segment layout method for automatically calculating and generating standard rings and turning rings, comprising the following steps: calculating and inputting the axis linear elements in segments according to the plane curve of the design axis; calculating the average rotation angle β of the turning ring segments according to the commonly used segment points selected on site statistically; inputting the mileage of the segment types one by one from the starting mileage of the interval according to the segment type distribution given in the design drawing, and selecting the name of the segment type until the ending mileage of the interval; starting from the starting mileage, calculating the segment layout plan for each segment of the axis to form a segment layout plan table. The present invention reduces or replaces manual operations, automatically generates a reasonable layout and plan for standard rings + left and right turning ring segments, and plays a role in standardizing the layout and plan of standard rings + turning ring segments on site and optimizing the shield tunnel construction process.

Description

Technical Field

[0001] The present invention relates to the technical field of shield construction. More specifically, the present invention relates to a shield segment layout method for automatically calculating and generating standard rings and turning rings. Background Art

[0002] In the prior art, segment pre-layout and segment plans mainly rely on manual work, which is not only cumbersome in calculation but also has repetitive workload. Moreover, due to the uneven experience and quality of personnel, manual segment layout is also prone to problems such as unreasonable layout and plans, or inconsistent concepts and standards before and after, which has a certain adverse impact on the transportation of segments to the site and tunnel production. The existing segment pre-layout system only relies on the tunnel axis line shape, and by calculating the distance between the fitting center points of the end faces of the segments to be assembled ring by ring and the target points of the design axis, the point with the smallest distance is selected as the optimal point, without considering the influence of actual shield tunnel production and on-site construction organization factors, resulting in a low applicability rate of the layout segment plan at the construction site and the product being a mere formality. Summary of the Invention

[0003] The object of the present invention is to provide a shield segment layout method for automatically calculating and generating standard rings and turning rings, reducing or replacing manual operations, automatically generating reasonable standard rings, left and right turning ring segment layouts and plans, and playing a role in standardizing the layout and plans of standard rings + turning rings on site and optimizing the shield tunnel construction process.

[0004] The technical solution adopted by the present invention to solve this technical problem is: a shield segment layout method for automatically calculating and generating standard rings and turning rings, comprising the following steps:

[0005] S1: According to the horizontal curve of the design axis, calculate and input the axis line shape elements section by section;

[0006] S2: According to the commonly used segment points selected on site statistically, calculate the average rotation angle β of the turning ring segments;

[0007] According to the segment type distribution given in the design drawing, input the mileage of the segment type section by section starting from the starting mileage of the interval, and select the name of the segment type until the ending mileage of the interval;

[0008]

[0009] S3: Starting from the starting mileage, calculate the segment arrangement plan for each section of the axis to form a segment arrangement plan table;

[0010] ​S4: In the stored segment lining layout plan, according to the information of the distribution of different segment types along the mileage of the section, divide a certain straight line segment, transition curve segment or circular curve segment containing the corresponding mileage into two equal parts according to this mileage. The total number of segment rings of the two divided axis lines is allocated according to the length ratio of the two axis lines, and then calculate the segment lining layout plan according to S3; if the mileage range of an axis line segment includes both the starting mileage and the ending mileage of the distribution of a certain segment type, then divide this axis line segment into three equal parts according to the mileage of the segment type, and calculate the segment lining layout of each of the three axis lines;

[0011] After the axis line segment is split according to the mileage of each segment type distribution, the axis line segment within the mileage range of a certain segment type distribution is entered with the name of this segment type, forming a new detailed section segment total layout plan containing segment type information. This table arranges the segment lining layout plans with exactly the same attributes in sequence from top to bottom according to the section mileage;

[0012] S5: Summarize and calculate the above-mentioned detailed section segment total layout plan to obtain the section segment total layout plan.

