Method for connecting a lower structure to a segment

Abstract

The application relates to a method for connecting a lower structure and a pipe piece, belonging to the field of shield tunnels, and the method comprises the following steps: obtaining a final included angle alpha according to an included angle alpha1 and an included angle alpha2 between adjacent connecting bolt hole groups on the pipe piece, and confirming an included angle mu between two adjacent connecting bolt holes in a single connecting bolt hole group; the application realizes the connection between the pipe piece and the internal structure by using newly-added bolt holes or reconstructed existing holes on the pipe piece, the pipe piece is connected with the lower structure by being connected with the connecting bolt holes through bolts and matched connecting bolt holes, the stability of the lower structure during the construction period and the operation period is enhanced by arranging the connecting device between the lower structure and the pipe piece, and meanwhile, the lower structure installation under the centering condition of the internal structure and the pipe piece can be adapted.

Description

Technical Field

[0001] This application relates to the field of shield tunnel technology, and in particular to a method for connecting the substructure and the tunnel lining segments. Background Technology

[0002] Currently, the connection of the substructure of shield tunnels generally adopts a technical solution of setting longitudinal bolt connections between adjacent substructures, without any connection between the substructure and the tunnel segments. The existing technology has the following main technical defects:

[0003] Only connecting bolts are installed between adjacent substructures, and no connecting device is installed between the substructure and the segments. When assembling with existing technology, since there is no connection between the internal structure and the segments, the internal structure mainly relies on the friction between itself and the segments to maintain its positional balance during the construction period. During the construction period, under the influence of segments transport vehicles, internal structural tooling machinery, etc., the substructure is prone to displacement, and in extreme cases, it may even lead to instability of the substructure.

[0004] Furthermore, the existing substructure connection method cannot meet the high-precision alignment requirements of the tunnel segments. High-precision alignment of the substructure and the tunnel segments means that the center plane of the substructure and the center plane of the tunnel segments are kept highly aligned. This can reduce the risk of the substructure straddling the tunnel segment seam from the source. Under the requirement of high-precision alignment between the substructure and the tunnel segments, the joint shape of adjacent substructures is significantly affected by the staggered rotation assembly of the tunnel segments. The staggered rotation assembly of the tunnel segments has a variety of assembly points, which will lead to a variety of joint shapes in the substructure. The longitudinal connection between adjacent substructures can only adapt to a single joint shape or a near-single joint shape, and it is difficult to adapt to a variety of joint shapes. Summary of the Invention

[0005] This application provides a method for connecting a substructure and a segment to solve the problems in the prior art where the segments and internal structure are not connected during assembly, the internal structure is prone to misalignment, and in extreme cases, the substructure may even become unstable. Furthermore, the method is not suitable for adapting to various joint shapes when the substructure and segments are aligned.

[0006] The first aspect of this application provides a method for connecting a substructure to a segment, including the following steps:

[0007] Step 1: Make connecting bolt holes on the segments and the substructure respectively, and form a connecting bolt hole group by making two connecting bolt holes as a group;

[0008] Step 2: Set several sets of connecting bolt holes on the segment, with the center of the connecting bolt hole set as the reference, and set them at the center of the longitudinal connection of the segment or at the equidistant points between the longitudinal connections of two segments.

[0009] Step 3, setting the lower structure on the segment, presetting the bolts that can make the segment and the lower structure fit, making the intersection of the length direction of the two adjacent bolts to get the included angle a1 between the two bolts;

[0010] Step 4, presetting the minimum angle θ that makes a segment rotate relative to the last segment to meet the requirements of the segment rotation assembly, dividing the minimum angle θ into N positive integers, and taking one of them as the included angle a2 between the adjacent connecting bolt hole groups;

[0011] Step 5, confirming the minimum angle θ that can make the included angle a2 closest to the included angle a1 by the included angle division number N0;

[0012] Step 6, dividing the included angle θ by the included angle division number N0 determined in step 5, and one of them is the final included angle a between the adjacent connecting bolt hole groups;

[0013] Step 7, confirming the included angle μ between the two adjacent connecting bolt holes in a single connecting bolt hole group by the absolute value of the difference between the included angle a1 in step 3 and the final included angle a in step 6;

[0014] Step 8, arranging the two connecting bolt holes in a connecting bolt hole group with an included angle μ, and arranging the two adjacent connecting bolt hole groups with an included angle a.

[0015] In some embodiments, the specific process of setting the lower structure on the segment, presetting the bolts that can make the segment and the lower structure fit, and making the intersection of the length direction of the two adjacent bolts to get the included angle a1 between the two bolts is as follows:

[0016] Step 301, presetting the bolts that can make the segment and the lower structure fit, and the net distance between the adjacent bolts is L;

[0017] Step 302, making the two adjacent bolts fit along the length direction to the center of the circle to form an intersection point to form an included angle a1;

[0018] Step 303, confirming the degree of the included angle a1 by the inner diameter DN of the segment and the net distance L between the adjacent bolts.

