A bolt connection matching method for large cross-section of super-long components

Abstract

The present invention provides a bolting matching method for super-long components with large cross-sections, and belongs to the technical field of bridge construction. The technical scheme is as follows: beam segment division, which divides the beam segment into two parts: a hollow box beam and a solid box beam; beam segment production, which produces a single beam segment; beam segment matching, which first arranges the matching frame, then adjusts the beam segment, performs the first beam segment matching, and then performs the return port matching and excess trimming work in sequence; performs the second beam segment matching, and performs matching drilling; performs the third beam segment matching. The beneficial effects of the present invention are as follows: the present invention adopts a temporary process partition and a code plate method when matching the ring mouth, which can effectively control the overall size of the matching port and the flatness of the end; adopts a portable milling machine, and the matching port has a high flatness; when matching the beam segments, a three-way jack is used to adjust the matching gap, and the matching accuracy is high; when welding the ring mouth corner weld, the welding shrinkage is pre-placed, which can effectively control the size of the ring mouth after welding.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a bolt connection matching method for super-long components with large cross-sections. Background Art

[0002] When traditionally matching long and large-section bolts, individual components are made separately, with welds and margins reserved for matching. This matching method has low matching accuracy, the gap between the rings cannot be controlled, and the misalignment of the ports is difficult to control within a small range; the flatness of the ports cannot be guaranteed, especially for thick plates, which require grinding, fire calibration, and pad adjustment when necessary. This leads to hidden dangers in construction quality, and the construction period will be affected and extended. Summary of the invention

[0003] The purpose of the present invention is to provide a bolt connection matching method for super-long components with large cross-sections. The technical solution adopted by the present invention is specifically as follows: comprising the steps of:

[0004] S1. Beam segment division: the beam segment is divided into two parts: hollow box beam and solid box beam;

[0005] S2, beam segment production, according to the divided beam segments, single beam segment production;

[0006] S3, beam segment matching, first arrange the matching frame, then adjust the beam segment, perform the first beam segment matching, and then carry out the ring matching and excess trimming work in sequence; perform the second beam segment matching and carry out matching drilling; perform the third beam segment matching, then install the supporting angle steel and the outer cover plate, and finally carry out the bolt protection cover plate test installation.

[0007] Preferably, the first beam segment matching is that the hollow box beam and the solid box beam are matched according to the horizontal reference line of the component;

[0008] The second beam segment matching is to match again according to the beam segment sample punching reference points, the sample punching reference points are located at both ends of the beam segment center position, and drilling and component bottom splicing plate trial assembly are performed;

[0009] The third beam segment matching is to repeat the process of the second beam segment matching. After the drilling is completed, all internal splicing plates are pre-placed inside the box before matching, the second matching state is restored, the overall trial assembly is carried out, the overall data of the beam segment is measured, and the fitting gap of the connecting plate is checked.

[0010] Preferably, S1 is specifically that the whole beam section is divided into two parts, one half is a hollow box beam, and the other half is a solid box beam, and the hollow box beam and the solid box beam are bolted together by matching the ring mouth, using inner and outer connecting plates, inner bolt protection sealing plates, and outer sealing plates;

[0011] The hollow box girder and the solid box girder each occupy half of the beam section;

[0012] The hollow box girder and solid box girder and the corresponding connecting plates are manufactured separately and matched as a whole after the beam sections are formed.

[0013] Preferably, the step S2 is specifically:

[0014] S201. Before forming the four sides of a single beam segment, a process partition needs to be added to the matching port to control the size of the matching port. The process partition is set at the end of the box opening to ensure the size of the box opening and prevent deformation at the box opening.