[0013] Preferably, the axis line linear elements are segmented according to straight line segments and curve segments; the parameters of the straight line segment are the starting mileage and the ending mileage of the straight line segment, that is, the length L of the straight line segment ZH ; the curve segment is divided into two symmetric transition curves and a middle circular curve, select left turn or right turn, and enter the curve length L, transition curve length L S , curve deflection angle α and circular curve radius R parameters.

[0014] Preferably, the calculation method of the axis line linear elements is:

[0015] Circular curve length L R = L - 2L S ;

[0016] Circular curve angle α R = L R ×180° / πR;

[0017] Number of circular curve segment rings H R = L R / W, where W is the segment ring width;

[0018] Average circular curve deflection angle θ R = α R / H R ;

[0019] Number of transition curve segment rings H S = L S / W;

[0020] Transition curve angle αS =(α - α R ) / 2;

[0021] Average deflection angle θ of the transition curve S = α S / H S ;

[0022] Preferably, when the starting mileage or the ending mileage of the interval is located in the transition curve section or the circular curve section, the length L S ' or L R ' within the mileage range of the interval of this section of the transition curve or the circular curve is separately entered;

[0023] According to the proportion of L S ' to L S or the proportion of L R ' to L R , the corresponding α S ' and α R ' are obtained.

[0024] Preferably, for the single - segment segment linings of the left and right turning rings in S2, the deflection angles β 右转弯 , β 左转弯 are calculated according to the following formulas (1) and (2), and the average deflection angle β of the segment linings can be obtained by calculating the weighted average based on the commonly used segment lining positions in statistics;

[0025]

[0026]

[0027] In the formula, s is the segment taper, m is the segment lining position, n is the total number of segment lining positions, and d is the outer diameter of the segment lining.

[0028] Preferably, the segment lining arrangement plan in S3 includes:

[0029] The segment ring number Num, length L, total number of segment rings H, number of standard rings H B , number of left - turning rings H Z and number of right - turning rings H Y of this section of the line;

[0030] Arrange the segment lining arrangement plans of each axis segment in order of mileage from top to bottom until the ending mileage of the interval, and finally obtain the overall segment lining arrangement plan of the interval.

[0031] Preferably, the total segment schedule in S5 includes the total number of rings, standard rings, left-turn rings, and right-turn rings of type I segments, the total number of rings, standard rings, left-turn rings, and right-turn rings of type II segments, etc., as well as the total number of standard rings, type I rings, type II rings, type III rings, the total number of left-turn rings, type I rings, type II rings, type III rings, etc., and the total number of segment rings in the entire section. Finally, a detailed segment arrangement plan for the above section and a table of the total segment plan for the section are output.

[0032] Preferably, it further includes S6: input two parameters, the initial ring number of the month and the planned number of rings for the month, and search for the axis segment where the initial ring number H C is located and the axis segment of the end-of-month ring number H M in the total segment arrangement schedule for the section.

[0033] Preferably, the specific method of S6 is as follows: Assume that the axis number of a certain section is i. If the sum of the total number of rings of all axes before the i-th axis, H1 + H2 + … + H i-1 < H C , and the sum of the total number of rings of the i-th axis and all previous axes, H1 + H2 + … + H i-1 + H i > H C , then the initial ring number H C is within the i-th axis. The same method includes the j-th axis of the end-of-month ring number H M ;

[0034] Divide the above two axes into two parts according to the initial ring number and the end-of-month ring number, and recalculate the segment arrangement plan for the 4 split axes according to the method of S4. Delete the segment arrangement plans of all axis segments before and after the initial and end-of-month ring numbers to obtain the current monthly segment arrangement plan;

[0035] According to the method of S5, obtain the monthly total segment schedule, and automatically output the table of the monthly segment arrangement plan and the monthly total segment plan; The daily segment plan can be calculated and generated in the same way.

