CN115149488B - Combined type large-span buried cable suspension protection system based on bailey beam - Google Patents
Combined type large-span buried cable suspension protection system based on bailey beam Download PDFInfo
- Publication number
- CN115149488B CN115149488B CN202210881704.9A CN202210881704A CN115149488B CN 115149488 B CN115149488 B CN 115149488B CN 202210881704 A CN202210881704 A CN 202210881704A CN 115149488 B CN115149488 B CN 115149488B
- Authority
- CN
- China
- Prior art keywords
- loosening
- groove
- beams
- steel
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 139
- 239000010959 steel Substances 0.000 claims abstract description 139
- 238000005096 rolling process Methods 0.000 claims description 26
- 238000010276 construction Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 7
- 239000012634 fragment Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
Abstract
The invention relates to the technical field of large-span buried cable suspension, in particular to a combined large-span buried cable suspension protection system based on a bailey beam, which comprises the following components: beret beams, crown beams, fixing grooves, fender piles and embedded steel plates; the beneficial effects are as follows: the structure can realize the suspension protection of large-dead-weight and large-span buried high-voltage cables in a deep foundation pit, reduces the deformation of the power grid structure in the suspension process, avoids the situation that fragments fall off to hurt people, has high safety coefficient, simultaneously avoids the influence of high-voltage cable relocation on the overall construction period, and the used main materials can be recycled, thus saving the cost on the whole.
Description
Technical Field
The invention belongs to the technical field of large-span buried cable suspension, and particularly relates to a combined large-span buried cable suspension protection system based on a bailey beam.
Background
Deep foundation pit refers to an engineering where the depth of excavation is more than 5 meters (including 5 meters), or where the depth is not more than 5 meters, but where the geological conditions and surrounding environment and underground pipelines are particularly complex.
At present, a deep foundation pit in a busy zone needs to move a pipeline in an operation range out of the operation range before construction, common section steel can be used for in-situ protection on some small self-weight pipelines, and if an in-situ protection scheme is adopted for a partially buried high-voltage cable, the pipeline is in a structure form of a power grid and concrete covered outside, so that the self weight is large, the span is large, the deformation control requirement is high, and the in-situ suspension is difficult; if the scheme of pipeline relocation is adopted, the high-voltage cable relocation has the problems of long approval flow, complicated power outage procedure, and large influence on the overall construction period due to the fact that the overall procedure handling time is more than half a year.
Disclosure of Invention
The invention aims to provide a combined large-span buried cable suspension protection system based on a bailey beam, which aims to solve the problem that a mobile hard disk interface is easy to damage.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a bailey beam-based combined large-span buried cable suspension protection system, the bailey beam-based combined large-span buried cable suspension protection system comprising:
the bailey beams are arranged at two sides of the power grid and are arranged in parallel with the power grid;
the crown beam is provided with two groups and is in an L-shaped structure;
the fixed groove is formed in the center of the top surface of the crown beam, two ends of the power grid are both positioned in the fixed groove, and the bailey beam is positioned at the outer side of the fixed groove;
the guard piles are fixed on the bottom end surface of the crown beam, a plurality of groups of guard piles are arranged, and one group of crown beams is matched with two groups of guard piles; and
The embedded steel plate is fixed on the upper end surface of the crown beam and is positioned on two sides of the fixed groove, the top end surface of the embedded steel plate is flush with the upper end surface of the crown beam, and the Bailey beam and two ends are vertically welded on the top end surface of the embedded steel plate.
Preferably, the outside cover of power calandria is equipped with wire rope protection network, wire rope protection network bottom surface and fixed slot bottom surface contact, and wire rope protection network below is provided with the collet steel sheet, and the collet steel sheet is located between two sets of crown beams, and crown beam top surface and wire rope protection network bottom surface parallel and level setting.
Preferably, the transverse I-steel is arranged below the collet steel plate, the transverse I-steel is arranged in parallel with the crown beam, a plurality of groups of transverse I-steel are arranged, the center lines of the electric power grid are in linear distribution, the longitudinal I-steel is arranged below the transverse I-steel, the longitudinal I-steel is positioned right below the bailey beam, the longitudinal I-steel is arranged in parallel with the bailey beam, finish rolling deformed steel bars are arranged on the surface of the bailey beam, the finish rolling deformed steel passes through the bailey beam and the longitudinal I-steel, and the bailey beam is connected with the longitudinal I-steel through a locknut.
Preferably, the two sides of the Bailey beam in the middle are provided with lattice columns, the top ends of the lattice columns are provided with double-spliced groove steel beams, the double-spliced groove steel beams are provided with a plurality of groups, the top end surfaces of the double-spliced groove steel beams are flush with the bottom end surfaces of the longitudinal I-steel beams, the surfaces of the lattice columns are provided with channel steel inclined rods for supporting the double-spliced groove steel beams, and a scissor brace is arranged between the two groups of lattice columns.