[0015] A temporary support assembly is provided at the joint of two beam sections. The temporary support assembly is a rectangular frame as a whole, including a transverse support and a longitudinal support, and reinforcing ribs are provided inside the temporary support assembly;

[0016] The temporary support components are prefabricated first, and the flatness of the temporary support components is controlled at 1mm / m, the overall thickness does not exceed 2mm, and the diagonal |L1-L2|≤3mm. In order to increase the overall rigidity of the process partition, it is necessary to add reinforcing ribs on the horizontal and vertical supports respectively. When the temporary support components are installed as a whole, the top, bottom, and web of the box mouth must be corrected, and the gap between the assembly of the support components must not exceed 2mm;

[0017] S202. When a single beam segment is manufactured, the self-made supporting angle steel for the end cover is not installed temporarily. When it is matched, the whole is marked and installed. In order to control the flatness of the outer cover, the self-made angle steel is manufactured with a reserved plate thickness of 5mm and is milled using a milling machine;

[0018] S203, the corner welds at the matching box opening are not welded temporarily, and the welds are welded after the overall misalignment of the box opening is adjusted to meet the requirements when the beam sections are matched;

[0019] S204. To ensure the matching gap, a cutting allowance of at least 50 mm shall be added to the matching port when a single beam segment is manufactured, and the overall marking and cutting allowance shall be trimmed after matching.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts a temporary process partition and a code plate method when matching the ring mouth, which can effectively control the overall size of the matching port and the flatness of the end; a portable milling machine is adopted, and the matching port has a high flatness; a three-way jack is used to adjust the matching gap when matching the beam sections, and the matching accuracy is high; the welding shrinkage amount is pre-released when welding the ring mouth corner weld, which can effectively control the size of the ring mouth after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0022] Figure 1 Schematic diagram of the whole beam structure according to an embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the hollow box girder structure of an embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of the solid-web box girder structure of an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of a temporary support assembly according to an embodiment of the present invention.

[0026] Figure 5 for Figure 4 AA cross-section diagram.

[0027] Figure 6 This is a schematic diagram of the welding and installation of the beam segment end according to an embodiment of the present invention.

[0028] Figure 7 Schematic diagram of the arrangement of the matching tire frame according to an embodiment of the present invention.

[0029] Figure 8 for Figure 7 BB cross-section diagram.

[0030] Fig. 9 Schematic diagram of the first matching process of an embodiment of the present invention.

[0031] Fig.10 This is a schematic diagram of the installation of a code plate according to an embodiment of the present invention.

[0032] Fig.11 for Fig.10 CC cross-section diagram.

[0033] Fig.12 Schematic diagram of sample punch marking points according to an embodiment of the present invention.

[0034] Fig.13 FIG. 1 is a schematic diagram of matching port marking according to an embodiment of the present invention.

[0035] Fig.14 The figure is a schematic diagram of the installation process of angle steel and cover plate according to an embodiment of the present invention.

[0036] Among them, the accompanying drawings are marked as: 1. Hollow box girder; 2. Solid box girder; 3. Place not to be installed temporarily; 4. Place not to be welded temporarily; 5. Layout of cylindrical frame for hollow box girder; 6. Layout of cylindrical frame for solid box girder; 7. Jack frame; 8. Stacking plate;. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0038] Example 1

[0039] See also Figure 1 and Figure 8 The present invention provides a technical solution comprising the steps of:

[0040] S1. Beam segment division: the beam segment is divided into two parts: hollow box beam 1 and solid box beam 2. The whole beam segment is divided into two parts, one half is hollow box beam 1, and the other half is solid box beam 2. The hollow box beam 1 and solid box beam 2 are connected by inner and outer connecting plates, inner bolt protection cover plates, and outer cover plates through matching rings. The overall size is 2500 (height) * 3500 (width) * 46663 (length), and the matching port size is 2190 (height) * 3200 (length);

[0041] The hollow box girder and the solid box girder each occupy half of the beam section;

[0042] The hollow-web box girder 1 and the solid-web box girder 2 and the corresponding connecting plates are manufactured separately and matched as a whole after the beam sections are formed.