[0036] The present invention has at least the following beneficial effects:

[0037] (1) Compared with the existing method that only performs segment layout based on the design axis line shape, this method fully considers the influence of on-site construction factors on the segment layout plan. On the basis of calculating the segment layout and plan of each curved segment according to the design axis line shape, based on the construction experience summary of multiple projects, a certain amount of reasonable turning ring segment allowance is provided. For example, a certain amount of turning rings need to be configured in the straight section to facilitate the deviation correction of the shield machine and adjust the oil cylinder stroke difference, etc. This method has a reasonable plan and strong on-site applicability.

[0038] (2) This method automatically outputs the overall plan, monthly plan, and daily plan tables for segment lining in the tunnel section. The overall plan for the tunnel section can guide the segment factory to organize segment production. The monthly segment plan can guide the segment factory to arrange the storage and transportation of segments in advance. The daily segment plan can meet the daily production needs at the construction site and match the maximum storage capacity of segments at the site. Therefore, this method is closely in line with the construction requirements at the site and has strong construction guidance.

[0039] (3) This method takes into account the arrangement of segment types (such as Type I, Type II, Type III, etc.) along the tunnel section line, and finally obtains a detailed segment layout plan for each axis segment with the same attributes (the same straight line segment, transition curve segment, or circular curve segment, and the same segment type). After providing it to the construction site, it can effectively guide the on-site construction without any further processing.

[0040] Other advantages, objectives, and features of the present invention will be partially reflected in the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a flow chart of the segment layout plan method for the standard ring + turning ring shield segment of the present invention;

[0042] Figure 2 is a diagram of the axis line shape elements of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The present invention will be described in detail and completely below with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that: the technical solutions and technical features provided in each part including the following description of the present invention can be combined with each other without conflict.

[0044] In addition, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, rather than all embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] The following further describes the present invention in detail in conjunction with the accompanying drawings and embodiments, and the specific implementation process is as follows:

[0046] As Figures 1-2As shown in the figure, the present invention aims at a segment layout planning method for standard ring + turning ring shield segments. Considering the influence of tunnel alignment and on-site construction factors on segment layout planning, on the basis of calculating the layout and planning of each section of curved segments according to the design axis alignment, and summarizing the construction experience of multiple projects, a certain amount of reasonable surplus of turning ring segments is provided to achieve reasonable pre-layout of segments and automatically generate the overall segment layout plan, monthly layout plan and daily layout plan, which specifically includes the following steps:

[0047] 1) First, input the axis line shape elements in segments in the axis input module, which are mainly divided into straight segments and curved segments: the main parameters of the straight segment are the starting mileage and ending mileage of the straight segment, and the length L of the straight segment is obtained. ZH ; The curved segment is divided into two symmetric transition curves and the middle circular curve. It is necessary to select left turn or right turn, and input 4 parameters including the curve length L, transition curve length L S , curve deflection angle α and circular curve radius R. The main line shape parameters such as the length of the straight segment and the lengths, deflection angles, and average deflection angles of the transition curve and circular curve are automatically calculated.

[0048] For the starting mileage or ending mileage of the interval located in the transition curve segment or circular curve segment, it is necessary to separately input the length L S ’ or L R ’ within the mileage range of the interval of this section of the transition curve or circular curve.

[0049] Then, input each straight segment and curved segment in sequence according to the mileage size. The system automatically numbers and stores the input and calculated line shape parameter information in segments according to the numbers, and displays it on the interactive interface.

[0050] The specific calculation steps of the curved segment are as follows: First, calculate the length L R of the circular curve = L - 2L S , then calculate the circular curve angle α R = L R × 180° / πR. Subsequently, calculate the number of circular curve segments H R = L R / W, where W is the segment ring width. Then calculate the average circular curve deflection angle θ R = α R / H R . Subsequently, the number of transition curve segments H S = L S / W, the transition curve angle α S = (α - α R ) / 2, the average transition curve deflection angle θ S = α S / H S . According to L S ’ or L R ’ accounting for LS or L R Based on the ratio, the corresponding α is obtained S ’ and α R ’.