Preferably, the surface of the Bailey beam is provided with an anti-loosening bottom block and an adjusting block, the anti-loosening bottom block is positioned on the top surface of the Bailey beam, the adjusting block is positioned under the anti-loosening bottom block, finish rolling threaded steel passes through the anti-loosening bottom block and is arranged with the adjusting block, the surface of the anti-loosening bottom block is provided with an internal threaded hole in threaded fit with the finish rolling threaded steel, the surface of the adjusting block is provided with a through hole in coaxial arrangement with the internal threaded hole on the surface of the anti-loosening bottom block, and the anti-loosening bottom block is vertically limited by the matching of the adjusting block with respect to the finish rolling threaded steel.
Preferably, the anti-loosening fixing block is arranged on the top end surface of the anti-loosening bottom block or the bottom end surface of the longitudinal I-steel, the anti-loosening fixing blocks are of arc plate structures, the anti-loosening fixing blocks are provided with a plurality of groups, the anti-loosening fixing blocks are circumferentially distributed by taking the axial lead of the threaded holes in the anti-loosening bottom block as the center of a circle, anti-loosening inclined planes are arranged on the surface of the anti-loosening fixing blocks, the cross section of each anti-loosening fixing block is in a right-angle trapezoid structure, the anti-loosening inclined planes are in one-to-one correspondence with the anti-loosening fixing blocks, and the plurality of groups of anti-loosening inclined planes face clockwise.
Preferably, the locknut is sleeved on the outer side surface of the finish rolling deformed steel bar and is in threaded fit with the finish rolling deformed steel bar, the locknut is arranged above the lockbottom block or below the longitudinal I-steel bar, one group of finish rolling deformed steel bars are matched with two groups of locknuts, the locknut is close to one end surface of the lockbottom block or the longitudinal I-steel bar, the locktop groove is of an annular structure, a lockspring and a lockmovable block are arranged in the locktop groove, one end of the lockspring is connected with the innermost end of the locktop groove, and the other end of the lockspring is connected with the lockmovable block.
Preferably, the anti-loosening movable block is far away from the surface of one end of the anti-loosening spring, an anti-loosening groove is formed in the cross section of the anti-loosening groove in a -shaped structure, the anti-loosening groove is in an arc-shaped structure, the arc inner diameter of the anti-loosening groove is equal to that of the anti-loosening fixed block, a plurality of groups of anti-loosening grooves are formed, the anti-loosening movable block is circumferentially distributed by taking the axial lead of the anti-loosening movable block as the center of a circle, and the anti-loosening grooves are in one-to-one correspondence with the anti-loosening fixed blocks.
Preferably, the guide way has been seted up to locking roof groove outside surface, and the guide way runs through locknut setting, and guide way and locking roof groove axial lead parallel arrangement, the inside guide bar that is provided with of guide way, and guide bar one end is connected with locking movable block, and the guide bar is kept away from locking movable block one end surface and locknut outside surface parallel and level setting, and the guide bar cooperates to the longitudinal limit of locking movable block with the guide way for locking movable block keeps away from locking spring one end surface and locknut and is close to locking bottom block or longitudinal I-steel one end surface parallel and level setting.
Preferably, the locknut is close to guide way one side surface and has seted up movable groove and spacing groove, spacing groove and movable groove parallel arrangement, and the movable groove is close to locking movable block setting, and the guide bar is kept away from locking movable block one end surface and has been seted up the rotation groove, and the inside articulated gag lever post that is provided with of rotation groove, gag lever post length is less than spacing groove or movable groove length, and gag lever post width equals spacing groove width, and the gag lever post height equals spacing groove or movable groove degree of depth, and the movable groove width is greater than locking fixed block height.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a layer of flexible galvanized steel wire rope protection net is sleeved outside the electric power grid, fragments are prevented from falling, three rows of single-layer type bailey truss sheets are arranged on two sides above the electric power grid, a layer of crown beams, transverse I-beams and longitudinal I-beams are arranged at the bottom of the electric power grid, the longitudinal I-beams and the bailey beams are vertically connected in an effective anti-loosening manner by adopting finish rolling threaded steel and locknuts, the whole body is U-shaped, the bailey beam-based steel combination system is utilized as a stressing system for hanging the electric power grid, lattice columns are longitudinally arranged on two sides of the electric power grid along with the electric power grid in a foundation pit, pile bodies below the lattice columns can serve as foundation pit anti-pulling piles or anti-sinking piles, double-splice steel cross beams are arranged between the two corresponding lattice columns as longitudinal I-beam supports, structural deformation is reduced, and simultaneously, shear supports are arranged inside the lattice columns, the integral rigidity of the lattice columns is improved, the two ends of the bailey beams are welded and fixed on pre-embedded steel plates of the crown beams of the foundation pit structure, the large-self-weight in the large-span buried high-voltage cable enclosure protection is realized by utilizing the structure, the construction system is greatly influenced by the high-span high-pressure cable enclosure protection in the construction process, the construction factor is reduced, the situation of hanging the electric power grid is easily damaged in the suspended system in the pile, the situation is greatly, the situation is convenient to be easily changed in the construction process of hanging and the construction system, and the construction is greatly is avoided in the situation of high-quality, and the construction system is convenient to be easily and easy to be convenient to be used and easy to be used and in construction and easy to be used.
