CN113668874A - Segmented sliding structure of string steel truss and construction method - Google Patents
Segmented sliding structure of string steel truss and construction method Download PDFInfo
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- CN113668874A CN113668874A CN202110977927.0A CN202110977927A CN113668874A CN 113668874 A CN113668874 A CN 113668874A CN 202110977927 A CN202110977927 A CN 202110977927A CN 113668874 A CN113668874 A CN 113668874A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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Abstract
The invention discloses a segmented sliding structure of a steel truss string and a construction method, and relates to the technical field of steel truss string construction. In order to solve the efficiency problem, the sliding structure comprises two long slide rails fixedly mounted on the ground and a supporting table fixedly mounted on the ground through round steel supporting legs, three short slide rails are fixedly mounted on the outer wall of the top of the supporting table, a plurality of high-altitude assembling jig frames are fixedly mounted on the top of the supporting table, the sliding structure further comprises a plurality of L-shaped frames fixedly mounted on the ground and a ground assembling table fixed on the ground through square steel supporting legs, the method comprises the steps of firstly assembling a first truss on the ground assembling table in a segmented mode, then hoisting the first truss to the high-altitude assembling jig frames for splicing, and assembling a second truss while splicing. The working procedures of assembling, splicing, cable tensioning construction, horizontal fixing of adjacent trusses and the like of a plurality of trusses can be simultaneously and alternately carried out, so that the construction efficiency is greatly improved, and the construction period is shortened.
Description
Technical Field
The invention relates to the technical field of construction of a string steel truss, in particular to a segmented sliding structure of the string steel truss and a construction method.
Background
With the development of the building industry in China, steel structure buildings are widely applied to the fields of gymnasiums, meeting places, bridges and the like due to the advantages of simplicity and convenience in construction, short construction period and the like, and for some projects with short construction period, the problems cannot be met by adopting common steel frame field welding, and the adoption of a segmented manufacturing and sliding method is an effective measure for solving the problems.
Through retrieval, a Chinese patent with publication number of CN106760561B discloses a method for splicing a sectional sliding roof steel truss, which comprises the steps of building a construction platform, manufacturing a steel truss basic component unit, installing a first sliding shoe and a second sliding shoe, installing a support truss, installing a longitudinal main truss, installing a transverse main truss, hoisting and transversely connecting the steel truss basic component unit, sliding the sectional steel truss, falling the sectional steel truss, assembling and sliding falling other sectional steel trusses, connecting transverse rods among the sectional steel trusses, dismantling the second sliding shoe and a sliding track, and dismantling the construction platform.
The above patents suffer from the following disadvantages: although the sectional sliding technology is adopted, the assembling, splicing and fixing processes of the truss cannot be performed in a crossed manner, the shortening degree of the construction period is limited, and further improvement is needed.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a string steel truss segmented sliding structure and a construction method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a string steel truss segmentation sliding structure, includes two fixed mounting in the long slide rail on ground and through round steel supporting leg fixed mounting in the brace table on ground, and the top outer wall fixed mounting of brace table has three short slide rail, and the bed-jig is assembled in a plurality of high altitude to brace table's top fixed mounting, and it still includes a plurality of fixed mounting in "L" type frame on ground and the ground assembly bench that is fixed in ground through the square steel supporting leg.
Preferably: the L-shaped frame, the high-altitude assembling jig frame and the ground assembling table are all formed by welding square steel, the L-shaped frame, the high-altitude assembling jig frame and the ground assembling table are all of rectangular structures, and X-shaped reinforcing ribs are fixedly installed inside the rectangular structures.
Further: the bottom fixed mounting of long slide rail has square steel support column one, and square steel support column one fixed mounting is in ground, and the top fixed mounting of square steel support column one has two A of side rib of two symmetries, and two A of side rib and the bottom outer wall fixed connection of long slide rail, and the bottom fixed mounting of square steel support column one has four A of side rib, a side rib A and ground fixed connection.