[0043] S2, beam segment production, according to the divided beam segments, single beam segment production;

[0044] S201. Before forming the four sides of a single beam segment, a process partition needs to be added to the matching port to control the size of the matching port. The process partition is set at the end of the box opening to ensure the size of the box opening and prevent deformation at the box opening.

[0045] A temporary support assembly is provided at the joint of two beam sections. The temporary support assembly is a rectangular frame as a whole, including a transverse support and a longitudinal support, and reinforcing ribs are provided inside the temporary support assembly;

[0046] The temporary support components are prefabricated first, and the flatness of the temporary support components is controlled at 1mm / m, the overall thickness does not exceed 2mm, and the diagonal |L1-L2|≤3mm. In order to increase the overall rigidity of the process partition, it is necessary to add reinforcing ribs on the horizontal and vertical supports respectively. When the temporary support components are installed as a whole, the top, bottom, and web of the box mouth must be corrected, and the gap between the assembly of the support components must not exceed 2mm;

[0047] S202. When a single beam segment is manufactured, the self-made supporting angle steel for the end cover is not installed temporarily. When it is matched, the whole is marked and installed. In order to control the flatness of the outer cover, the self-made angle steel is manufactured with a reserved plate thickness of 5mm and is milled using a milling machine;

[0048] S203, the corner welds at the matching box opening are not welded temporarily, and the welds are welded after the overall misalignment of the box opening is adjusted to meet the requirements when the beam sections are matched;

[0049] S204. To ensure the matching gap, a cutting allowance of at least 50 mm shall be added to the matching port when a single beam segment is manufactured, and the overall marking and cutting allowance shall be trimmed after matching.

[0050] S3, beam segment matching, first arrange the matching frame, then adjust the beam segment, perform the first beam segment matching, and then carry out the ring matching and excess trimming work in sequence; perform the second beam segment matching and carry out matching drilling; perform the third beam segment matching, then install the supporting angle steel and the outer cover plate, and finally carry out the bolt protection cover plate test installation.

[0051] The first beam segment matching is that the hollow box beam 1 and the solid box beam 2 are matched according to the horizontal reference line of the components;

[0052] The second beam segment matching is to match again according to the beam segment sample punching reference points, the sample punching reference points are located at both ends of the beam segment center, and drilling and component bottom splicing plate trial installation are carried out;

[0053] The third beam segment matching is to repeat the process of the second beam segment matching. After the drilling is completed, all internal splicing plates will be pre-placed inside the box before matching, the second matching state will be restored, the overall trial assembly will be carried out, the overall data of the beam segment will be measured, and the fitting gap of the connecting plate will be checked.

[0054] The hollow-web box girder 1 and the solid-web box girder 2 and the corresponding connecting plates are manufactured separately and matched as a whole after the beam sections are formed.

[0055] Step S3 specifically includes:

[0056] S301, match the tire frame layout, draw the ground sample line according to the vertical and horizontal reference lines of the component, control the error within ±1mm, and arrange the matching cylindrical tire frame, which needs to be firmly fixed to the embedded iron;

[0057] S302, beam section adjustment; complete all other welds of the beam section except the matching port corner welds, adjust the diagonal deviation of a single beam section to within 6mm, and the overall straightness deviation ≤6mm; the overall torsion of the box girder ≤6mm; the remaining welds here refer to all welds of the beam section except the matching port corner welds, such as: welds inside the structure, main welds of the web and top and bottom plates.

[0058] S303, the first beam segment matching, after all welding work is completed, the hollow box beam 1 is hoisted onto the cylindrical frame according to the ground sample line, and the hollow box beam 1 is positioned and adjusted using four three-way jacks, and the positioning error is controlled within 2mm;

[0059] Hoist the solid-web box girder 2 onto the matching frame. Anti-collision measures must be taken during hoisting to avoid collision with the already positioned beams and displacement. When matching the two beam sections, match them according to the horizontal reference line, and ensure that the misalignment of the two horizontal references is within 0 to 1 mm;

[0060] Positioning and adjusting the hollow box girder 1 Use at least four three-way jacks to position and adjust the position of the hollow box girder 1;

[0061] The three jacks are also applicable to the positioning adjustment of the solid-web box girder 2.