[0051] 2) Based on the commonly used segment positions statistically, calculate the average rotation angle β of the turning ring segments; according to the distribution of segment types (such as type I, type II, type III, etc.) given in the design drawing along the interval line, starting from the starting mileage of the interval, input the mileage of the segment type into the segment type input module section by section, and select the name of the segment type (type I, type II, type III, etc.) until the end mileage of the interval.

[0052] The rotation angles β of the single-point segments of the left and right turning rings 右转弯 , P 左转弯 The calculation formulas are as follows in formulas (1) and (2). The average segment rotation angle β can be obtained by calculating the weighted average based on the commonly used segment positions statistically:

[0053]

[0054]

[0055] In the formula, s is the segment taper, m is the segment position, n is the total number of segment positions, and d is the outer diameter of the segment.

[0056] 3) Starting from the starting mileage, the interval segment arrangement calculation module automatically calculates the segment arrangement plan for each section of the axis (each individual straight line, transition curve, or circular curve section). The segment arrangement plan includes the segment ring number Num, length L, total number of segment rings H, number of standard rings H B , number of left turning rings H Z and number of right turning rings H Y . Arrange the segment arrangement plans of each section of the axis from top to bottom in the order of mileage until the end mileage of the interval, and finally obtain the overall segment arrangement plan for the interval.

[0057] Configure 80% of the standard rings for the total number of rings in the straight line section, and configure 10% of the left turning rings and 10% of the right turning rings for the needs of shield machine deviation correction, adjusting the oil cylinder stroke difference, and vertical alignment fitting, etc.; for the curve section, calculate the corresponding turning rings according to the curve angle. Taking the left turning circular curve section as an example, the number of left turning rings needs to be calculated according to the curve angle, and then calculate the number of left turning rings from the total number of rings - rotation angle. Among the remaining segments, allocate them according to 80% standard rings + 10% left turning rings + 10% right turning rings. The actual segment allocation ratio can be adjusted according to different projects. According to the above method, arrange the segment arrangement plans of each section of the axis from top to bottom in the order of mileage until the end mileage of the interval, and finally obtain the overall segment arrangement plan for the interval.

[0058] The specific calculation method is as follows: Assume that the axis number of a certain section is i, and the segment ring number Num of this axis = "H1 + H2 + … + H i-1 +1 to H1 + H2 + … + H i-1 + H i ". For example, if the total number of ring sums of all axes before the current axis is 100 rings and the total number of rings of the current axis is 50 rings, then the segment ring number of the current axis is: 101 to 150. If the current axis is the first axis of the interval, then the segment ring number Num = "1 to H1"; for the straight line segment L = L ZH , the total number of segment rings H = L ZH / W, the number of standard rings H B = H × 80%, the number of left-turn rings H Z = H × 10%, the number of right-turn rings H Y = H × 10%; for the transition curve segment (taking the curve as a left turn as an example) L = L S or L S ’, the total number of segment rings H = L S / W, the number of left-turn rings H Z = α S / β + (H - α S / β) × 10%, the number of standard rings H B = (H - α S / β) × 80%, the number of right-turn rings H Y = (H - α S / β) × 10%; for the circular curve segment (taking the curve as a left turn as an example) L = L R or L R ’, the total number of segment rings H = L R / W, the number of left-turn rings H Z = α R / β + (H - α R / β) × 10%, the number of standard rings H B = (H - α R / β) × 80%, the number of right-turn rings H Y = (H - α R / β) × 10%.

[0059] 4) In the stored segment lining arrangement plan table, according to the information of different segment types (such as type I, type II, type III, etc.) distributed along the mileage of the section, a certain straight line segment, transition curve segment or circular curve segment containing the corresponding mileage is divided into two equal parts according to this mileage. The total number of segment rings of the two divided axis segments is distributed according to the length ratio of the two axis segments, and then the corresponding standard ring number, left - turning ring number and right - turning ring number are calculated according to the method and ratio in step 3; if the mileage range of an axis segment includes both the starting mileage and the ending mileage of the distribution of a certain segment type, then this axis segment is divided into three equal parts according to the mileage of the segment type, and the segment lining arrangements of the three axis segments are automatically calculated.