2. According to the invention, the limiting rod is rotated on the surface of the rotating groove, so that the limiting rod is positioned in the movable groove, a tool is conveniently used for screwing the locknut, when the locknut is close to the lockbottom block or the longitudinal I-steel on the surface of the bailey beam, the locknut is contacted with the locknut, and the locknut rotate clockwise together, the lockinclined surface is contacted with the locknut, so that the locknut is pressed into the locknut supporting groove until the locknut is attached to the surface of the lockbottom block or the longitudinal I-steel, the lockinclined surface and the lockgroove correspondingly enter the interior of the lockgroove, the lockspring supports the locknut to be always contacted with the lockbottom block or the longitudinal I-steel, the locknut is limited by the locknut fixing block when being screwed anticlockwise, the locknut is prevented from being loosened, and the locknut is outwards supported, and the locknut and the lockinclined surface are matched to effectively prevent the locknut from loosening, so that the stability of the connection of the bailey beam and the longitudinal I-steel is increased.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at A;
FIG. 3 is a schematic view of a partially cut-away perspective structure of the present invention;
FIG. 4 is a schematic perspective view of the anti-loosening member of the present invention;
FIG. 5 is a schematic view of a front perspective view of a locknut of the present invention;
FIG. 6 is a schematic bottom perspective view of the locknut of the present invention;
fig. 7 is a schematic perspective view of the anti-loosening bottom block of the present invention.
In the figure: the steel wire rope type steel wire rope anti-loosening device comprises a bailey beam 1, finish rolling screw steel 2, a locknut 3, a steel wire rope protective net 4, an electric power calandria 5, transverse I-steel 6, a longitudinal I-steel 7, a double-spliced groove steel beam 8, a channel steel diagonal rod 9, a scissor stay 10, a bottom bracket steel plate 11, a pre-buried steel plate 12, a lattice column 13, a crown beam 14, a guard pile 15, a fixed groove 16, a locking bottom block 17, an adjusting block 18, a guide groove 19, a limiting groove 20, a movable groove 21, a guide rod 22, a limiting rod 23, a rotating groove 24, a locking spring 25, a locking jacking groove 26, a locking movable block 27, a locking groove 28, a locking fixed block 29 and a locking inclined plane 30.
Detailed Description
In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
Referring to fig. 1 to 7, the present invention provides a technical solution:
a combined type large-span buried cable suspension protection system based on a bailey beam comprises: the bailey beams 1 are arranged at two sides of the power grid 5 and are arranged in parallel with the power grid 5; the crown beam 14 is provided with two groups and is in an L-shaped structure; the fixed groove 16 is formed in the center of the top surface of the crown beam 14, two ends of the power grid 5 are positioned in the fixed groove 16, and the bailey beam 1 is positioned outside the fixed groove 16; the fender posts 15 are fixed on the bottom end surface of the crown beam 14, a plurality of groups of crown beams 14 are arranged, and one group of crown beams 14 is matched with two groups of fender posts 15; the embedded steel plates 12 are fixed on the upper end surfaces of the crown beams 14 and are positioned at two sides of the fixed grooves 16, the top end surfaces of the embedded steel plates 12 are flush with the upper end surfaces of the crown beams 14, and the bailey beams 1 and the two ends are vertically welded on the top end surfaces of the embedded steel plates 12; the outside cover of power calandria 5 is equipped with wire rope protection network 4, and wire rope protection network 4 bottom surface and fixed slot 16 bottom surface contact, and wire rope protection network 4 below is provided with collet steel sheet 11, and collet steel sheet 11 is located between two sets of crown roof beams 14, and crown roof beam 14 top surface and wire rope protection network 4 bottom surface parallel and level setting.
The invention can be further arranged that a transverse I-steel 6 is arranged below a base steel plate 11, the transverse I-steel 6 is arranged in parallel with a crown beam 14, a plurality of groups of transverse I-steels 6 are arranged and are linearly distributed by the central line of an electric power grid 5, a longitudinal I-steel 7 is arranged below the transverse I-steel 6, the longitudinal I-steel 7 is positioned right below a bailey beam 1, the longitudinal I-steel 7 is arranged in parallel with the bailey beam 1, finish rolling thread steel 2 is arranged on the surface of the bailey beam 1, the finish rolling thread steel 2 penetrates through the bailey beam 1 and the longitudinal I-steel 7, and the bailey beam 1 is connected with the longitudinal I-steel 7 through a locknut 3; the two sides of the Bailey beam 1 in the middle are provided with lattice columns 13, the top ends of the lattice columns 13 are provided with double-spliced groove steel cross beams 8, the double-spliced groove steel cross beams 8 are provided with a plurality of groups, the top end surfaces of the double-spliced groove steel cross beams 8 are flush with the bottom end surfaces of the longitudinal I-steel 7, the surfaces of the lattice columns 13 are provided with channel steel diagonal rods 9 for supporting the double-spliced groove steel cross beams 8, and a scissor brace 10 is arranged between the two groups of lattice columns 13.