[0062] The positions of the three jacks are distributed at one end of the box girder body close to the joint and the end away from the joint. When matching, the jack at the joint of the hollow box girder 1 is set between the box girder joint and the tire frame, and the jack at the joint end of the solid box girder 2 is set between the two tire frame pillars close to the solid box girder 2.

[0063] S304, ring mouth matching, the hard stop of the top, bottom and belly and the misalignment within the adjacent 300mm range are controlled within 1mm, and the misalignment of the remaining range (soft stop) is controlled within 2mm. The control of misalignment is based on the middle of the matching port gap as the measurement reference; here, the hard stop refers to the support that can be formed by the belly plate and the top plate, and the soft stop refers to no support.

[0064] After the adjustment is completed, weld the corner welds of the matching ports. When welding, the two matching ports need to be connected as a whole using code plates on the inside and outside. When welding, a 2mm welding shrinkage allowance needs to be reserved and symmetrical segmented jump welding is required. After welding is completed, check the misalignment of the two matching ports;

[0065] S305, drawing the allowance line, measuring the overall length of the component, and drawing the theoretical line of the matching port and the allowance trimming line according to the measurement data and the vertical and horizontal baselines;

[0066] The margin trimming line = theoretical line of the port + 2.5mm, the matching gap is 10-20mm, and the margin marking is 15mm during actual marking, that is, it is controlled according to the middle value of 15mm of the tolerance of 10-20mm, not the boundary value, and the marking positioning error is controlled within ±1mm;

[0067] S306, trimming the excess, shifting the beam segment to ensure sufficient space for trimming the excess. Before shifting the beam segment, it is necessary to punch reference points at both ends of the beam segment center. The reference points are set on four surfaces, namely the top and bottom surfaces and the two web surfaces. Use a portable milling machine to trim the end joint margin according to the excess line and polish it smooth. The flatness of the end of the joint hole is controlled at 1mm / m, and the overall flatness does not exceed 3mm.

[0068] No matter which beam segment is selected for beam segment shifting, it can be done as long as there is enough processing space after the beam segment is shifted. For example, if you move the hollow segment away from the solid segment, you need to unify the upper and lower parts, and one segment should not move from beginning to end, and only one beam segment should be adjusted throughout the whole process.

[0069] S307, the second beam segment matching is carried out according to the beam segment sample punching reference point, and the overall misalignment during matching is ≤1mm; before the second matching, the bottom connecting plate is pre-placed inside the box, and during matching, the removed hollow beam segment is moved back to its original position with a three-way jack.

[0070] S308, match the drilling holes, take the horizontal baseline of one of the beam segments as the overall baseline, draw the hole group baselines of the two beam segments (draw the hole group baselines on the top, bottom and belly), the extreme edge hole margin lines and check the hole margins (0~+5mm). After the beam segment is adjusted in place, any segment can be used as the marking baseline. When we operate, we choose the hollow segment;

[0071] When drilling, drill 4 to 8 holes. The connection plate positioning holes are installed according to the vertical and horizontal reference lines. The product splicing plate is fixed with M24 process bolts, and the process bolts are tightened with a certain pre-tightening force (400-1000N·m);

[0072] Drill at least 8 drill holes, using 4 Tighten the punch pins and 4 M36 bolts to position them. Drill the remaining holes after installation. After processing, submit the inspection report.

[0073] After the hole group is qualified, the product connection plate is installed. The gap between the product connection plate and the component is less than 1mm, and during installation, the process bolts of a single hole group shall not be less than 20%, and the punch nails shall not be less than 10%;

[0074] S309, the third beam segment matching, shift the beam segment, repeat the above step S307 for matching. Due to the small matching space, it is impossible to pre-place all the internal splicing plates inside the box in advance, and they can only be matched again after the drilling is completed. Before matching, all the internal splicing plates are pre-placed inside the box, the second beam segment matching state is restored, the overall trial assembly is carried out, the overall data of the beam segment is measured, and the fitting gap of the connecting plate is checked. The restoration of the second beam segment matching state referred to here means that the beam segment is adjusted to a qualified state: the straightness, port gap, and overall size are all within the qualified range.