On the basis of the scheme: the bottom fixed mounting of short slide rail has square steel support column two, and square steel support column two fixed mounting is on a supporting bench's top outer wall, and the top fixed mounting of square steel support column two has the side rib B of two symmetries, side rib B and the bottom outer wall fixed connection of short slide rail, and the bottom fixed mounting of square steel support column two has four side rib two B, side rib two B and a supporting bench fixed connection.
The better scheme in the scheme is as follows: the tail end of the short slide rail is inclined and the inclined direction is downward.
As a further scheme of the invention: the top of long slide rail supports the truss through the support module that slides, and two parallel raceways are seted up to the inner wall of long slide rail, and the support module that slides includes tip backup pad and gyro wheel, and the bottom outer wall fixed mounting of tip backup pad has the wheel board, and four at least gyro wheels rotate to be connected in the both sides of wheel board, and symmetrical arrangement's roll connection is in the inside of raceway.
Meanwhile, the outer wall of the top of the end supporting plate is fixedly provided with limiting columns corresponding to the number and the positions of the truss mounting holes.
As a preferable aspect of the present invention: the short slide rail slides and supports the truss through the supporting component, the supporting component comprises an intermediate support plate and a T-shaped sliding block, the intermediate support plate is used for supporting the truss, the T-shaped sliding block is in sliding fit with the short slide rail, a first slide rod is fixedly mounted on the outer wall of one side, opposite to the first slide rod, of the intermediate support plate, a first guide sleeve is arranged in sliding fit with the outer wall of the first slide rod, and a spring is sleeved on the outer wall of the first slide rod.
Meanwhile, a second sliding rod is fixedly mounted on the outer wall of the bottom of the middle supporting plate, a second guide sleeve is connected to the outer wall of the second sliding rod in a sliding mode, the second guide sleeve is fixedly mounted on the outer wall of the top of the T-shaped sliding block, and the outer wall of the second sliding rod is connected with a limiting nut through threads.
A construction method of a segmental sliding structure of a string steel truss is characterized by comprising the following specific steps:
s1: firstly, assembling a first truss on a ground assembling table in a segmented mode;
s2: then, hoisting a first truss to a high-altitude assembly jig frame for splicing, and assembling a second truss while splicing;
s3: hoisting the spliced first truss to the end supporting plate and the middle supporting plate for supporting, changing the support of the middle supporting plate to the truss from flexibility to rigidity in a mode of screwing a limiting nut, splicing the second truss while supporting, and assembling the third truss;
s4: sliding a first truss to a guy cable tensioning station, performing guy cable tensioning construction for stabilization, and simultaneously splicing a third truss and assembling a fourth truss;
s5: slipping the first truss from the short slide rail, hoisting and slipping the second truss, stretching and stabilizing the stay cable, and then horizontally bracing and connecting the first truss and the second truss;
s6: after connection, the first truss and the second truss are integrally slipped off from a short slide rail, the third truss is hoisted, slid and tensioned by a guy cable to be stable, then the third truss and the second truss are horizontally connected by a stay rod, and simultaneously, the fourth truss is spliced and the fifth truss is assembled;
s7: and repeating the steps until all the trusses are constructed.
The invention has the beneficial effects that:
1. this truss string steel truss segmentation sliding structure, the segmentation equipment of last truss on ground assembly bench finishes, hoist and mount back, when splicing it, the segmentation equipment of next truss can be carried out on the ground assembly bench, when the concatenation of last truss is accomplished, when sliding to cable stretch-draw station construction, the segmentation equipment of next truss is accomplished, can carry out the concatenation of next truss on the bed-jig is assembled in the high altitude, the equipment of a plurality of trusses of this structure of messenger, the concatenation, cable stretch-draw construction, processes such as adjacent truss level is fixed all can alternately go on simultaneously, construction efficiency is greatly improved, the reduction of erection time.
2. This truss string section sliding structure, at first, "L" type frame, high altitude are assembled the bed-jig and are formed with ground assembly platform adoption square steel welding, can make in advance, directly transport to the on-the-spot use, raise the efficiency, secondly to the equipment of truss, concatenation process, need provide the support to truss and constructor, "L" type frame, high altitude are assembled the bed-jig and are all adopted rectangle structure cooperation "X" type to consolidate the rib, form a plurality of triangle-shaped structures, increase the stability of support.