The invention can be further arranged that the surface of the bailey beam 1 is provided with an anti-loosening block 17 and an adjusting block 18, the anti-loosening block 17 is positioned on the top surface of the bailey beam 1, the adjusting block 18 is positioned right below the anti-loosening block 17, the finish rolling screw steel 2 passes through the anti-loosening block 17 and is arranged with the adjusting block 18, the surface of the anti-loosening block 17 is provided with an internal thread hole which is in threaded fit with the finish rolling screw steel 2, the surface of the adjusting block 18 is provided with a through hole which is coaxially arranged with the internal thread hole on the surface of the anti-loosening block 17, and the anti-loosening block 17 is matched with the adjusting block 18 to vertically limit the finish rolling screw steel 2; the anti-loosening fixing blocks 29 are arranged on the top end surface of the anti-loosening bottom block 17 or the bottom end surface of the longitudinal I-steel 7, the anti-loosening fixing blocks 29 are of arc-shaped plate structures, the anti-loosening fixing blocks 29 are provided with a plurality of groups, the anti-loosening fixing blocks are circumferentially distributed by taking the axis of an inner threaded hole of the anti-loosening bottom block 17 as the center of a circle, anti-loosening inclined planes 30 are arranged on the surface of the anti-loosening fixing blocks 29, the anti-loosening inclined planes 30 enable the cross section of the anti-loosening fixing blocks 29 to be of a right-angle trapezoid structure, the anti-loosening inclined planes 30 are in one-to-one correspondence with the anti-loosening fixing blocks 29, and the plurality of groups of anti-loosening inclined planes 30 face clockwise.
The invention can be further arranged that the locknut 3 is sleeved on the outer side surface of the finish rolling deformed steel bar 2 and is in threaded fit with the finish rolling deformed steel bar 2, the locknut 3 is arranged above the lockbottom block 17 or below the longitudinal I-steel bar 7, one group of finish rolling deformed steel bars 2 is matched with two groups of locknuts 3, a locktop groove 26 is formed on one end surface of the locknut 3, which is close to the lockbottom block 17 or the longitudinal I-steel bar 7, the locktop groove 26 is in a ring structure, a lockspring 25 and a lockmovable block 27 are arranged in the locktop groove 26, one end of the lockspring 25 is connected with the innermost end of the locktop groove 26, and the other end of the lockspring is connected with the lockmovable block 27.
The invention can be further arranged that the surface of one end of the anti-loosening movable block 27 far away from the anti-loosening spring 25 is provided with the anti-loosening groove 28, the cross section of the anti-loosening groove 28 is in a -shaped structure, the anti-loosening groove 28 is in an arc structure, the arc inner diameter of the anti-loosening groove 28 is equal to the arc inner diameter of the anti-loosening fixed block 29, the anti-loosening grooves 28 are provided with a plurality of groups, the anti-loosening movable blocks 27 are circumferentially distributed by taking the axial lead of the anti-loosening movable block 27 as the circle center, and the anti-loosening grooves 28 are in one-to-one correspondence with the anti-loosening fixed blocks 29.
The invention can be further arranged that the outer side surface of the anti-loosening jacking groove 26 is provided with a guide groove 19, the guide groove 19 penetrates through the anti-loosening nut 3, the guide groove 19 is arranged in parallel with the axial lead of the anti-loosening jacking groove 26, the guide groove 19 is internally provided with a guide rod 22, one end of the guide rod 22 is connected with an anti-loosening movable block 27, one end surface of the guide rod 22, which is far away from the anti-loosening movable block 27, is flush with the outer side surface of the anti-loosening nut 3, and the guide rod 22 and the guide groove 19 are matched to longitudinally limit the anti-loosening movable block 27, so that one end surface of the anti-loosening movable block 27, which is far away from the anti-loosening spring 25, is flush with one end surface of the anti-loosening nut 3, which is close to the anti-loosening bottom block 17 or the longitudinal I-steel 7.
The invention can be further arranged that a movable groove 21 and a limit groove 20 are formed on the surface of one side, close to the guide groove 19, of the locknut 3, the limit groove 20 is parallel to the movable groove 21, the movable groove 21 is close to the anti-loose movable block 27, a rotary groove 24 is formed on the surface of one end, far away from the anti-loose movable block 27, of the guide rod 22, a limit rod 23 is hinged inside the rotary groove 24, the length of the limit rod 23 is smaller than the length of the limit groove 20 or the length of the movable groove 21, the width of the limit rod 23 is equal to the width of the limit groove 20, the height of the limit rod 23 is equal to the depth of the limit groove 20 or the movable groove 21, and the width of the movable groove 21 is larger than the height of the anti-loose fixed block 29.