[0019] In some embodiments, the specific process of confirming the included angle μ between the two adjacent connecting bolt holes in a single connecting bolt hole group by the absolute value of the difference between the included angle a1 in step 3 and the final included angle a in step 6 is as follows:

[0020] Step 701, presetting the safe net distance e1 of the connecting bolt hole to the edge of the structure in the segment, and presetting the safe net distance e2 between the two adjacent connecting bolt holes in the two adjacent bolt hole groups;

[0021] Step 702, when the center of the bolt hole group is located at the joint between the adjacent two pipe pieces, the minimum value μmin and the maximum value μmax of the included angle between the adjacent two bolt holes in the single bolt hole group are calculated respectively by using the safe distance e1, the safe distance e2 and the inner diameter DN of the pipe piece in step 701;

[0022] Step 703, when the center of the bolt hole group is not located at the joint between the adjacent two pipe pieces, the maximum values μmax1 and μmax2 of the included angle between the adjacent two bolt holes in the single bolt hole group are calculated by using the included angle α in step 6 and the safe distance e1, the safe distance e2 and the inner diameter DN of the pipe piece in step 701;

[0023] Step 704, the final μ value in step 702 is confirmed, and the final μ value in step 703 is confirmed.

[0024] In some embodiments, the specific process of confirming the final μ value in step 702 is as follows:

[0025] Step 7021, when the absolute value of the difference between α1 and α2 is greater than μmin, and the absolute value of the difference between α1 and α2 is less than μmax, μ is equal to the absolute value of the difference between α1 and α2;

[0026] Step 7022, when the absolute value of the difference between α1 and α2 is not greater than μmin, μ is equal to μmin;

[0027] Step 7023, when the absolute value of the difference between α1 and α2 is not less than μmax, μ is equal to μmax.

[0028] In some embodiments, the specific process of confirming the final μ value in step 703 is as follows:

[0029] Step 7031, the final μmax is selected by comparing μmax1 and μmax2;

[0030] Step 7032, when the absolute value of the difference between α1 and α2 is less than μmax, μ is equal to the absolute value of the difference between α1 and α2;

[0031] Step 7033, when the absolute value of the difference between α1 and α2 is not less than μmax, μ is equal to μmax.

[0032] In some embodiments, the specific process of selecting the final μmax by comparing μmax1 and μmax2 is as follows:

[0033] Step 70311, when μmax1 is less than μmax2, μmax is μmax1, and when μmax1 is greater than μmax2, μmax is μmax2.

[0034] The second aspect of the embodiment of the present application provides a connecting method of the lower structure and the segment, comprising the following steps:

[0035] The assembling positioning hole on the segment is connected with the lower structure through the first connecting mechanism;

[0036] The grouting hole on the segment is connected with the lower structure through the second connecting mechanism.

[0037] In some embodiments, the connecting tenon comprises a screw rod, a tenon head arranged at one end of the screw rod close to the segment and connected with the assembling positioning hole, and a nut arranged at the other end of the screw rod away from the tenon head.

[0038] In some embodiments, the first connecting mechanism comprises a connecting head prearranged in the assembling positioning hole of the segment, a long hole arranged on the lower structure, and a first screw rod capable of being connected with the connecting head through the long hole.

[0039] Supporting rods are arranged between the two sides of the lower structure and the segment, for transversely limiting the segment.

[0040] In some embodiments, the second connecting mechanism comprises a screw hole arranged on the lower structure, a threaded pipe arranged in the grouting hole, and a second screw rod capable of being connected with the threaded pipe through the screw hole.

[0041] The technical scheme provided by the present application has the following beneficial effects:

[0042] By arranging the connecting screw hole groups in the segment and the lower structure in a specific arrangement mode, the lower structure can be stably connected with the segment when the segment is rotated and assembled in a staggered manner, avoiding the problem that the segment and the lower structure are not connected during assembly, the internal structure is prone to dislocation, and in extreme cases, the lower structure is even unstable, and the internal structure and the segment are not easy to adapt to various joint forms.

[0043] The existing hole on the segment is used as the connecting hole, which avoids the need to open a new hole and calculate the angle, reduces the damage to the segment, reduces the cost, improves the construction efficiency, and improves the efficiency of the segment connection. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0045] Figure 1 The structural schematic diagram provided by the embodiment of the present application;

[0046] Figure 2 The structural schematic diagram provided for step 4 in the embodiment of the present application;

[0047] Figure 3 The first structural schematic diagram provided for step 7 in the embodiment of the present application;

[0048] Figure 4 The second structural schematic diagram provided for step 7 in the embodiment of the present application;

[0049] Figure 5 The third structural schematic diagram provided for step 7 in the embodiment of the present application;

[0050] Figure 6 The fourth structural schematic diagram provided for step 7 in the embodiment of the present application;

[0051] Figure 7 The assembling schematic diagram provided for the use of the grouting hole in the embodiment of the present application;

[0052] Figure 8 The first assembling schematic diagram provided for the use of the assembling positioning hole in the embodiment of the present application;

[0053] Figure 9 The second assembling schematic diagram provided for the use of the assembling positioning hole in the embodiment of the present application;

[0054] Figure 10 The first structural schematic diagram provided for the connecting tenon in the embodiment of the present application;

[0055] Figure 11 The second structural schematic diagram provided for the connecting tenon in the embodiment of the present application.