3. This string steel truss segmentation sliding structure, square steel support column one can provide the holding power for long slide rail, and the setting of side rib two A and side rib A of square steel support column top and bottom, can increase the load of its length direction and perpendicular to length direction of edge of long slide rail, prevent to take place the displacement in the support process, square steel support column two can provide the holding power for short slide rail, and the setting of side rib one B and side rib two B of square steel support column two tops and bottom, can increase the load of its length direction and perpendicular to length direction of edge of short slide rail, prevent to take place the displacement in the support process, the stability of structure has been improved.
4. This string steel truss segmentation sliding structure sets up to the slope downwards through the tail end with short slide rail, can make the truss when derailing with short slide rail, and the holding power diminishes gradually, rather than uninstallation suddenly, and the benefit of doing so can be gradually will produce thrust to both ends slip roof beam, rather than produce a large amount of levels in the twinkling of an eye to overall structure's security, stability have been promoted by a wide margin.
5. This string steel truss segmentation sliding structure supports the form that adopts the support module that slides through sliding with long slide rail and truss and realizes, and it adopts gyro wheel and the cooperation of sliding of long slide rail roll to can the direct separation of long slide rail, when the truss of front end derails, can directly take off this support module that slides, put the rear end, also very big improvement the convenience when satisfying the construction demand.
6. The string steel truss segmented sliding structure is improved by a sliding connection mode of a short slide rail and a truss, a supporting point is designed for the height of an intermediate supporting plate in an initial state, when the truss is hoisted and falls, the intermediate supporting plate is firstly contacted, on one hand, a spring can buffer the impact force of initial contact, on the other hand, the supporting force of the intermediate supporting plate to the truss is linearly increased along with the continuous falling of the truss, then, when two ends of the truss are contacted with a long slide rail, the collision impact is smaller, the use reliability is improved, and by arranging a guide sleeve II and a slide rod II, after the truss is contacted with the long slide rail and the short slide rail and the primary fixation is finished, the relative distance between the guide sleeve II and the slide rod II can be limited by screwing a limiting nut, so that the supporting force of the intermediate supporting plate to the truss is deformed and rigid flexibly, and the stress between the trusses is eliminated, further preventing subsequent deformation.
7. The construction method of the segmental sliding structure of the string steel truss comprises the steps that the truss is firstly slid to the end part of the sliding short rail to carry out cable installation and tensioning, after the cable tensioning is finished, the truss slides for the second time to the next axis, because the cable tensioning is finished, the truss forms a stable system, and the downwarp value after the truss leaves the rails and the thrust on the long rails at the two ends can be reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic view of the overall structure of a segmental sliding structure of a string steel truss according to the present invention;
FIG. 2 is a schematic structural view of an L-shaped frame, an overhead assembly jig frame and a ground assembly table of a segmented sliding structure of a string steel truss provided by the invention;
fig. 3 is a schematic view of a supporting structure of a long slide rail and the ground of a segmented sliding structure of a string steel truss according to the present invention;
FIG. 4 is a schematic view of a supporting structure of a short slide rail and a supporting platform of a segmented sliding structure of a string steel truss according to the present invention;
FIG. 5 is a schematic structural view of a sliding support module of a segmental sliding structure of a string steel truss according to the present invention;
fig. 6 is a structural schematic diagram of a support assembly of a segmented sliding structure of a string steel truss according to the present invention.
In the figure: 1-ground, 2-long slide rail, 3-short slide rail, 4- 'L' -shaped frame, 5-high-altitude assembly jig frame, 6-ground assembly table, 7-support table, 8-round steel support leg, 9-square steel support leg, 10-side rib I A, 11-square steel support column I, 12-side rib II A, 13-side rib I B, 14-square steel support column II and 15-side rib II B, 16-support component, 17-rolling groove, 18-rolling wheel, 19-wheel plate, 20-end support plate, 21-limit column, 22-middle support plate, 23-guide sleeve I, 24-spring, 25-slide bar I, 26-T-shaped slide block, 27-guide sleeve II, 28-limit nut and 29-slide bar II.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1:
a string steel truss segmented sliding structure is shown in figures 1-4 and comprises two long slide rails 2 fixedly arranged on the ground 1 and a support table 7 fixedly arranged on the ground 1 through round steel support legs 8, wherein three short slide rails 3 are fixedly arranged on the outer wall of the top of the support table 7, a plurality of high-altitude assembling jig frames 5 are fixed on the top of the support table 7 through bolts, and the string steel truss segmented sliding structure also comprises a plurality of L-shaped frames 4 fixed on the ground 1 through bolts and a ground assembling table 6 fixed on the ground 1 through square steel support legs 9; when the sliding structure is used, firstly, the whole truss is assembled on a ground assembly table 6 in sections, the assembled truss is hung to the high altitude and placed on an overhead assembly jig frame 5, a plurality of sections of trusses are assembled, after the assembly is finished, the whole truss is hoisted and supported by two long slide rails 2 and three short slide rails 3, after the support, the truss is slid to a construction position where a guy cable is stretched, the guy cable is stretched and fixed, the assembly of a first truss is finished, then the steps are repeated to assemble a second truss, after the assembly is finished, the first truss and the second truss are combined and fixed in the horizontal direction, the reciprocating is carried out until the whole truss is finished, and when the assembly of the previous truss on the ground assembly table 6 in sections is finished, after the hoisting, the truss is spliced, the next truss can be assembled on the ground assembly table 6 in sections, when the last truss is spliced and completed and slides to the cable tensioning station for construction, the next truss is assembled in a segmented mode, the next truss can be spliced on the high-altitude splicing jig frame 5, so that the procedures of assembling, splicing, cable tensioning construction, horizontal fixing of adjacent trusses and the like of the structure can be performed in a crossed mode, the construction efficiency is greatly improved, and the construction period is shortened.
In order to solve the problem of convenience; as shown in fig. 1 and 2, the L-shaped frame 4, the high-altitude assembling jig frame 5 and the ground assembling table 6 are all formed by welding square steel, the L-shaped frame 4, the high-altitude assembling jig frame 5 and the ground assembling table 6 are all rectangular structures, and X-shaped reinforcing ribs are welded inside the rectangular structures; firstly, the L-shaped frame 4, the high-altitude assembling jig frame 5 and the ground assembling table 6 are formed by welding square steel and can be manufactured in advance and directly transported to a site for use, the efficiency is improved, secondly, the truss and constructors need to be supported in the assembling and splicing processes of the truss, and the L-shaped frame 4, the high-altitude assembling jig frame 5 and the ground assembling table 6 are all provided with rectangular structures matched with X-shaped reinforcing ribs to form a plurality of triangular structures, so that the supporting stability is improved.
In order to solve the supporting problem of the long slide rail 2; as shown in fig. 3, a first square steel supporting column 11 is fixed to the bottom of the long slide rail 2 through bolts, the first square steel supporting column 11 is fixed to the ground 1 through bolts, two symmetrical second side ribs a12 are welded to the top of the first square steel supporting column 11, the second side ribs a12 are fixed to the outer wall of the bottom of the long slide rail 2 through bolts, four first side ribs a10 are welded to the bottom of the first square steel supporting column 11, and the first side ribs a10 are fixed to the ground 1 through bolts; the first square steel supporting column 11 can provide supporting force for the long slide rail 2, and the arrangement of the second side rib A12 and the first side rib A10 at the top and the bottom of the first square steel supporting column 11 can increase the load of the long slide rail 2 along the length direction and the direction perpendicular to the length direction, and prevent displacement in the supporting process.
In order to solve the supporting problem of the short slide rail 3; as shown in fig. 4, a square steel support column two 14 is fixed to the bottom of the short slide rail 3 through a bolt, the square steel support column two 14 is fixed to the outer wall of the top of the support table 7 through a bolt, two symmetrical side ribs one B13 are welded to the top of the square steel support column two 14, the side ribs one B13 are fixed to the outer wall of the bottom of the short slide rail 3 through bolts, four side ribs two B15 are welded to the bottom of the square steel support column two 14, and the side ribs two B15 are fixed to the support table 7 through bolts; the second square steel support column 14 can provide supporting force for the short slide rail 3, and the first side rib B13 and the second side rib B15 at the top and the bottom of the second square steel support column 14 can increase the load of the short slide rail 3 along the length direction and the direction perpendicular to the length direction, prevent displacement in the supporting process and improve the stability of the structure.