Construction steps
The first step: crown beam construction
The crown beam at the power grid is U-shaped, the lower part of the power grid is a concave section, the two sides of the power grid are provided with bailey beam foundations, and the foundation is fixedly welded with the bailey frame by pre-buried steel plates. The crown beam at the lower part of the power grid needs to be mechanically matched with a man power to dig out the earthwork nearby the working surface. In order to prevent the power grid from being deformed when the crown beam is constructed, the length of the crown beam along the power grid is 2m towards the inner side of the foundation pit, and the power grid is supported by the disc buckle frame except the construction position of the crown beam, so that the pipeline is prevented from being deformed.
And a second step of: bailey beam mounting
Three rows of single-layer bailey beams are adopted. And (3) integrally assembling the single-row bailey frames at the upper part in the field, lifting the bailey frames to a crown beam base by using an automobile crane after the crown beam concrete reaches the design strength, and fully welding the end positions of the bailey beams with the embedded steel plates on the crown beam base after the six rows of bailey frames at the two sides are assembled and erected completely.
And a third step of: lower section steel frame
The excavation of the working face under the power grid is carried out along the longitudinal direction of the pipeline every 3 meters, the excavation depth is 1.5 meters, the steel wire rope protection net is coated on the outer side of the power grid, the steel plate, 3 transverse work 20a section steel and 4 longitudinal work 20a section steel at the lower part of the power grid are arranged in sequence from top to bottom, temporary support is carried out under the section steel by using a disc buckle frame, and the fact that gaps cannot exist between the section steel at the lower part and the power grid is noted. The vertical direction is adopted on the corresponding upper bailey frame at intervals of 1.0 meterAnd (3) hanging the longitudinal I-steel by the finish rolling threaded steel and the flat head finish rolling nut, and removing the temporary support until the lower section steel is completely erected, wherein the joint part between each two sections of erected longitudinal I-steel is fully welded.
Fourth step: pit excavation
After all the bailey beams are installed, the foundation pit excavation can be carried out after all the temporary disc buckling frames at the lower part are removed, a layered and segmented excavation mode is adopted, mechanical equipment is not required to touch a suspension system during excavation, and the erection of the cross braces and diagonal rods is carried out in time after the proper height is excavated.
A layer of flexible galvanized steel wire rope protective net 4 is sleeved outside a power grid 5 to prevent fragments from falling, three rows of single-layer type Bailey truss sheets are arranged on two sides above the power grid 5, a layer of crown beam 14, transverse I-steel 6 and longitudinal I-steel 7 are arranged at the bottom of the power grid 5, the longitudinal I-steel 7 and the Bailey beam 1 are effectively and loose-proof connected by adopting finish rolling threaded steel 2 and locknuts 3 vertically, the whole body is U-shaped, a profile steel combined system based on the Bailey beam 1 is utilized as a force-bearing system for hanging the power grid 5, lattice columns 13 are longitudinally arranged on two sides of the power grid 5 in a foundation pit, a pile body under the lattice columns 13 can be used as a foundation pit anti-pulling pile or a control pile, a double-splicing groove steel cross beam 8 is arranged between the two corresponding lattice columns 13 as a longitudinal I-steel 7 support, the structure deformation is reduced, the scissors support 10 is arranged in the lattice column 13, the overall rigidity of the lattice column 13 is improved, the two ends of the bailey beam 1 are welded and fixed on the embedded steel plates 12 of the foundation pit supporting structure crown beam 14, the structure can realize the suspension protection of large-dead weight and large-span buried high-voltage cables in a deep foundation pit, the deformation of the power grid 5 structure in the suspension process is reduced, the situation that fragments fall off to hurt people is avoided, the safety coefficient is high, meanwhile, the influence of high-voltage cable relocation on the overall construction period is avoided, the used main materials can be recycled, the cost is saved as a whole, the system is convenient to construct, the welding operation is few, mostly lap joint and bolt connection are realized, and the construction quality is easy to control.
When the lock nut 3 is needed to connect the bailey beam 1 with the longitudinal I-steel 7, the stop lever 23 rotates on the surface of the rotating groove 24, so that the stop lever 23 is positioned inside the movable groove 21, a tool is conveniently used to screw the lock nut 3, when the lock nut 3 approaches to the lock bottom block 17 on the surface of the bailey beam 1 or the longitudinal I-steel 7, the lock movable block 27 contacts with the lock fixed block 29, and the lock movable block 27 rotates clockwise together with the lock nut 3, the lock inclined surface 30 contacts with the lock movable block 27, so that the lock movable block 27 is pressed into the lock supporting groove 26 until the lock inclined surface 30 and the lock groove 28 correspondingly enter into the lock groove 28, when the lock inclined surface 30 enters into the lock groove 28, the lock nut 3 is screwed anticlockwise and then limited by the lock fixed block 29, the lock nut 3 is prevented from being loosened, the lock inclined surface 30 continues to be screwed clockwise, so that the lock inclined surface 30 contacts with the lock movable block 27 and presses into the lock supporting groove 26 until the lock bottom block 17 or the longitudinal I-steel 7, and the lock fixed block 29 is positioned inside the double groove 8, the lock nut 7 is always contacted with the lock bottom block 27, and the lock nut 3 is firmly connected with the lock nut 7, and the lock nut is firmly connected with the lock nut 7.