[0056] 1, lower structure; 2, segment; 3, connecting tenon; 31, tenon head; 32, screw rod; 33, nut; 4, threaded sleeve; 5, bolt hole; 51, connecting bolt hole group; 52, connecting bolt hole; 6, threaded pipe; 7, second bolt; 8, connecting head; 9, long hole; 10, first bolt; 11, support rod; 12, assembling positioning hole; 13, grouting hole. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0058] The embodiment of the present application provides a connecting method of a lower structure and a segment, which can solve the problems that the segment and the internal structure are not connected in the prior art, the internal structure is prone to dislocation, and the lower structure is unstable in the extreme case, and the lower structure and the segment are not easy to adapt to various joint forms.

[0059] Referring to Figures 1 to 6 The first aspect of the embodiment of the present application provides a connecting method of a lower structure and a segment, which comprises the following steps.

[0060] Step 1, connecting bolt holes 52 are respectively formed on the segment 2 and the lower structure 1, and two connecting bolt holes 52 form a connecting bolt hole group 51.

[0061] Step 2, a plurality of connecting bolt hole groups 51 are arranged on the segment 2, and the centers of the connecting bolt hole groups 51 are arranged at the longitudinal connection centers of the segment or the equidivision points between the adjacent longitudinal connection centers of the segment.

[0062] Since the longitudinal connection centers of the segment and the equidivision points between the adjacent longitudinal connection centers are uniformly distributed on the segment 2, arranging the centers of the connecting bolt hole groups 51 at the longitudinal connection centers of the segment or the equidivision points between the adjacent longitudinal connection centers can ensure that the connecting bolt hole groups 51 are uniformly distributed on the segment 2, and the connecting bolt hole groups 51 are matched with the distribution of the connecting holes of the segment 2, and the problem that a plurality of segment block standard molds need to be newly arranged due to the newly arranged bolt holes on the segment 2 is avoided.

[0063] Step 3, the lower structure 1 is arranged on the segment 2, the net distance L between the bolt and the adjacent bolt which can make the segment 2 and the lower structure 1 fit is preset, and the included angle α1 between the two adjacent bolts is obtained by extending the two adjacent bolts along the length direction of the two adjacent bolts.

[0064] That is, the formula α1 = 360° / N. .

[0065] Step 4, under the condition of meeting the rotation assembly requirement of the segment 2, the minimum angle θ of rotation of a ring segment 2 relative to the last ring segment 2 is preset, the minimum angle θ is divided into N equal parts, and one part is taken as the included angle α2 between the adjacent connecting bolt hole groups 51.

[0066] That is, the formula α2 = 360° / N. .

[0067] Wherein the minimum angle of rotation of the segmental pipe 2 can be defined as the longitudinal connection unit angle, the longitudinal connections on the segmental pipe 2 are evenly distributed on the whole ring pipe, and one of the segmental pipes 2 rotates a certain angle relative to the previous ring pipe 2 to meet the requirements of the line layout. The angle of rotation of the segmental pipe 2 must ensure that the longitudinal connections of the segmental pipe 2 can match the longitudinal connections of the previous ring pipe 2 after rotation, so the angle of rotation of the segmental pipe 2 is always a multiple of the longitudinal connection unit angle. Here, the angle between the adjacent bolt hole groups 51 is evenly divided into several parts, one of which can ensure that the angle of rotation of the segmental pipe 2 during construction and assembly is also a multiple of the angle between the adjacent bolt hole groups. In this way, under different rotation and assembly angles of the segmental pipe 2, the bolt holes 52 provided on the segmental pipe 2 can always be fixed at the positions of the bolt holes 51 provided on the substructure 1.

[0068] Step 5: Confirm the number N0 of angle divisions that can make the minimum angle θ closest to the angle α1.

[0069] Step 6: Divide the angle θ by the number N0 of angle divisions confirmed in step 5, and take one part as the degree of the angle α2 between the adjacent bolt hole groups 51, which is the final angle α between the adjacent bolt hole groups 51.

[0070] That is, the formula .

[0071] Step 7: Confirm the angle μ between the two adjacent bolt holes 52 in a single bolt hole group 51 through the absolute value of the difference between the angle α1 in step 3 and the final angle α in step 6.

[0072] Step 8: Arrange the two bolt holes 52 in a bolt hole group 51 at an angle μ, and arrange two adjacent bolt hole groups 51 at an angle α.

[0073] Wherein the number of bolt holes 52 in each bolt hole group 51 is one or two. When the angle α1 in step 3 is equal to the final angle α in step 6, the number of bolt holes 52 in each bolt hole group 51 is one, and otherwise the number of bolt holes 52 is two.

[0074] In some optional embodiments, referring to FIG. 5, the method for connecting the substructure and the segmental pipe comprises the following steps: Figures 1 to 2

[0075] ​Step 301: Preset the bolts that can be used to assemble the segment 2 and the lower structure 1, as well as the clear distance L between adjacent bolts;

[0076] Step 302: Extend the two adjacent bolts of the assembly fit along their length to the center of the circle to form an included angle α1;

[0077] Step 303: Determine the degree of the included angle α1 by using the net distance L between the inner diameter DN of the pipe segment 2 and the adjacent bolt.

[0078] Where L is a preset known value obtained during the design process through engineering experience or conventional stress calculations.

[0079] The distance between two adjacent bolts As the bottom edge, the distance from the bolt hole 52 to the center of the circle. Since the hypotenuse is the base, the included angle α1 between two adjacent bolts can be calculated based on trigonometric relationships. This included angle ensures the connection effect between the lower structure 1 and the segment 2.

[0080] This can be expressed by the formula α1 = 2arcsin .

[0081] In some alternative embodiments, see Figures 1 to 6 As shown, in the method of connecting the lower structure to the segment, the specific process of determining the included angle μ between two adjacent connecting bolt holes 52 in a single connecting bolt hole group 51 by using the absolute value of the difference between the included angle α1 in step 3 and the final included angle α in step 6 is as follows:

[0082] Step 701: Preset the safety clearance e1 from the connecting bolt hole 52 to the structural edge inside the segment 2, and preset the safety clearance e2 between two adjacent connecting bolt holes 52 in two adjacent bolt hole groups 51.

[0083] The safety clearances e1 and e2 are values ​​preset based on engineering experience during the design phase, and are known values.

[0084] Step 702: When the center of the connecting bolt hole group 51 is located at the joint of the segment 2, use the safety clearance e1, safety clearance e2 and the inner diameter DN of the segment 2 in step 701 to calculate the minimum value μmin and the maximum value μmax of the included angle between two adjacent connecting bolt holes 52 in a single connecting bolt hole group 51.

[0085] When the center of the connecting bolt hole group 51 is located at the joint of the segment 2, if the included angle between the two connecting bolt holes 52 in the connecting bolt hole group 51 is too small, the connecting bolt hole 52 will be too close to the structural edge of the segment 2, exceeding the safety clearance e1 requirement between the connecting bolt hole 52 and the structural edge of the segment 2, resulting in the connecting bolt hole 52 being unable to be opened. On the other hand, if the included angle between the two connecting bolt holes 52 is too large, the distance between the connecting bolt hole 52 and the bolts in the adjacent bolt hole group 51 will be too small, exceeding the safety clearance e2 requirement between bolt holes, resulting in the connecting bolt hole 52 being unable to be opened. Therefore, it is necessary to obtain the minimum value μmin and the maximum value μmax.

[0086] That is, the formula and formula .

[0087] Step 703: When the center of all connecting bolt hole groups 51 is not located at the joint between two adjacent pipe segments 2, the maximum values ​​of the included angles μmax1 and μmax2 between two adjacent connecting bolt holes 52 in a single connecting bolt hole group 51 are calculated using the included angle α in step 6, the safety clearance e1 and safety clearance e2 in step 701, and the inner diameter DN of the pipe segment 2.

[0088] When the center of the connecting bolt hole group 51 is not located at the joint between two adjacent segments 2, the included angle between the two connecting bolt holes 52 in the connecting bolt hole group 51 is too large. On the one hand, this will cause the net distance between the connecting bolt hole 52 and the connecting bolt hole 52 in the adjacent connecting bolt hole group 51 to be too small, exceeding the safety net distance e2 requirement between adjacent connecting bolt holes 52. On the other hand, it will also cause the net distance between the connecting bolt hole 52 and the structural edge of the segment 2 to be too small, exceeding the safety net distance e1 requirement between the connecting bolt hole 52 and the structural edge. Therefore, it is necessary to select an appropriate μmax.

[0089] That is, the formula and formula .

[0090] Step 704: Confirm the final μ value of step 702, and confirm the final μ value of step 703.

[0091] In some alternative embodiments, see Figures 1 to 6 As shown, in the connection method between the lower structure and the segment, the specific process for confirming the final μ value in step 702 is as follows:

[0092] Step 7021: When the absolute value of the difference between α1 and α2 is greater than μmin, and the absolute value of the difference between α1 and α2 is less than μmax, μ is equal to the absolute value of the difference between α1 and α2.

[0093] α1 is the included angle between two connecting bolts, which is determined considering the connection effect between the lower structure 1 and the segment 2. α2 is the included angle between two sets of connecting bolt hole groups 51, which is determined considering the stability of the connecting bolt position under various rotation and assembly angles of the segment 2. The included angle μ between adjacent bolts in a single connecting bolt hole group 51 is taken as the absolute value of the difference between the above two, which can simultaneously meet the two requirements of ensuring the bolt connection effect and the stability of the connecting bolt hole 52 position.

[0094] Step 7022: When the absolute value of the difference between α1 and α2 is not greater than μmin, μ equals μmin;

[0095] Step 7023: When the absolute value of the difference between α1 and α2 is not less than μmax, μ equals μmax.

[0096] When the value of μmin is not greater than the absolute value of the difference between α1 and α, μmax is not less than the absolute value of the difference between α1 and α. At this time, the safety clearance requirement for the arrangement of the connecting bolt holes 52 is met. Therefore, the value of μ can be the absolute value of the difference between α1 and α.

[0097] When the value of μmin is greater than the absolute value of the difference between α1 and α, the net distance between the connecting bolt hole 52 and the structural edge of the segment 2 is less than the safe net distance e1, so the value of μ at this time is μmin.

[0098] When the value of μmax is not greater than the absolute value of the difference between α1 and α, the net distance between the connecting bolt hole 52 and the connecting bolt hole 52 in the adjacent bolt hole group 51 is less than the safe net distance e2, so the value of μ at this time is μmax.

[0099] That is, the formula , ,but ;

[0100] when ,but .

[0101] ,but .

[0102] In some alternative embodiments, see Figures 1 to 6 As shown, in the connection method between the lower structure and the segment, the specific process for confirming the final μ value in step 703 is as follows:

[0103] Step 7031: Select the final μmax by comparing μmax1 and μmax2;

[0104] Step 7032: When the absolute value of the difference between α1 and α2 is less than μmax, μ is equal to the absolute value of the difference between α1 and α2.

[0105] Step 7033: When the absolute value of the difference between α1 and α2 is not less than μmax, μ equals μmax.

[0106] When the absolute value of the difference between α1 and α2 is less than μmax, the arrangement of the connecting bolt holes 52 satisfies the safety clearance e1 requirement with the structural edge of the segment 2 and the safety clearance e2 requirement with the connecting bolt holes 52 in the adjacent bolt hole group 51. Therefore, the value of μ can be the absolute value of the difference between α1 and α2.

[0107] When the absolute value of the difference between α1 and α2 is not less than μmax, the arrangement of the connecting bolt holes 52 does not meet the safety clearance requirements of the arrangement of the connecting bolt holes 52, and the value of μ at this time is μmax.

[0108] That is, the formula: when ,but ,when ,but .

[0109] In some alternative embodiments, see Figures 1-6 As shown, in the connection method between the lower structure and the segment, the specific process of selecting the final μmax when μmax1 is less than μmax2 is as follows:

[0110] Step 70311: When μmax1 is less than μmax2, then μmax is μmax1; when μmax1 is greater than μmax2, then μmax is μmax2.

[0111] That is, the formula if but ;like ,but .

[0112] The working principle and process of this application:

[0113] A number of connecting bolt hole groups 51 are set on the tube segment 2. Taking the center of the connecting bolt hole group 51 as the reference, they are respectively set at the longitudinal connection center of the tube segment or at the equidistant points between the longitudinal connections of two tube segments. The lower structure 1 is set on the tube segment 2. The bolts that can be matched with the tube segment 2 and the lower structure 1 and the spacing L between adjacent bolts are preset so that the two adjacent bolts are extended along their length direction and intersected to obtain the included angle α1 between the two bolts.

[0114] Under the condition of meeting the rotation assembly requirements of segment 2, the minimum angle θ that makes one ring segment 2 rotate relative to the previous ring segment 2 is preset. The angle θ is divided into N equal parts, and one of them is taken as the included angle α2 between adjacent connecting bolt hole groups 51. The number of equal parts of the included angle N0 that makes α2 closest to α1 is determined. The angle θ is divided into N0 equal parts, and one of them is taken as the final included angle α between adjacent connecting bolt hole groups 51.

[0115] The angle μ between the two adjacent connecting bolt holes 52 in the single connecting bolt hole group 51 is confirmed by the absolute value of the difference between the included angle α1 and the final included angle α in step 6, and the two connecting bolt holes 52 in the connecting bolt hole group 51 are arranged at the angle μ, and the two adjacent connecting bolt hole groups 51 are arranged at the angle α.

[0116] Referring to Figure 7 The second aspect of the embodiment of the application provides a connecting method of the lower structure and the segment, and the method comprises the following steps:

[0117] Step 1, connecting the assembling positioning hole 12 on the segment 2 and the lower structure 1 by the first connecting mechanism;

[0118] Step 2, connecting the grouting hole 13 on the segment 2 and the lower structure 1 by the second connecting mechanism.

[0119] In some optional embodiments, referring to Figures 9 to 11 The first connecting mechanism comprises the bolt hole 5 opened on the lower structure 1, the connecting tenon 3 and the threaded sleeve 4 pre-buried in the bolt hole 5 of the lower structure 1.

[0120] The connecting tenon 3 comprises the screw rod 32, the tenon head 31 arranged on the screw rod 32 close to the segment 2 and connected with the assembling positioning hole 12, and the nut 33 arranged on the screw rod 32 away from the tenon head 31.

[0121] When the assembling positioning hole 12 is used as the connecting hole, the first connecting mechanism adopts the connecting tenon 3 and the threaded sleeve 4, the threaded sleeve 4 is pre-buried in the bolt hole 5 when the lower structure 1 is prefabricated, the connecting tenon 3 is screwed into the threaded sleeve 4 through the screw rod 32, the tenon head 31 is located on the side of the lower structure 1 facing the segment 2, the nut 33 is screwed on the side of the connecting tenon 3 away from the tenon head 31, the connecting tenon 3 on the lower structure 1 is aligned with the assembling positioning hole 12 on the segment 2, then the lower structure 1 is placed on the segment 2, and the connecting tenon 3 is inserted into the assembling positioning hole 12, so that the lower structure 1 and the segment 2 are connected and fixed.

[0122] In some optional embodiments, referring to Figure 8 The first connecting mechanism comprises the connecting head 8 screwed in the assembling positioning hole 12 of the segment 2, the long hole 9 opened on the lower structure 1, and the first bolt 10 capable of connecting the connecting head 8 through the long hole 9.

[0123] The support rod 11 is arranged between the two sides of the lower structure 1 and the segment 2 to avoid the transverse displacement on the segment 2.

[0124] When the assembling positioning hole 12 is used as a connecting hole, the first connecting mechanism can also adopt the connecting head 8, the first bolt 10, the long hole 9 opened on the lower structure 1, the threaded sleeve 4 pre-buried at the assembling positioning hole 12 when the segment 2 is prefabricated, the threaded hole matched with the first bolt 10 opened at the end of the connecting head 8 facing the lower structure 1, and the thread matched with the threaded sleeve 4 pre-buried at the assembling positioning hole 12 of the segment 2 opened at the end of the connecting head 8 facing the segment 2. Before positioning and installing the lower structure 1, the connecting head 8 is first connected with the threaded sleeve 4 pre-buried at the assembling positioning hole 12 of the segment 2 through the thread at the end of the connecting head 8, then the lower structure 1 is positioned and placed on the segment 2 according to the principle of segment alignment, the first bolt 10 is inserted into the long hole 9 and screwed into the threaded hole of the connecting head 8, and the first bolt 10 can change the insertion angle through the long hole 9 to avoid the inconvenience of high-precision alignment of the hole position after the lower structure 1 is placed on the segment 2. The range of the insertion angle of the first bolt 10 can be increased through the long hole 9, so that the connection between the first bolt 10 and the connecting head 8 is more suitable.

[0125] After the lower structure 1 and the segment 2 are connected by the first bolt 10, because the length of the long hole 9 is long, the first bolt 10 is not constrained in the length direction of the long hole 9, which causes the lower structure 1 to displace in the length direction of the long hole. Because the diameter of the first bolt 10 is matched with the width of the long hole 9, the first bolt 10 will not displace in the width direction of the long hole 9, that is, the lower structure 1 will not displace in the width direction of the long hole 9.

[0126] In order to avoid the displacement of the lower structure 1 in the length direction of the long hole 9, a support rod 11 is connected between the two sides of the lower structure 1 in the length direction of the long hole 9 and the segment 2, so as to limit the displacement of the lower structure 1.

[0127] In some optional embodiments, referring to Figure 7 The connecting method of the lower structure and the segment is shown in the figure, the second connecting mechanism includes the bolt hole 5 opened on the lower structure 1, the threaded pipe 6 arranged in the grouting hole 13, and the second bolt 7 passing through the bolt hole 5 and connected with the threaded pipe 6.

[0128] When the grouting hole 13 is used as a connecting hole, the second connecting mechanism adopts the threaded pipe 6 and the second bolt 7, the threaded pipe 6 is pre-buried in the grouting hole 13 when the segment 2 is prefabricated, then the lower structure 1 is placed on the segment 2, the bolt hole 5 opened on the lower structure 1 is aligned with the grouting hole 13, then the second bolt 7 is screwed from the bolt hole 5 of the lower structure 1 until it is screwed into the threaded pipe 6 in the segment 2, so as to connect the segment 2 and the lower structure 1.

[0129] The working principle and process of the present application:

[0130] When the assembling positioning hole 12 is used as the connecting hole, the first connecting mechanism adopts the connecting tenon 3 and the threaded sleeve 4, the threaded sleeve 4 is pre-buried in the bolt hole 5 when the lower structure 1 is prefabricated, the connecting tenon 3 is screwed into the threaded sleeve 4 through the screw rod 32, the tenon head 31 is located on the side of the lower structure 1 facing the pipe piece 2, the nut 33 is screwed on the side of the connecting tenon 3 away from the tenon head 31, the connecting tenon 3 on the lower structure 1 is aligned with the assembling positioning hole 12 on the pipe piece 2, then the lower structure 1 is placed on the pipe piece 2, and the connecting tenon 3 is inserted into the assembling positioning hole 12, so that the lower structure 1 is connected and fixed with the pipe piece 2.

[0131] When the assembling positioning hole 12 is used as the connecting hole, the first connecting mechanism can also adopt the connecting head 8, the first bolt 10, the long hole 9 formed on the lower structure 1, the threaded sleeve 4 matched with the connecting head 8 pre-buried at the assembling positioning hole 12 when the pipe piece 2 is prefabricated, the threaded hole matched with the first bolt 10 formed on the end of the connecting head 8 facing the lower structure 1, and the threaded hole matched with the threaded sleeve 4 pre-buried at the assembling positioning hole 12 of the pipe piece 2 formed on the end of the connecting head 8 facing the pipe piece 2, before positioning and installing the lower structure 1, the connecting head 8 is connected with the threaded sleeve 4 pre-buried at the assembling positioning hole 12 of the pipe piece 2 through the threaded hole at the end of the connecting head 8, then the lower structure 1 is positioned and placed on the pipe piece 2 according to the principle of pipe piece alignment, the first bolt 10 is inserted into the long hole 9 and screwed into the threaded hole of the connecting head 8, and the first bolt 10 can change the insertion angle through the long hole 9, so as to avoid the inconvenience of high-precision alignment of the hole position after the lower structure 1 is placed on the pipe piece 2, the range of the insertion angle of the first bolt 10 is increased through the long hole 9, and the connection between the first bolt 10 and the connecting head 8 is more matched.

[0132] After the lower structure 1 is connected with the pipe piece 2 through the first bolt 10, because the length of the long hole 9 is long, there is a gap in the length direction of the long hole 9, which causes the displacement of the lower structure 1, because the diameter of the first bolt 10 is matched with the width of the long hole 9, the first bolt 10 will not displace in the width direction of the long hole 9, that is, the lower structure 1 will not displace in the width direction of the long hole 9.

[0133] In order to avoid the displacement of the lower structure 1 in the length direction of the long hole 9, the connecting support rod 11 is connected between the two sides of the lower structure 1 in the length direction of the long hole 9 and the pipe piece 2, so as to limit the displacement of the lower structure 1.

[0134] When the grouting hole 13 is used as the connecting hole, the second connecting mechanism adopts the threaded pipe 6 and the second bolt 7. The threaded pipe 6 is pre-buried in the grouting hole 13 when the segment 2 is prefabricated. Then the lower structure 1 is placed on the segment 2, the bolt hole 5 opened on the lower structure 1 is aligned with the grouting hole 13, and then the second bolt 7 is screwed from the bolt hole 5 of the lower structure 1 into the threaded pipe 6 in the segment 2, so as to connect the segment 2 and the lower structure 1.

[0135] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0136] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0137] The above description is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A method of connecting a lower structure to a segment, characterized by, Comprise: Step 1, the connecting bolt hole (52) is respectively set on the segment (2) and the lower structure (1), and two connecting bolt hole (52) are taken as a group to form the connecting bolt hole group (51); Step 2, a plurality of connecting bolt hole groups (51) are provided on the segment (2), and the center of the connecting bolt hole group (51) is taken as a reference, and the plurality of connecting bolt hole groups (51) are respectively arranged at the center of the segment arc direction or the two segment connecting positions; Step 3, the lower structure (1) is arranged on the segment (2), the bolt that can be matched with the segment (2) and the lower structure (1) is preset, and the included angle α1 between the two adjacent bolts in different bolt hole groups is obtained by extending the two adjacent bolts along the length direction and intersecting; Step 4, under the condition that the rotation assembly requirement of the segment (2) is met, the minimum angle θ of the rotation of one ring segment (2) relative to the last ring segment (2) is preset, the minimum angle θ is divided into N positive integers, and one of the parts is the included angle α2 between the adjacent connecting bolt hole groups (51); Step 5, the included angle division quantity N0 of the minimum angle θ that can make the included angle α2 closest to the included angle α1 is confirmed; Step 6, the minimum angle θ is divided by the included angle division quantity N0 determined in step 5, and one of the parts is the final included angle α between the adjacent connecting bolt hole groups (51); Step 7, the included angle μ between the two adjacent connecting bolt holes (52) in a single connecting bolt hole group (51) is confirmed by the absolute value of the difference between the included angle α1 in step 3 and the final included angle α in step 6; Step 8, the two connecting bolt holes (52) in the connecting bolt hole group (51) are arranged at the included angle μ, and the two adjacent connecting bolt hole groups (52) are arranged at the included angle α.

2. The connecting method of the lower structure and the segment according to claim 1, wherein: the specific process that the lower structure (1) is arranged on the segment (2), and the bolt that can be matched with the segment (2) and the lower structure (1) is preset, and the included angle α1 between the two adjacent bolts is obtained by extending the two adjacent bolts along the length direction and intersecting is as follows: Step 301, the bolt that can be matched with the segment (2) and the lower structure (1) is preset, and the clear distance between the adjacent bolts is L; Step 302, the two adjacent bolts matched and assembled are extended to the center of the circle along the length direction to form an intersection point at the center, so that the included angle α1 is formed; Step 303, the degree of the included angle α1 is confirmed by the inner diameter DN of the segment (2) and the clear distance L between the adjacent bolts.

3. The connecting method of the lower structure and the segment according to claim 1, wherein: the specific process that the included angle μ between the two adjacent connecting bolt holes (52) in a single connecting bolt hole group (51) is determined by the absolute value of the difference between the included angle α1 in step 3 and the final included angle α in step 6 is as follows: Step 701, the safe clear distance e1 of the connecting bolt hole (52) to the structural edge in the segment (2) is preset, and the safe clear distance e2 between the two adjacent connecting bolt holes (52) in the two adjacent bolt hole groups (51) is preset. ​ ​ Step 702, when the center of the connecting bolt hole group (51) is located at the joint between the adjacent two pipe pieces (2), the minimum value μmin and the maximum value μmax of the included angle between the adjacent two connecting bolt holes (52) in the single connecting bolt hole group (51) are calculated respectively by using the safe clearance e1, the safe clearance e2 and the inner diameter DN of the pipe piece (2) in step 701; Step 703, when the center of all the connecting bolt hole groups (51) is not located at the joint between the adjacent two pipe pieces (2), the maximum values μmax1 and μmax2 of the included angle between the adjacent two connecting bolt holes (52) in the single connecting bolt hole group (51) are calculated by using the included angle α in step 6 and the safe clearance e1, the safe clearance e2 and the inner diameter DN of the pipe piece (2) in step 701; Step 704, the final μ value in step 702 is confirmed, and the final μ value in step 703 is confirmed.

4. The method for connecting the lower structure and the pipe piece according to claim 3, wherein: The specific process for confirming the final μ value in step 702 is: Step 7021, when the absolute value of the difference between α1 and α is greater than μmin, and the absolute value of the difference between α1 and α is less than μmax, μ is equal to the absolute value of the difference between α1 and α; Step 7022, when the absolute value of the difference between α1 and α is not greater than μmin, μ is equal to μmin; Step 7023, when the absolute value of the difference between α1 and α is not less than μmax, μ is equal to μmax.

5. The method for connecting the lower structure and the pipe piece according to claim 3, wherein: The specific process for confirming the final μ value in step 703 is: Step 7031, the final μmax is selected by comparing μmax1 and μmax2; Step 7032, when the absolute value of the difference between α1 and α is less than μmax, μ is equal to the absolute value of the difference between α1 and α; Step 7033, when the absolute value of the difference between α1 and α is not less than μmax, μ is equal to μmax.

6. The method for connecting the lower structure and the pipe piece according to claim 5, wherein: The specific process for selecting the final μmax by comparing μmax1 and μmax2 is: Step 70311, when μmax1 is less than μmax2, μmax is μmax1, and when μmax1 is greater than μmax2, μmax is μmax2.

7. The method of connecting the lower structure to the segment of claim 1, wherein, including: The pipe piece (2) is connected with the lower structure (1) by the first connecting mechanism through the assembling positioning hole (12) on the pipe piece (2); The pipe piece (2) is connected with the lower structure (1) by the second connecting mechanism through the grouting hole (13) on the pipe piece (2).

8. The method for connecting the lower structure and the pipe piece according to claim 7, wherein: The first connecting mechanism comprises the bolt hole (5) provided on the lower structure (1), the connecting tenon (3) and the threaded sleeve (4) pre-buried in the bolt hole (5) of the lower structure (1); The connecting tenon (3) comprises the screw rod (32), the tenon head (31) provided on the screw rod (32) and close to the pipe piece (2) and connected with the assembling positioning hole (12), and the nut (33) provided on the screw rod (32) and away from the tenon head (31).

9. The method for connecting the lower structure and the segment as claimed in claim 7, wherein: the first connecting mechanism comprises a connecting head (8) pre-set in the segment (2) positioning hole (12), a long hole (9) opened on the lower structure (1), and a first bolt (10) capable of connecting the connecting head (8) through the long hole (9); and support rods (11) are arranged between the two sides of the lower structure (1) and the segment (2) for transversely limiting the segment (2).

10. The method for connecting the lower structure and the segment as claimed in claim 7, wherein: the second connecting mechanism comprises a bolt hole (5) opened on the lower structure (1), a threaded pipe (6) arranged in a grouting hole (13), and a second bolt (7) capable of connecting the threaded pipe (6) through the bolt hole (5). ​ ​ ​

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