In order to solve the problem that the load is suddenly increased when the truss is derailed, the tail end of the short slide rail 3 is obliquely arranged, and the oblique direction is downward; because the fixed back of truss cable, continue to slide and can derail with short slide rail 3, only two long slide rail 2 provide the holding power to the both sides of truss, lead to the middle downwarping that has certain degree of truss, and also produce great vertical thrust to long slide rail 2, tail end through with short slide rail 3 sets up to the slope downwards, can make the truss when derailing with short slide rail 3, the holding power diminishes gradually, but not uninstallation suddenly, the benefit of doing so can be gradually will produce thrust to both ends slip roof beam, rather than produce a large amount of horizontal thrust in the twinkling of an eye, thereby overall structure's security has been promoted by a wide margin, stability.
When the truss assembling device is used, firstly, the whole truss is assembled on a ground assembling table 6 in sections, the assembled truss is hung to the high altitude after being assembled, the assembled truss is placed on a high altitude assembling jig frame 5, a plurality of sections of trusses are assembled, after the assembling is finished, the whole truss is hoisted and supported through two long slide rails 2 and three short slide rails 3, after the support, the truss is slid to a construction position where a guy cable is stretched and fixed, the assembling of a first truss is finished, then the steps are repeated to assemble a second truss, after the assembling is finished, the first truss and the second truss are combined and fixed in the horizontal direction, the steps are repeated until the whole truss is completed, when the assembling of the previous truss on the ground assembling table 6 in sections is finished, the hoisting is performed, and the assembling of the next truss can be performed on the ground assembling table 6 at the same time, when the last truss is spliced and finished and slides to the cable tensioning station for construction, the next truss is assembled in a segmented mode, the next truss can be spliced on the high-altitude splicing jig frame 5, and the processes of assembling, splicing, cable tensioning construction, horizontal fixing of adjacent trusses and the like of the structure can be simultaneously and alternately carried out.
Example 2:
a string steel truss segmented sliding structure is improved on the basis of embodiment 1, and as shown in fig. 5, a sliding connection mode of a long slide rail 2 and a truss can be any one of the forms that the long slide rail 2 is matched with various slide blocks, so that the problem of convenience in construction is solved; in the present embodiment, preferably: the truss is supported through the support module that slides at the top of long slide rail 2, and two parallel raceways 17 have been seted up to the inner wall of long slide rail 2, and the support module that slides includes tip backup pad 20 and gyro wheel 18, and the bottom outer wall welding of tip backup pad 20 has wheel board 19, and four at least gyro wheels 18 rotate to be connected in the both sides of wheel board 19, and symmetrical arrangement's roll connection is in the inside of raceway 17.
For fixing the truss, as shown in fig. 5, the top outer wall of the end support plate 20 is welded with limiting columns 21 corresponding to the number and the position of the truss mounting holes.
In this embodiment, when the truss slided, there were two at least trusses to be located long slide rail 2 simultaneously and slide, when the preceding truss derailed like this, can't reset the slider that supports its slip, can't satisfy the construction demand, and this embodiment, support the form that adopts the support module that slides through sliding with long slide rail 2 and truss and realize, it adopts gyro wheel and the cooperation of sliding of long slide rail 2 roll, and can long slide rail 2 direct separation, when the truss of front end derails, can directly take off this support module that slides, put the rear end, also very big improvement the convenience when satisfying the construction demand.
Example 3:
a string steel truss segmentation sliding structure, as shown in figure 6, short slide rail 3 slides and supports the truss through support assembly 16, support assembly 16 includes middle support plate 22 used for supporting the truss and "T" type slider 26 in sliding fit with short slide rail 3, slide bar 25 is welded on the outer wall of one side opposite to middle support plate 22 and "T" type slider 26, the outer wall of a pair of slide bar 25 is in sliding fit with the same guide sleeve 23, and the outer wall of slide bar 25 is sleeved with spring 24.
For rigid supporting and limiting, as shown in fig. 6, a second sliding rod 29 is welded on the outer wall of the bottom of the middle supporting plate 22, a second guide sleeve 27 is connected on the outer wall of the second sliding rod 29 in a sliding manner, the second guide sleeve 27 is welded on the outer wall of the top of the T-shaped sliding block 26, and a limiting nut 28 is connected on the outer wall of the second sliding rod 29 through threads.
In the embodiment, because the truss has a certain curvature, when the rigid support is directly adopted, due to the problems of design error, installation error, self deformation of the truss and the like, multi-point support cannot be contacted simultaneously, so that the impact force at one moment of single-point contact is larger, in the embodiment, through improving the sliding connection mode of the short slide rail 3 and the truss, the support point is designed at the height of the intermediate support plate 22 in the initial state, when the truss is hoisted and falls down, the intermediate support plate 22 is firstly contacted, on one hand, the spring 24 can buffer the initial contact impact force, on the other hand, as the truss continues to fall down, the support force of the intermediate support plate 22 to the truss is linearly increased, and then when the two ends of the truss are contacted with the long slide rail 2, the impact is smaller, so that the use reliability is improved, and through the arrangement of the guide sleeve II 27 and the slide bar II 29, after the truss is contacted with the long slide rail 2 and the short slide rail 3 and is primarily fixed, the limiting nut 28 can be screwed to limit the relative distance between the second guide sleeve 27 and the second sliding rod 29, so that the supporting force of the intermediate supporting plate 22 on the truss is made to be flexible and rigid, the stress between the trusses is eliminated, and the subsequent deformation is further prevented.
Example 4:
a construction method of a segmental sliding structure of a string steel truss is shown in figures 1-6, and comprises the following specific steps:
s1: firstly, assembling a first truss on a ground assembling table 6 in a segmented mode;
s2: then, hoisting a first truss to a high-altitude assembling jig frame 5 for splicing, and assembling a second truss while splicing;
s3: the spliced first truss is hoisted to the end support plate 20 and the middle support plate 22 to be supported, the middle support plate 22 is screwed to change the support of the truss from flexibility to rigidity, the second truss is spliced while being supported, and the third truss is assembled at the same time;
s4: sliding a first truss to a guy cable tensioning station, performing guy cable tensioning construction for stabilization, and simultaneously splicing a third truss and assembling a fourth truss;
s5: slipping the first truss off the short slide rail 3, hoisting and slipping the second truss, stretching and stabilizing the stay cable, and then horizontally bracing and connecting the first truss and the second truss;
s6: after connection, the whole of the first truss and the second truss slips off a short slide rail 3, the third truss is hoisted, slipped and tensioned by a guy cable to be stable, then the third truss and the second truss are horizontally connected by stay bars, and simultaneously the fourth truss is spliced and the fifth truss is assembled;
s7: and repeating the steps until all the trusses are constructed.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a string steel truss segmentation sliding structure, includes two fixed mounting in long slide rail (2) of ground (1) and through round steel supporting leg (8) fixed mounting in brace table (7) of ground (1), its characterized in that, the top outer wall fixed mounting of brace table (7) has three short slide rail (3), the top fixed mounting of brace table (7) has a plurality of high altitudes to assemble bed-jig (5), and it still includes a plurality of fixed mounting in "L" type frame (4) of ground (1) and is fixed in ground equipment platform (6) of ground (1) through square steel supporting leg (9).
2. A truss string steel subsection slippage structure as claimed in claim 1, wherein the L-shaped frame (4), the high-altitude assembly jig frame (5) and the ground assembly table (6) are all welded by square steel, the L-shaped frame (4), the high-altitude assembly jig frame (5) and the ground assembly table (6) are all rectangular structures, and X-shaped reinforcing ribs are fixedly installed inside the rectangular structures.