When the anti-loosening device is required to be disassembled, the limiting rod 23 is taken out from the inside of the movable groove 21, then the rotating groove 24 is driven to move towards the limiting groove 20 through the limiting rod 23, so that the anti-loosening movable block 27 is driven to move towards the anti-loosening spring 25 until the limiting rod 23 is placed in the limiting groove 20, the anti-loosening movable block 27 is far away from the anti-loosening fixed block 29, the anti-loosening fixed block 29 is separated from the anti-loosening groove 28, the anti-loosening limiting of the anti-loosening nut 3 is canceled, the limiting rod 23 is flush with the outer side surface of the anti-loosening nut 3, and the anti-loosening nut 3 is convenient to disassemble by a practical tool.
While the foregoing has been described in terms of illustrative embodiments thereof, so that those skilled in the art may appreciate the present application, it is not intended to be limited to the precise embodiments so that others skilled in the art may readily utilize the present application to its various modifications and variations which are within the spirit and scope of the present application as defined and determined by the appended claims.
Claims (4)
1. A combined type large-span buried cable suspension protection system based on a bailey beam is characterized in that: the combined type large-span buried cable suspension protection system based on the bailey beam comprises:
the bailey beams (1) are arranged at two sides of the power grid (5) and are arranged in parallel with the power grid (5);
the crown beam (14) is provided with two groups and is in an L-shaped structure;
the fixing groove (16) is formed in the center of the top surface of the crown beam (14), two ends of the power grid (5) are both positioned in the fixing groove (16), and the bailey beam (1) is positioned at the outer side of the fixing groove (16);
the guard piles (15) are fixed on the bottom end surfaces of the crown beams (14), a plurality of groups of crown beams (14) are arranged, and one group of crown beams (14) is matched with two groups of guard piles (15); and
The embedded steel plates (12) are fixed on the upper end surfaces of the crown beams (14) and are positioned on two sides of the fixed grooves (16), the top end surfaces of the embedded steel plates (12) are arranged flush with the upper end surfaces of the crown beams (14), and two ends of the Bailey beams (1) are vertically welded on the top end surfaces of the embedded steel plates (12);
the outer side of the power grid (5) is sleeved with a steel wire rope protection net (4), the bottom end surface of the steel wire rope protection net (4) is in contact with the bottom end surface of the fixed groove (16), a bottom support steel plate (11) is arranged below the steel wire rope protection net (4), the bottom support steel plate (11) is positioned between two groups of crown beams (14), and the top end surface of the crown beams (14) is flush with the bottom end surface of the steel wire rope protection net (4);
the steel plate is characterized in that transverse I-beams (6) are arranged below the bottom support steel plate (11), the transverse I-beams (6) are arranged in parallel with the crown beams (14), a plurality of groups of transverse I-beams (6) are arranged and are linearly distributed by the center line of the power grid (5), longitudinal I-beams (7) are arranged below the transverse I-beams (6), the longitudinal I-beams (7) are arranged right below the bailey beams (1) in parallel, finish rolling deformed steel bars (2) are arranged on the surfaces of the bailey beams (1), the finish rolling deformed steel bars (2) penetrate through the bailey beams (1) and the longitudinal I-beams (7), and the bailey beams (1) are connected with the longitudinal I-beams (7) through locknuts (3);
the two sides of the Bailey beam (1) in the middle are provided with lattice columns (13), the top ends of the lattice columns (13) are provided with double-spliced-groove steel beams (8), a plurality of groups of double-spliced-groove steel beams (8) are arranged, the top end surfaces of the double-spliced-groove steel beams (8) are flush with the bottom end surfaces of the longitudinal I-steel beams (7), the surfaces of the lattice columns (13) are provided with channel steel diagonal rods (9) for supporting the double-spliced-groove steel beams (8), and a scissor brace (10) is arranged between the two groups of lattice columns (13);
the surface of the Bailey beam (1) is provided with an anti-loosening bottom block (17) and an adjusting block (18), the anti-loosening bottom block (17) is positioned on the surface of the top end of the Bailey beam (1), the adjusting block (18) is positioned right below the anti-loosening bottom block (17), finish rolling deformed steel bars (2) penetrate through the anti-loosening bottom block (17) and the adjusting block (18), the surface of the anti-loosening bottom block (17) is provided with an internal threaded hole in threaded fit with the finish rolling deformed steel bars (2), the surface of the adjusting block (18) is provided with a through hole coaxially arranged with the internal threaded hole in the surface of the anti-loosening bottom block (17), and the anti-loosening bottom block (17) is matched with the adjusting block (18) to vertically limit the finish rolling deformed steel bars (2);