[0075] S310, support angle steel and outer sealing plate installation, install the supporting angle steel around the matching port, the angle steel should be installed symmetrically according to the matching gap, and the overall flatness of the outer plane should be controlled within ±2mm;

[0076] Install the bolted cover plate and drill it together with the supporting angle steel. If the threaded holes of the bolted cover plate do not match, drill the bottom hole first and drill the threaded holes together with the angle steel after the transfer and positioning is completed to avoid secondary tapping of the bolted cover plate and damage to the thread;

[0077] S311, bolt protection cover test installation, due to the small matching port space and the heavy weight of a single inner bolt protection cover, if the inner bolt protection cover is placed inside the box for overall test installation, it will be difficult to operate and inconvenient to install. Therefore, the inner bolt protection cover and the connecting plate need to be tested separately outside the box, and the fitting gap should be checked.

[0078] Example 2

[0079] Based on Example 1, this solution can be carried out according to the following steps:

[0080] Step 1: Beam segment division

[0081] The overall beam section is made of 1 / 2 hollow box beam and 1 / 2 solid box beam, which are connected by inner and outer connecting plates, inner bolt protection cover plate and outer cover plate through matching rings. The overall size is 2500 (height) * 3500 (width) * 46663 (length), and the matching port size is 2190 (height) * 3200 (length). Figure 1-Figure 3 .

[0082] The 1 / 2 hollow box girder and the 1 / 2 solid box girder and the corresponding connecting plates are manufactured separately, and the beam sections are matched as a whole after forming.

[0083] Step 2: Beam segment production

[0084] 2.1 Before forming the four sides of a single beam segment, a process partition needs to be added to the matching port to control the size of the matching port. The temporary support components are prefabricated to control the component flatness at 1mm / m, not exceeding 2mm overall, and the diagonal |L1-L2|≤3mm. In order to enhance the overall rigidity of the added process partition, reinforcing ribs need to be added to the horizontal and vertical supports respectively. When the temporary support components are installed as a whole, the top, bottom, and web of the box mouth need to be corrected and the assembly gap between the support components should not exceed 2mm. See Figure 4 and Figure 5

[0085] 2.2 When a single beam segment is produced, the homemade supporting angle steel for the matching end cover is not installed for the time being. When matching, it is installed as a whole by marking. In order to control the flatness of the outer cover plate, a 5mm plate thickness is reserved when the homemade angle steel is produced, and milling is performed using a milling machine.

[0086] 2.3 The corner welds at the matching box mouth are not welded temporarily. When the beam section is matched, the overall misalignment of the box mouth is adjusted to meet the requirements and then welded. If the position 3 and the position 4 are not welded temporarily, Figure 6 as shown in .

[0087] 2.4 To ensure the matching gap, a 50mm cutting margin is required for the matching port when making a single beam segment. The overall marking and cutting margin is trimmed after matching.

[0088] Step 3: Beam segment matching process

[0089] 3.1 Matching tire frame layout:

[0090] The error of marking the ground sample line according to the vertical and horizontal reference lines of the components shall be controlled within ±1mm, and a matching cylindrical tire frame shall be arranged. The tire frame needs to be firmly fixed to the embedded drawing, see Figure 7 and Figure 8 .

[0091] 3.2 Beam segment adjustment

[0092] Complete all other welding work of the beam sections except the matching port corner welds, adjust the diagonal deviation of a single beam section to within 6mm, and the overall straightness deviation is ≤6mm; the overall distortion of the box beam is ≤6mm.