3. A truss string steel truss segmentation sliding structure as claimed in claim 1, wherein the bottom of the long slide rail (2) is fixedly provided with a first square steel support column (11), the first square steel support column (11) is fixedly provided with the ground (1), and the top of the first square steel support column (11) is fixedly provided with two symmetrical second side ribs A (12), the second side ribs A (12) are fixedly connected with the outer wall of the bottom of the long slide rail (2), the bottom of the first square steel support column (11) is fixedly provided with four first side ribs A (10), and the first side ribs A (10) are fixedly connected with the ground (1).
4. A truss string steel truss segmented sliding structure as claimed in claim 3, wherein a second square steel supporting column (14) is fixedly mounted at the bottom of the short sliding rail (3), the second square steel supporting column (14) is fixedly mounted on the outer wall of the top of the supporting table (7), two symmetrical first side ribs B (13) are fixedly mounted at the top of the second square steel supporting column (14), the first side ribs B (13) are fixedly connected with the outer wall of the bottom of the short sliding rail (3), four second side ribs B (15) are fixedly mounted at the bottom of the second square steel supporting column (14), and the second side ribs B (15) are fixedly connected with the supporting table (7).
5. A tension string steel truss segmented slipping structure according to claim 1, wherein the tail end of the short sliding rail (3) is inclined and the inclination direction is downward.
6. A truss string steel truss segmented sliding structure according to claim 1, wherein the truss is supported by a sliding support module at the top of the long slide rail (2), two parallel rolling grooves (17) are formed in the inner wall of the long slide rail (2), the sliding support module comprises an end support plate (20) and rollers (18), a wheel plate (19) is fixedly mounted on the outer wall of the bottom of the end support plate (20), at least four rollers (18) are rotatably connected to two sides of the wheel plate (19), and the rollers are symmetrically arranged and are rotatably connected to the inside of the rolling grooves (17).
7. A truss string steel truss segmented slippage structure as claimed in claim 6, wherein the top outer wall of the end support plate (20) is fixedly provided with limiting columns (21) corresponding to the number and the position of the truss mounting holes.
8. A truss string steel truss segmented slippage structure according to claim 1, wherein the short slide rail (3) supports the truss in a slippage mode through a support assembly (16), the support assembly (16) comprises a middle support plate (22) for supporting the truss and a T-shaped slide block (26) in sliding fit with the short slide rail (3), slide rods (25) are fixedly mounted on the outer walls of the middle support plate (22) and the T-shaped slide block (26) on the opposite sides, the same guide sleeve (23) is in sliding fit with the outer wall of the pair of slide rods (25), and springs (24) are sleeved on the outer walls of the slide rods (25).
9. A tension string steel truss segmented sliding structure as claimed in claim 8, wherein a second sliding rod (29) is fixedly installed on the outer wall of the bottom of the intermediate support plate (22), a second guide sleeve (27) is slidably connected to the outer wall of the second sliding rod (29), the second guide sleeve (27) is fixedly installed on the outer wall of the top of the T-shaped sliding block (26), and a limit nut (28) is connected to the outer wall of the second sliding rod (29) through threads.
10. A construction method of a segmental sliding structure of a string steel truss is characterized by comprising the following specific steps:
s1: firstly, assembling a first truss on a ground assembling table (6) in a segmented mode;
s2: then, hoisting a first truss to a high-altitude assembling jig frame (5) for splicing, and assembling a second truss while splicing;
s3: after splicing, the first truss is hoisted to the end supporting plate (20) and the middle supporting plate (22) to be supported, the middle supporting plate (22) is changed from flexibility to rigidity in a mode of screwing a limiting nut (28), the second truss is spliced while being supported, and the third truss is assembled at the same time;
s4: sliding a first truss to a guy cable tensioning station, performing guy cable tensioning construction for stabilization, and simultaneously splicing a third truss and assembling a fourth truss;
s5: slipping the first truss off the short slide rail (3), hoisting and slipping the second truss, stretching and stabilizing the stay cable, and then horizontally bracing and connecting the first truss and the second truss;
s6: after connection, the whole of the first truss and the second truss slips off a short slide rail (3), the third truss is hoisted, slipped and tensioned by a guy cable to be stable, then the third truss and the second truss are horizontally connected by stay bars, and simultaneously the fourth truss is spliced and the fifth truss is assembled;
s7: and repeating the steps until all the trusses are constructed.
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