the anti-loosening fixing blocks (29) are arranged on the top end surface of the anti-loosening bottom block (17) or the bottom end surface of the longitudinal I-steel (7), the anti-loosening fixing blocks (29) are of arc-shaped plate structures, a plurality of groups of anti-loosening fixing blocks (29) are arranged, the anti-loosening fixing blocks are circumferentially distributed by taking the axis line of an inner threaded hole of the anti-loosening bottom block (17) as the center of a circle, anti-loosening inclined planes (30) are arranged on the surface of the anti-loosening fixing block (29), the cross section of the anti-loosening fixing block (29) is of a right-angle trapezoid structure, the anti-loosening inclined planes (30) are in one-to-one correspondence with the anti-loosening fixing blocks (29), and the plurality of groups of anti-loosening inclined planes (30) face clockwise;
the anti-loosening screw is characterized in that the anti-loosening screw (3) is sleeved on the outer side surface of the finish-rolled screw steel (2) and is in threaded fit with the finish-rolled screw steel (2), the anti-loosening screw (3) is arranged above the anti-loosening bottom block (17) or below the longitudinal I-steel (7), one group of the finish-rolled screw steels (2) are matched with two groups of the anti-loosening screws (3), the anti-loosening screw (3) is close to one end surface of the anti-loosening bottom block (17) or the longitudinal I-steel (7), the anti-loosening top groove (26) is of an annular structure, an anti-loosening spring (25) and an anti-loosening movable block (27) are arranged inside the anti-loosening top groove (26), one end of the anti-loosening spring (25) is connected with the innermost end of the anti-loosening top groove (26), and the other end of the anti-loosening spring is connected with the anti-loosening movable block (27).
2. The bailey beam-based combined large-span buried cable suspension protection system of claim 1, wherein: the anti-loosening movable block (27) is far away from the surface of one end of the anti-loosening spring (25), an anti-loosening groove (28) is formed, the cross section of the anti-loosening groove (28) is of a -shaped structure, the anti-loosening groove (28) is of an arc-shaped structure, the arc inner diameter of the anti-loosening groove (28) is equal to that of the anti-loosening fixed block (29), the anti-loosening grooves (28) are provided with a plurality of groups, the anti-loosening movable blocks (27) are circumferentially distributed by taking the axial lead of the anti-loosening movable block (27) as the circle center, and the anti-loosening grooves (28) are in one-to-one correspondence with the anti-loosening fixed blocks (29).
3. The bailey beam-based combined large-span buried cable suspension protection system of claim 2, wherein: guide slot (19) have been seted up to locking roof groove (26) outside surface, guide slot (19) run through locknut (3) setting, and guide slot (19) and locking roof groove (26) axial lead parallel arrangement, guide slot (19) inside is provided with guide bar (22), and guide bar (22) one end is connected with locking movable block (27), guide bar (22) are kept away from locking movable block (27) one end surface and locknut (3) outside surface parallel and level setting, and guide bar (22) cooperate to locking movable block (27) longitudinal limit with guide slot (19), make locking movable block (27) keep away from locking spring (25) one end surface and locknut (3) be close to locking bottom block (17) or longitudinal I steel (7) one end surface parallel and level setting.
4. A bailey beam based modular large span buried cable suspension protection system as recited in claim 3 wherein: locknut (3) are close to guide way (19) one side surface and have seted up movable groove (21) and spacing groove (20), spacing groove (20) and movable groove (21) parallel arrangement, and movable groove (21) are close to locking movable block (27) setting, guide bar (22) are kept away from locking movable block (27) one end surface and have been seted up rotary groove (24), and rotary groove (24) inside articulated are provided with gag lever post (23), gag lever post (23) length is less than spacing groove (20) or movable groove (21) length, and gag lever post (23) width equals spacing groove (20) width, gag lever post (23) height equals spacing groove (20) or movable groove (21) degree of depth, and movable groove (21) width is greater than locking fixed block (29) height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210881704.9A CN115149488B (en) | 2022-07-26 | 2022-07-26 | Combined type large-span buried cable suspension protection system based on bailey beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210881704.9A CN115149488B (en) | 2022-07-26 | 2022-07-26 | Combined type large-span buried cable suspension protection system based on bailey beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115149488A CN115149488A (en) | 2022-10-04 |