[0093] 3.3 Beam segment matching (first time)

[0094] After all welding work is completed, the 1 / 2 hollow box beam is hoisted onto the cylindrical frame according to the ground sample line, and the beam is positioned and adjusted using four three-way jacks. The positioning error is controlled within 2mm. The 1 / 2 solid box beam is hoisted onto the matching frame. Anti-collision measures must be taken during hoisting to avoid collision with the already positioned beam and displacement. When matching the two beam sections, they are matched according to the horizontal reference line. The misalignment of the two horizontal references is guaranteed to be within 0-1mm. Fig. 9 shown.

[0095] 3.4 Ring Matching

[0096] The misalignment of the hard stop and the adjacent 300mm range of the top and bottom abdomen is controlled within 1mm, and the misalignment of the rest of the range (soft stop) is controlled within 2mm (the middle of the matching port gap is used as the measurement reference). After the adjustment is completed, the matching port corner welds are welded. When welding, the two matching ports need to be connected as a whole using the code plate inside and outside. When welding, a 2mm welding shrinkage allowance needs to be reserved and symmetrical segmented jump welding is required. After welding, the misalignment of the two matching ports is checked. See Fig.10 and Fig.11 .

[0097] 3.5 Marking the allowance line

[0098] Measure the entire length of the component, and mark the theoretical line and the allowance trimming line of the matching port according to the measured data and the vertical and horizontal baselines. The allowance trimming line = the theoretical line of the port + 2.5mm (the matching gap is 10-20mm, and the allowance trimming is 15mm during actual marking), and the marking positioning error is controlled at ±1mm.

[0099] 3.6 Residue trimming

[0100] The beam section is shifted to ensure sufficient space for trimming the margin. Before the beam section is shifted, the two ends of the beam section center position need to be punched with reference points (four faces). Use a portable milling machine to trim the end joint margin according to the margin line and polish it smooth. The flatness of the end of the joint hole is controlled at 1mm / m, and the overall flatness does not exceed 3mm. The punching reference point is the punching mark point. Fig.12 and Fig.13 shown.

[0101] 3.7 Beam segment matching (second time)

[0102] Match again according to the beam section sample punching reference point, and the overall misalignment during matching is ≤1mm. Before the second matching, pre-place the bottom connecting plate inside the box.

[0103] 3.8 Matching drilling

[0104] Take the horizontal baseline of the left section as the overall baseline, draw the hole group baseline (top, bottom and belly) of the left and right beam sections, the extreme edge hole margin line and check the hole margin (0~+5mm).

[0105] Drill 4 to 8 The product splicing plate is installed according to the vertical and horizontal reference lines through the positioning holes, and fixed with M24 process bolts, which are tightened with a certain pre-tightening force (400-1000N·m).

[0106] Drill at least 8 positioning holes, using 4 Tighten the punch pins and 4 M36 bolts to position them. Drill the remaining holes after installation. After processing, report and inspect.

[0107] After the hole group is qualified, the product connecting plate is installed. The gap between the product connecting plate and the component is less than 1mm, and during installation, the process bolts of a single hole group shall not be less than 20%, and the rivets shall not be less than 10%.

[0108] 3.9 Beam segment matching (third time)

[0109] Shift the beam segment and repeat the above step 3.7 for matching. Due to the small matching space, it is impossible to pre-place all the internal splicing plates inside the box in advance, and the matching can only be done again after the drilling is completed. Before matching, pre-place all the internal splicing plates inside the box, restore the second matching state, conduct overall trial assembly, measure the overall data of the beam segment, and check the fitting gap of the connecting plate.

[0110] 3.10 Installation of support angle steel and outer cover plate

[0111] Install the supporting angle steel around the matching port. The angle steel should be installed symmetrically according to the matching gap, and the overall flatness of the outer plane should be controlled within ±2mm.

[0112] Install the bolted cover plate and drill it together with the supporting angle steel. Due to the threaded holes of the bolted cover plate, if they do not match, drill the bottom holes first and then drill the threaded holes as a whole after the angle steel is transferred and positioned to avoid secondary tapping of the bolted cover plate and damage to the threads.

[0113] 3.11 Test installation of bolt protection cover

[0114] Due to the small space of the matching port and the heavy weight of a single inner bolt protection cover, if the inner bolt protection cover is placed inside the box for overall test installation, it will be difficult to operate and inconvenient to install. Therefore, the inner bolt protection cover and the connecting plate need to be tested separately outside the box and the fitting gap should be checked.

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bolt connection matching method for an ultra-long member with a large cross section, characterized in that: Including steps, S1. Beam segment division: the beam segment is divided into two parts: hollow box beam and solid box beam; S2, beam segment production, according to the divided beam segments, single beam segment production; S3, beam segment matching, first arrange the matching frame, then adjust the beam segment, perform the first beam segment matching, and then perform ring matching and excess trimming in sequence; perform the second beam segment matching and perform matching drilling; perform the third beam segment matching, then install the supporting angle steel and the outer sealing plate, and finally perform the bolt protection sealing plate test installation; The first beam segment matching is that the hollow box beam and the solid box beam are matched according to the horizontal reference line of the component; The second beam segment matching is to match again according to the beam segment sample punching reference points, the sample punching reference points are located at both ends of the beam segment center position, and drilling and component bottom splicing plate trial assembly are performed; The third beam segment matching is to repeat the process of the second beam segment matching, after the matching drilling is completed, all the internal splicing plates are pre-placed inside the box before matching, the second matching state is restored, the overall test assembly is carried out, the overall data of the beam segment is measured, and the fitting gap of the connection plate is checked; Specifically, the S1 is that the whole beam section is divided into two parts, one half is a hollow box beam, and the other half is a solid box beam, and the hollow box beam and the solid box beam are bolted together by matching rings; The hollow box girder and solid box girder and the corresponding connecting plates are manufactured separately and matched as a whole after the beam sections are formed.

2. The bolt connection matching method for super-long components with large cross-sections according to claim 1 is characterized in that: The step S2 specifically comprises: S201, before forming the four sides of a single beam segment, add a process partition at the matching port. A temporary support assembly is provided at the joint of two beam sections. The temporary support assembly is a rectangular frame as a whole, including a transverse support and a longitudinal support, and reinforcing ribs are provided inside the temporary support assembly; The temporary support components are prefabricated first, and the flatness of the temporary support components is controlled at 1mm / m, the overall flatness does not exceed 2mm, and the diagonal |L1-L2| ≤3mm; the overall installation of the temporary support components shall not exceed 2mm for the correction of the top, bottom and web of the box mouth and the assembly clearance of the support components; S202. When making a single beam segment, the self-made supporting angle steel for the end plate is not installed for the time being. When matching, the whole is marked and installed. When making the self-made angle steel, the plate thickness is reserved to 5mm; S203, the corner welds at the matching box opening are not welded temporarily, and the welds are welded after the overall misalignment of the box opening is adjusted to meet the requirements when the beam sections are matched; S204. When manufacturing a single beam segment, add at least 50mm of cutting allowance to the matching port, and trim the overall cutting allowance after matching.

3. The bolt connection matching method for super-long components with large cross-sections according to claim 1 is characterized in that: The step S3 specifically includes: S301, matching tire frame layout; S302, beam segment adjustment; S303, first beam segment matching; S304, ring port matching; S305, drawing a margin line; S306, trimming the remaining amount; S307, second beam segment matching; S308, matching drilling; S309, third beam segment matching; S310, installation of supporting angle steel and outer sealing plate; S311, test installation of bolt protection cover.

4. The bolt connection matching method for super-long components with large cross-sections according to claim 3 is characterized in that: The step S301, matching tire frame arrangement specifically includes drawing ground sample lines according to the vertical and horizontal reference lines of the components, arranging the matching cylindrical tire frame, and the tire frame is firmly fixed to the embedded iron; The step S302, beam section adjustment specifically includes completing all other welds of the beam section except the matching port corner welds, adjusting the diagonal deviation of a single beam section to within 6 mm, and the overall straightness deviation ≤ 6 mm; the overall distortion of the box beam ≤ 6 mm; The step S303, the first beam segment matching is specifically to hoist the hollow box beam onto the cylindrical frame according to the ground sample line after all welding work is completed, and to position and adjust the hollow box beam, and the positioning error is controlled within 2mm; The solid-web box girder is hoisted onto the matching frame. The two beam sections are matched according to the horizontal reference line, and the misalignment of the two horizontal references is 0~1mm.

5. The bolt connection matching method for super-long components with large cross-sections according to claim 4 is characterized in that: In the step S303, the hollow box girder is positioned and adjusted using at least four three-way jacks to position the hollow box girder; Three jacks are also applicable to the positioning adjustment of solid-web box girders.

6. The bolt connection matching method for super-long components with large cross-sections according to claim 5 is characterized in that: The step S304, ring port matching specifically includes that the misalignment of the hard stop of the top, bottom and abdomen and the adjacent 300mm range is controlled within 1mm, and the misalignment of the remaining range is within 2mm, and the control of the misalignment is based on the middle of the matching port gap as the measurement reference; After the adjustment is completed, weld the corner welds of the matching ports. During welding, the two matching ports need to be connected as a whole using code plates on the inside and outside. After the welding is completed, check the misalignment of the two matching ports. The step S305 of drawing the margin line specifically includes measuring the entire length of the component, and drawing the theoretical line of the matching port and the margin trimming line according to the measurement data and the vertical and horizontal baselines; The margin trimming line = the theoretical line of the port + 2.5mm, the matching gap is 10~20mm, and the marking positioning error is controlled within ±1mm; The step S306, trimming the excess, specifically includes shifting the beam segment to ensure sufficient space for trimming the excess, punching reference points at both ends of the beam segment center before shifting the beam segment; trimming the end of the joint margin according to the excess line, and controlling the flatness of the end of the joint hole to be 1mm / m, and not more than 3mm overall; The step S307, the second beam segment matching is specifically to match again according to the beam segment sample punching reference point, and the overall misalignment during matching is ≤1mm; before the second matching, the bottom connecting plate is pre-placed inside the box.

7. The bolt connection matching method for super-long components with large cross-sections according to claim 6 is characterized in that: The step S308, matching drilling, specifically, takes the horizontal baseline of one of the beam segments as the overall baseline, draws the hole group baselines and the extreme edge hole margin lines of the two beam segments, and checks the hole margins; When drilling, drill 4 to 8 ∅26 connection plate positioning holes, install the product splicing plate according to the vertical and horizontal reference lines, and use M24 process bolts to fix them. Apply a certain pre-tightening force (400 to 1000N•m) to the process bolts. Drill at least 8 positioning holes, use 4 ∅39 punches and 4 M36 bolts to tighten and position, and drill the remaining holes after installation is completed; Install the product connection plate, the gap between the product connection plate and the component is less than 1mm, and during installation, the process bolts of a single hole group shall not be less than 20%, and the punch nails shall not be less than 10%; The step S309, the third beam segment matching, is specifically to shift the beam segment, repeat the above step S307 for matching, and before matching, pre-place all internal splicing plates inside the box, perform overall trial assembly, measure the overall data of the beam segment, and check the fitting gap of the connecting plate.

8. The bolt connection matching method for super-long components with large cross-sections according to claim 7, characterized in that: The step S310, the installation of the supporting angle steel and the outer sealing plate is specifically to install the supporting angle steel around the matching port, and the overall flatness of the outer plane is controlled within ±2mm when the angle steel is installed; Install bolted cover plates and drill with supporting angle steel; The step S311, test installation of the bolt protection cover plate, specifically includes test installation of the inner bolt protection cover plate and the connecting plate separately outside the box body, and checking the fitting gap.

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