[0060] After all axis segments are split according to the mileage of each segment type distribution, the axis segments within the mileage range of a certain segment type distribution are automatically entered with the name of this segment type (such as type I, type II, type III, etc.), forming a new detailed section segment total arrangement plan containing segment type information. This table arranges the segment lining plans with exactly the same attributes in sequence from top to bottom according to the sequence of section mileage.

[0061] 5) Automatically summarize and calculate the above - mentioned detailed section segment total arrangement plan to obtain the section segment total plan table, including the total number of rings, standard ring number, left - turning ring number, right - turning ring number of type I segments, the total number of rings, standard ring number, left - turning ring number, right - turning ring number of type II segments, etc., as well as the total number of standard rings, number of type I rings, number of type II rings, number of type III rings, the total number of left - turning rings, number of type I rings, number of type II rings, number of type III rings, etc., and the total number of segment rings in the entire section, and finally output the EXCEL table of the detailed segment lining plan of the above - mentioned section and the section segment total plan.

[0062] 6) Input two parameters, the initial monthly ring number and the monthly planned ring number, into the monthly planned segment layout calculation module. The monthly planned segment layout calculation module automatically searches in the section segment total arrangement plan table for the axis segment where the initial monthly ring number H C is located and the axis segment of the end - of - month ring number H M (initial monthly ring number + monthly planned ring number). The specific method is as follows: Assume that the number of a certain axis segment is i. If the sum of the total number of rings of all axis segments before the i - th axis segment H1 + H2+…+H i-1 <H C , and the sum of the total number of rings of the i - th axis segment and all previous axis segments H1 + H2+…+H i-1 +H i >H C , then the initial monthly ring number H C is within the i - th axis segment. The same method is used for the end - of - month ring number H MThe j-th axis line. Divide the above two axis lines into two equal parts according to the number of rings at the beginning of the month and the number of rings at the end of the month, and recalculate the segment arrangement plan of the 4 axis lines split out according to the method in step 4). Delete the segment arrangement plans of all axis line segments before and after the ring numbers at the beginning and end of the month to obtain the current monthly segment arrangement plan sought. According to the method in step 5), obtain the total monthly segment schedule, and automatically output the EXCEL tables of the monthly segment arrangement plan and the total monthly segment plan. The daily segment plan can be calculated and generated by the same method.

[0063] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A method for arranging shield segments to automatically calculate and generate standard rings and turning rings, characterized in that It includes the following steps: S1: According to the horizontal curve of the design axis, calculate and input the axis line elements section by section; S2: According to the common segment positions of the segments selected on site statistically, calculate the average rotation angle β of the turning ring segments; According to the segment type distribution given in the design drawing, input the mileage of the segment types section by section starting from the starting mileage of the section, and select the name of the segment type until the ending mileage of the section; S3: Starting from the starting mileage, calculate the segment arrangement plan for each section of the axis to form a segment arrangement plan table; In the stored segment arrangement plan table, according to the information of the distribution of different segment types along the section mileage, divide a certain straight line section, transition curve section or circular curve section containing the corresponding mileage into two equal parts according to this mileage. The total number of segments of the two divided axes is distributed according to the length ratio of the two axes, and then calculate the segment arrangement plan according to S3; If the mileage range of an axis section includes both the starting mileage and the ending mileage of the distribution of a certain segment type, divide this axis section into three equal parts according to the mileage of the segment type and calculate the segment arrangement of the three axes respectively; After the axis sections are split according to the mileage of each segment type distribution, input the name of the segment type of the axis section within the mileage range of a certain segment type distribution to form a new detailed total segment arrangement plan table of the section containing segment type information. This table arranges the segment arrangement plans with exactly the same attributes of each section in sequence from top to bottom according to the section mileage; S5: Conduct a summary calculation on the above-mentioned detailed total segment arrangement plan table of the section to obtain the total segment plan of the section.

2. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 1, characterized in that The axis linear elements are segmented according to straight line segments and curve segments; the parameters of the straight line segment are the starting mileage and the ending mileage of the straight line segment, that is, the length L of the straight line segment ZH ; The curve segment is divided into two symmetric transition curves and a circular curve in the middle. Select a left turn or a right turn, and input the curve length L, the transition curve length L S , the curve deflection angle α, and the radius R parameter of the circular curve.

3. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 2, characterized in that, The calculation method of the axis line elements is as follows: Length L of circular curve R =L - 2L S ; Central angle α of circular curve R =L R ×180° / πR; The number of segments in the circular curve H R = L R / W, where W is the segment ring width; Average turning angle θ of circular curve R = α R / H R ; Number of transition curve loops H S =L S / W; Transition curve angle α S =(α - α R ) / 2; Average deflection angle θ of transition curve S = α S / H S .

4. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 2, characterized in that When the starting mileage or the ending mileage of the interval is located within the transition curve section or the circular curve section, separately record the length L of the transition curve or the circular curve within the interval mileage range of this section S ’ or L R ’; According to L S ’s proportion of L S or the proportion of L R ’s proportion of L R , the corresponding α S ’ and α R ’ are obtained.

5. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 1, wherein In S2, the calculation formulas for the rotation angles βright turn and βleft turn of the single-point segments of the left and right turning rings are as shown in the following formulas (1) and (2). The average rotation angle β of the segments can be obtained by calculating the weighted average according to the common segment positions statistically; In the formula, s is the segment taper, m is the segment position, n is the total number of segment positions, and d is the outer diameter of the segment.

6. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 1, characterized in that, In S3, the segment arrangement plan includes: The segment ring number Num, length L, total number of segment rings H, and number of standard rings H of this section of the line B , number of left-turn rings H Z and number of right-turn rings H Y ; Arrange the segment arrangement plans of each axis section in sequence from top to bottom according to the sequence of mileage until the ending mileage of the section, and finally obtain the total segment arrangement plan of the section.

7. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 1, characterized in that, In S5, the total segment plan of the section includes the total number of rings, standard ring number, left turning ring number, right turning ring number of type I segments, the total number of rings, standard ring number, left turning ring number, right turning ring number of type II segments, as well as the total number of standard rings, type I ring number, type II ring number, type III ring number, the total number of left turning rings, type I ring number, type II ring number, type III ring number, and the total number of segment rings of the entire section, and finally output the detailed segment arrangement plan of the above section and the table of the total segment plan of the section.

8. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 1, wherein It also includes S6: Input two parameters of the initial monthly ring number and the planned monthly ring number, and search for the initial ring number H at the beginning of the month in the detailed interval segment total arrangement plan table C in the axis segment where it is located and the end-of-month ring number H M of the axis segment 9. The shield segment layout method for automatically calculating and generating standard rings and turning rings according to claim 8, characterized in that The specific method of S6 is as follows: Assume that the number of a certain section of axis is i. If the sum of the total number of loops of all axes before the i-th axis, H1 + H2 + … + H i-1 <H C , and the sum of the total number of loops of the i-th axis and all axes before it, H1 + H2 + … + H i-1 +H i >H C , then the loop number at the beginning of the month, H C is within the i-th axis. Using the same method, the j-th axis containing the loop number H M at the end of the month can be found; Divide the above two sections of axes into two equal parts according to the number of rings at the beginning of the month and the number of rings at the end of the month, and recalculate the segment arrangement plan for the 4 segments of axes split out according to the method of S4. Delete the segment arrangement plans for all axis segments before and after the ring numbers at the beginning and end of the month to obtain the monthly segment arrangement plan required currently; According to the method of S5, obtain the total monthly segment schedule, and automatically output the tables of the monthly segment arrangement plan and the total monthly segment plan; The daily segment plan can be calculated and generated by the same method.

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