| CN115149488B true CN115149488B (en) | 2024-03-29 |
Family
ID=83414301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210881704.9A Active CN115149488B (en) | 2022-07-26 | 2022-07-26 | Combined type large-span buried cable suspension protection system based on bailey beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115149488B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115506616A (en) * | 2022-10-26 | 2022-12-23 | 北京城乡建设集团有限责任公司 | Underground high-voltage wire penetrating subway open excavation foundation pit protection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6920736U (en) * | 1969-06-22 | 1969-10-30 | Ton Stein Und Chamotte Ind Gmb | LONGITUDINAL ASSEMBLY CHANNEL PARTS MADE OF PLASTIC |
| CN2921414Y (en) * | 2006-06-05 | 2007-07-11 | 吴健 | Locking bolt |
| EP2922163A1 (en) * | 2014-03-17 | 2015-09-23 | Draka Comteq B.V. | Container for holding at least a part of a cable or cables underground, method of installing a part of a network, and communications network |
| CN205298214U (en) * | 2015-12-03 | 2016-06-08 | 天津诚强机械制造有限公司 | Self -locking screw nut |
| CN109972623A (en) * | 2019-03-22 | 2019-07-05 | 陕西铁路工程职业技术学院 | A kind of construction method and device carrying out pipeline suspension using Bailey beam |
| CN211449343U (en) * | 2019-12-31 | 2020-09-08 | 北京洋生科技有限公司 | Tooth-shaped locknut assembly |
| CN215580291U (en) * | 2021-07-21 | 2022-01-18 | 中国葛洲坝集团市政工程有限公司 | Large-span ultrahigh-voltage power pipe trench suspension device in foundation pit |
-
2022
- 2022-07-26 CN CN202210881704.9A patent/CN115149488B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6920736U (en) * | 1969-06-22 | 1969-10-30 | Ton Stein Und Chamotte Ind Gmb | LONGITUDINAL ASSEMBLY CHANNEL PARTS MADE OF PLASTIC |
| CN2921414Y (en) * | 2006-06-05 | 2007-07-11 | 吴健 | Locking bolt |
| EP2922163A1 (en) * | 2014-03-17 | 2015-09-23 | Draka Comteq B.V. | Container for holding at least a part of a cable or cables underground, method of installing a part of a network, and communications network |
| CN205298214U (en) * | 2015-12-03 | 2016-06-08 | 天津诚强机械制造有限公司 | Self -locking screw nut |
| CN109972623A (en) * | 2019-03-22 | 2019-07-05 | 陕西铁路工程职业技术学院 | A kind of construction method and device carrying out pipeline suspension using Bailey beam |
| CN211449343U (en) * | 2019-12-31 | 2020-09-08 | 北京洋生科技有限公司 | Tooth-shaped locknut assembly |
| CN215580291U (en) * | 2021-07-21 | 2022-01-18 | 中国葛洲坝集团市政工程有限公司 | Large-span ultrahigh-voltage power pipe trench suspension device in foundation pit |
Non-Patent Citations (2)
| Title |
|---|
| 白旭军 ; .贝雷桁架在地铁施工管线保护中的应用.科技情报开发与经济.2010,(第17期),全文. * |
| 贝雷桁架在地铁施工管线保护中的应用;白旭军;;科技情报开发与经济(第17期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115149488A (en) | 2022-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115149488B (en) | Combined type large-span buried cable suspension protection system based on bailey beam | |
| CN111472530A (en) | Flower basket pull rod I-shaped steel cantilever bearing frame for constructional engineering and mounting method thereof | |
| CN214883687U (en) | Foundation pit supporting structure | |
| CN109879179B (en) | Assembled steel construction tower crane platform | |
| CN116181112A (en) | Method for dismantling and installing large-span roof and grid steel structure | |
| CN207905104U (en) | A kind of assembled architecture truss structure | |
| CN115492415A (en) | High-safety temporary door opening reinforcing and supporting method | |
| CN212715876U (en) | Socket type disc buckle type steel pipe support | |
| CN113137102A (en) | Assembled type warehouse roof structure and installation method thereof | |
| CN217399430U (en) | Device is assembled to preloading arch bridge support normal position of exempting from to pile | |
| CN112302028A (en) | A guider that is used for double-walled steel cofferdam to transfer location | |
| CN219973823U (en) | Construction scaffold erecting system | |
| CN220827815U (en) | Supporting structure of foundation pit | |
| CN217028157U (en) | Turnover assembly type base device for jacking steel net rack | |
| CN115095226B (en) | Light high-large fence and erection method | |
| CN219137740U (en) | Adjustable support protection device for sensitive pipeline in foundation pit | |
| CN214329793U (en) | Steel platform for repairing travelling crane | |
| CN219080347U (en) | Foundation pit supporting device for building engineering construction | |
| CN220847108U (en) | Cast-in-situ bracket platform | |
| CN218406713U (en) | Can have enough to meet need formula to encorbelment gazebo suitable for deep basal pit building | |
| CN220888620U (en) | Sectional type column pile steel column | |
| CN217651874U (en) | Supporting device for reinforcing and protecting tower crane foundation protection wall | |
| CN217710803U (en) | Anti-floating reinforcing comprehensive treatment system for underground garage foundation | |
| CN216360732U (en) | Upward-inclined steel plate retaining wall and supporting system | |
| CN217759593U (en) | Canopy steel structure construction structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |