CN117904944A - Steel structure truss for road and bridge engineering and safety detection method - Google Patents
Steel structure truss for road and bridge engineering and safety detection method Download PDFInfo
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- CN117904944A CN117904944A CN202410318267.9A CN202410318267A CN117904944A CN 117904944 A CN117904944 A CN 117904944A CN 202410318267 A CN202410318267 A CN 202410318267A CN 117904944 A CN117904944 A CN 117904944A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 230000008093 supporting effect Effects 0.000 claims abstract description 137
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 238000005452 bending Methods 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000007689 inspection Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The invention relates to the field of bridge engineering, and discloses a steel structure truss for road and bridge engineering and a safety detection method, which comprise a supporting mechanism arranged on a bridge pier, a first bridge plate body and a second bridge plate body which are arranged on a bridge, wherein the supporting mechanism is respectively supported on the lower end surfaces of the first bridge plate body and the second bridge plate body, the supporting mechanism is arranged at a hinge mechanism or a movable part of the bridge so as to form flexible connection with the bridge, the bridge is not broken when swaying and bending, the safety of the integral structure is not affected, the supporting beam is embedded into the second bridge plate body, and when the second bridge plate body moves and bends, the pressure can be accurately transmitted, and the supporting beam can be effectively prevented from being separated from a contact state with the second bridge plate body, so that the stability of the connection between the supporting beam and the second bridge plate body is further improved.
Description
Technical Field
The invention relates to the field of bridge engineering, in particular to a steel structure truss for road and bridge engineering and a safety detection method.
Background
The steel structure truss in road and bridge engineering is an important structural form, is widely applied to various large bridges and road engineering, has the advantages of high strength, light weight, easiness in processing and installation and the like, and is widely applied to modern bridge construction, the steel structure truss is a space structure formed by connecting a plurality of steel rods through nodes, the shape of the steel structure truss can be triangle, quadrangle or other polygons, and in bridge engineering, the steel structure truss is generally applied to parts such as main beams, bridge piers, cable-stayed bridges and the like and bears the functions of dead weight, vehicle load, wind load and the like of the bridge;
The existing steel structure truss applied to road and bridge engineering is generally fixed and connected by means of cooperation among rivets, bolts and main frames, the connecting and fixing mode is only suitable for bridges with smaller traffic flow, like cross-sea bridges or multi-lane bridges, the traffic flow to be borne is huge, in order to enable the bridges to be adaptively bent along with the traffic flow, hinge mechanisms are arranged on the surfaces of the bridges at equal intervals, and the truss body which is installed through hard connection is easy to bear more traffic flow on the bridges and is bent on the surfaces of the bridges, so that the truss body is broken and deformed due to extrusion or pulling, and the safety of the bridge body is affected.
Disclosure of Invention
The invention provides a steel structure truss for road and bridge engineering and a safety detection method, which overcome the defects described in the background technology.
The technical scheme adopted for solving the technical problems is as follows:
The steel structure truss comprises a supporting mechanism arranged on a bridge pier, a first bridge plate body and a second bridge plate body which are arranged on a bridge, wherein the supporting mechanism is respectively supported on the lower end surfaces of the first bridge plate body and the second bridge plate body;
The bridge pier surface is provided with an inwardly concave pressure-equalizing positioning groove, the supporting mechanism is arranged in the pressure-equalizing positioning groove, a movable gap exists between the left side and the right side of the lower part of the supporting mechanism and the surface of the pressure-equalizing positioning groove, the middle part of the pressure-equalizing positioning groove is provided with a pressure-equalizing supporting body which penetrates through the supporting mechanism, and the pressure-equalizing supporting body penetrates through the supporting mechanism and then is respectively propped against the first bridge plate body and the second bridge plate body;
The supporting mechanism comprises a bearing block and supporting groups symmetrically arranged on the left side and the right side of the bearing block, a flaring structure is formed by supporting, one end with a large caliber faces to the first bridge plate body and the second bridge plate body, the upper ends of the supporting groups respectively prop against the lower sides of the first bridge plate body and the second bridge plate body, the front side and the rear side of the bearing block are obliquely provided with a hydraulic supporting roller, and each hydraulic supporting roller is respectively connected with the first bridge plate body and the second bridge plate body through a connecting shaft body;
the upper surface and the lower surface of the supporting group are respectively provided with a supporting part protruding outwards, and the supporting parts positioned at the lower side are embedded into the pressure equalizing positioning grooves;
The front side and the rear side of each supporting group are respectively propped against the upper end face of the pier through a supporting piece, and the middle part of the supporting piece is in an arc-shaped outline to the upper part of the supporting piece.
A preferred technical scheme is as follows: the support group comprises support beams which are symmetrically arranged, the support beams consist of an upper plate, side plates and a bottom plate, the upper plate is connected with the bottom plate through the side plates, the side plates are obliquely arranged, and the bottom plates in the front support beam and the rear support beam are mutually close to each other;
The connecting end of the upper plate and the side plate is provided with a tubular hole and a first deformation notch, the tubular hole extends to the outer side of the supporting beam through the first deformation notch, the first deformation notch is of a flaring structure, and one small-caliber end of the first deformation notch is communicated with the tubular hole.
A preferred technical scheme is as follows: the thickness of the bottom plates is gradually reduced from the middle part to the outer side to form a movable gap between the supporting mechanism and the pressure equalizing positioning groove, and the adjacent surfaces of the front bottom plate and the rear bottom plate are respectively provided with a second deformation notch, and the two second deformation notches form a deformation groove;
the second deformation notch extends downwards from the middle part of the side face of the bottom plate to the edge, and the width of the deformation groove gradually increases from top to bottom.
A preferred technical scheme is as follows: the two sides of the bearing block are respectively provided with a clamping groove, the surfaces of the supporting beams on the two sides are respectively provided with a corresponding positioning plate body, when the supporting beams are arranged on the two sides of the bearing block, the positioning plate bodies are embedded into the clamping grooves, and the lower end surfaces of the clamping grooves are inclined surfaces so as to form gaps for the positioning plate bodies to swing between the positioning plate bodies and the clamping grooves.
A preferred technical scheme is as follows: the supporting piece comprises a shell and a movable piece, wherein a sliding groove for installing the movable piece is formed in the shell, the movable piece is inserted into the sliding groove through a connecting block, the surface of the connecting block is provided with a sliding groove, a corresponding clamping block is arranged in the sliding groove, and the clamping block is embedded into the sliding groove;
A movable space is formed between the connecting block and the clamping block, the connecting block is connected with the clamping block through a piston, and when the movable piece moves downwards, air in the movable space is extruded through the connecting block.
A preferred technical scheme is as follows: the upper end of pier still symmetry installs two safety inspection cylinders, and two safety inspection cylinders offset with first bridge plate body, second bridge plate body respectively, the safety inspection cylinder includes outer body, piston rod, laser level, air pressure detector, be equipped with the tubular movable groove in the outer body, the piston rod is from outside to interior tubular movable inslot, and forms piston connection with it, the lower extreme in tubular movable groove is linked together with air pressure detector's output, and installs the spring in the tubular movable groove, and the piston rod upper end offsets with the lower terminal surface of second bridge plate body through a ball, and the laser level is installed in the piston rod upper end.
The safety detection method is realized through a safety detection cylinder, when a second bridge plate body arranged on a bridge swings downwards slightly along with the increase of the weight of the bridge, a piston rod is extruded to move downwards, air in a tubular movable groove is discharged into an air pressure detector, the downward movement depth of the piston rod is obtained through detecting the air pressure in the air pressure detector, and the downward bending degree of the bridge surface is detected through a laser level.
Compared with the prior art, the technical scheme has the following advantages:
The supporting group in the invention can be understood as a connector and a supporting object between the bridge pier and the bridge body in the prior art, but it is necessary to explain that the construction and the installation of the bridge are not all supported by the supporting group, but in order to provide sufficient supporting effect for the bridge, the bridge is only installed and supported at the hinge mechanism or the movable end on the bridge, and other positions of the bridge can not be changed, the bridge is directly supported by the bridge pier, the hinge mechanism or the movable position of the bridge is provided with the supporting mechanism for forming soft connection with the bridge, the bridge is not broken when being rocked or bent, the safety of the integral structure is not affected, the supporting beam is embedded into the second bridge plate body, the pressure can be accurately transmitted when the second bridge plate body is moved or bent, the supporting beam is effectively prevented from being separated from the abutting state of the second bridge plate body, and the connection stability between the two is further increased.
In order to avoid the problem of uneven stress in the supporting beam, the thickness of the bottom plates is gradually reduced from the outside to form a movable gap between the supporting mechanism and the pressure equalizing positioning groove, two adjacent surfaces of the front bottom plate and the rear bottom plate are respectively provided with one deformation groove, the adjacent surfaces of the two bottom plates are mutually abutted along with the inclination of the bottom plates, and the bottom plates are matched with the pressure equalizing positioning groove to form limit after being stressed, so that the whole supporting beam is prevented from displacing along with the downward movement and the shaking of the second bridge plate body, and the whole safety quality is prevented from being influenced.
When the movable piece moves downwards, the movable piece extrudes air in the movable space through the connecting block, the supporting piece is used for supporting the first bridge plate body and the second bridge plate body, when the first bridge plate body or the second bridge plate body moves downwards, the supporting piece is extruded, and the connecting block in the supporting piece is connected with the clamping block through the piston, so that when the connecting block gradually penetrates into the sliding groove, the space in the sliding groove is extruded, buffering is formed in a compressed air mode, and the first bridge plate body or the second bridge plate body is continuously supported in an abutting mode in a soft connection mode.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the supporting mechanism.
Fig. 3 is an exploded view of the support mechanism.
Fig. 4 is a schematic view of the supporting mechanism at different angles.
Fig. 5 is a schematic view of a support beam.
Fig. 6 is a schematic view of a support.
Fig. 7 is a schematic diagram of a safety monitoring cylinder.
In the figure: the device comprises a supporting mechanism 1, a supporting beam 11, an upper plate 11a, a side plate 11b, a bottom plate 11c, a positioning plate body 111, a tubular hole 112, a first deformation notch 113, a second deformation notch 114, a bearing block 12, a hydraulic supporting roller 121, a connecting shaft body 1211, a clamping groove 122, a supporting piece 13, a shell 131, a clamping block 1311, a movable piece 132, a connecting block 1321, a sliding groove 1322, a safety detection cylinder 14, an outer tube body 141, a piston rod 142, a ball 1421, a laser level 143 and an air pressure detector 144;
a first bridge plate body 2;
A second bridge plate 3;
pier a, pressure equalizing constant head tank a1, pressure equalizing support body a2.
Detailed Description
As shown in fig. 1 to 6, a steel structure truss for road and bridge engineering includes a supporting mechanism 1 installed on a bridge pier a, and a first bridge plate 2 and a second bridge plate 3 installed on the bridge, where the supporting mechanism 1 is respectively supported on the lower end surfaces of the first bridge plate 2 and the second bridge plate 3, and it is to be explained in advance that the steel structure truss in the present invention is spliced and installed together with the bridge when the bridge is built, and the steel structure truss in the present invention can be understood as a structure and a device installed between the bridge pier a and the bridge, and the first bridge plate 2 and the second bridge plate 3 forming the hinge mechanism in the background art in the bridge are supported by the present invention, so that the bridge can be supported by the supporting mechanism 1 when the bridge is subjected to a large traffic flow and bent downward, and meanwhile, the steel structure truss in the present invention is designed to form a soft connection with the first bridge plate 2 and the second bridge plate 3, so as to avoid the situation that the bridge is damaged due to the bridge, such as to the steel truss being torn and the steel truss is extruded when the bridge is bent downward.
In order to realize the corresponding functions and solve the corresponding problems, the steel structure truss in the invention is designed as follows, and the steel structure truss is described one by one as follows:
Because the supporting mechanism 1 is arranged on the bridge pier a, in order to ensure that the bridge pier a and the supporting mechanism 1 can form more stable connection, the surface of the bridge pier a is provided with the internally sunken pressure equalizing and positioning groove a1, the supporting mechanism 1 is arranged in the pressure equalizing and positioning groove a1, a movable gap exists between the left side and the right side of the lower part of the supporting mechanism 1 and the surface of the pressure equalizing and positioning groove a1, and the purpose of arranging the movable gap is to ensure that a certain deformation space can be provided when the supporting mechanism 1 is extruded and bent by a pressed bridge, and the supporting mechanism 1 has a certain deformation capacity under the condition of ensuring the supporting effect on the first bridge plate body 2 and the second bridge plate body 3, so that the technical problems as described in the background technology are avoided in the process of supporting the first bridge plate body 2 and the second bridge plate body 3 by the supporting mechanism 1;
And, the middle part of the pressure equalizing positioning groove a1 is provided with a pressure equalizing support body a2 which penetrates through the supporting mechanism 1, the pressure equalizing support body a2 respectively abuts against the first bridge plate body 2 and the second bridge plate body 3 after penetrating through the supporting mechanism 1, the first bridge plate body 2 and the second bridge plate body 3 are supported by the pressure equalizing support body a2, and as shown in fig. 2 and 3, one side edge of the upper end of the pressure equalizing support body a2, which is close to the second bridge plate body 3, is provided with a chamfer angle, so that the upper edge of the pressure equalizing support body a2 or the lower edge of the second bridge plate body 3 is not directly extruded when the second bridge plate body 3 bends along with the downward movement of weight, and the pressure equalizing support body a2 or the lower edge of the second bridge plate body 3 is sunken to rupture and the like.
The supporting mechanism 1 comprises a bearing block 12 and supporting groups symmetrically arranged at the left side and the right side of the bearing block 12, the supporting groups form a flaring structure, one large-caliber end faces the first bridge plate body 2 and the second bridge plate body 3, the upper ends of the supporting groups respectively prop against the lower sides of the first bridge plate body 2 and the second bridge plate body 3, the front side and the rear side of the bearing block 12 are respectively provided with a hydraulic supporting roller 121 in an inclined way, each hydraulic supporting roller 121 is respectively connected with the first bridge plate body 2 and the second bridge plate body 3 through a connecting shaft 1211, the upper surface and the lower surface of each supporting group are respectively provided with a supporting part protruding outwards, the supporting parts positioned at the lower side are embedded into the equalizing and positioning groove a1, the front side and the rear side of each supporting group respectively prop against the upper end face of the bridge pier a through a supporting piece 13, the middle part to the upper part of the supporting piece 13 is in an arc-shaped profile, as can be seen from this, the supporting mechanism 1 of the present invention can install the bearing blocks 12 into the pressure equalizing and positioning groove a1, then install the supporting groups on both sides of the bearing blocks 12 in turn, then install the first bridge plate 2 and the second bridge plate 3, let the supporting groups support the first bridge plate 2 and the second bridge plate 3, and expect supporting effect together after installing the hydraulic supporting rollers 121, while the supporting groups of the present invention can be understood as connectors and supports between the bridge pier and the bridge body in the prior art, and it is necessary to explain that the bridge is not supported by all bridge piers through the supporting groups in order to give the bridge sufficient supporting effect, so that only the hinge mechanism or the movable end on the bridge is installed and supported, and other positions of the bridge can be unchanged, the bridge pier a is used for supporting directly, and the support mechanism 1 is arranged at the hinge mechanism or the movable part of the bridge so as to form flexible connection with the bridge, so that the bridge is prevented from breaking when shaking and bending, and the safety of the whole structure is affected;
And as shown in fig. 2, the supporting beam 11 is embedded in the second bridge plate body 3, when the second bridge plate body 3 moves and bends, the pressure can be accurately transmitted, and the supporting beam 11 can be effectively prevented from being separated from the abutting state with the second bridge plate body 3, so that the connection stability between the two is further improved.
Further, the supporting group comprises supporting beams 11 symmetrically arranged, the supporting beams 11 are composed of an upper plate 11a, a side plate 11b and a bottom plate 11c, the upper plate 11a is connected with the bottom plate 11c through the side plate 11b, the side plates 11b are obliquely arranged, the bottom plates 11c in the front supporting beam 11 and the rear supporting beam 11 are mutually close to each other, in order to enable the supporting beams 11 to be better stressed to deform and support the bridge when the bridge shakes and bends, the connecting ends of the upper plate 11a and the side plates 11b are provided with tubular holes 112 and first deformation notches 113, the tubular holes 112 extend to the outer sides of the supporting beams 11 through the first deformation notches 113, the first deformation notches 113 are in a flaring structure, small-caliber ends of the first deformation notches 113 are communicated with the tubular holes 112, when the upper plate 11a is extruded along with the bending of the second bridge plate body 3, the tubular holes 112 can be stressed effectively, the upper plate 11a can be slightly inclined downwards by taking the tubular holes 112 as supporting points, and the supporting beams 11a can be kept to be inclined downwards on the second bridge body at all moment, and the whole supporting plates 11b can be deformed downwards along with the bending of the second bridge body, and the upper plate 11b can be inclined along with the bending effect of the upper plate 11 b;
In order to avoid the problem of uneven stress in the supporting beam 11, the thickness of the bottom plate 11c is gradually reduced from the outside to form a movable gap between the supporting mechanism 1 and the pressure equalizing and positioning groove a1, and the adjacent surfaces of the front bottom plate 11c and the rear bottom plate 11c are respectively provided with a second deformation notch 114, the two second deformation notches 114 form a deformation groove, the second deformation notch 114 extends downwards from the middle part to the edge of the side surface of the bottom plate 11c, and the width of the deformation groove is gradually increased from top to bottom, by adopting the design, when the upper plate 11a is pressed by the second bridge plate body 3, the side plate 11b and the bottom plate 11c are pressed together, the bottom plate 11c is inclined along with the downward pressing of the second bridge plate body 3 by taking the middle part as a fulcrum, and the second deformation notches 114 of the adjacent surfaces of the two bottom plates 11c are mutually abutted along with the inclination of the bottom plate 11c, and the purpose of the arrangement is to prevent the supporting beam 11c from forming limit by matching with the positioning groove a1 after the stress, and the supporting beam 11 is prevented from being integrally moved along with the second bridge plate body 3, the bottom plate body is in a stable shape, and the bottom plate 11c is in a state of being contacted with the second bridge body 3, and the bottom plate 11c is in a stable shape, and the shape is in a state, and the shape of the bottom plate 11 is not contacted with the bottom plate 11c is formed, and the bottom plate is in a stable, and has a stable shape.
In order to increase the connection stability between the support beam 11 and the bearing block 12 and avoid the support beam 11 from being excessively deformed due to extrusion, the invention needs to limit the movement distance of the support beam 11 by the bearing block 12, so that two sides of the bearing block 12 in the invention are respectively provided with a clamping groove 122, and the surfaces of the support beams 11 on two sides are respectively provided with a corresponding positioning plate 111, when the support beam 11 is installed on two sides of the bearing block 12, the positioning plate 111 is embedded into the clamping groove 122, and the lower end surface of the clamping groove 122 is an inclined surface to form a gap for swinging the positioning plate 111 between the positioning plate 111 and the clamping groove 122.
The supporting member 13 includes a housing 131 and a movable member 132, a sliding groove for installing the movable member 132 is provided in the housing 131, the movable member 132 is inserted into the sliding groove through a connecting block 1321, a sliding groove 1322 is provided on the surface of the connecting block 1321, and a corresponding clamping block 1311 is provided in the sliding groove, the clamping block 1311 is embedded into the sliding groove 1322, a movable space is provided between the connecting block 1321 and the clamping block 1311, the connecting block 1321 is in piston connection with the clamping block 1311, when the movable member 132 moves downward, the air in the movable space is compressed through the connecting block 1321, so that the supporting member 13 is understood to be used for supporting the first bridge plate 2 and the second bridge plate 3, when the first bridge plate 2 or the second bridge plate 3 moves downward, the supporting member 13 is compressed, and the connecting block 1321 and the clamping block 1311 form piston connection, when the connecting block 1321 gradually presses the space in the sliding groove, and forms a soft way, and the buffer connection is formed, and the first bridge plate 2 or the second bridge plate 3 is continuously connected in a deep way.
The upper end of the bridge pier a is symmetrically provided with two safety detection cylinders 14, the two safety detection cylinders 14 are respectively propped against the first bridge plate body 2 and the second bridge plate body 3, the safety detection cylinder 14 comprises an outer pipe body 141, a piston rod 142, a laser level 143 and an air pressure detector 144, a tubular movable groove is arranged in the outer pipe body 141, the piston rod 142 is inserted into the tubular movable groove from outside to inside and is connected with the piston, the lower end of the tubular movable groove is communicated with the output end of the air pressure detector 144, a spring is arranged in the tubular movable groove, the upper end of the piston rod 142 is propped against the lower end face of the second bridge plate body 3 through a ball 1421, and the laser level 143 is arranged at the upper end of the piston rod 142;
based on the above, the present invention also provides a safety detection method for a steel truss based on road and bridge engineering, which is implemented by the safety detection cylinder 14, and when the second bridge plate 3 installed on the bridge swings slightly downward with the weight of the bridge, the piston rod 142 is extruded to move downward, so that the air in the tubular movable groove is discharged into the air pressure detector 144, the downward movement depth of the piston rod 142 is known by detecting the air pressure in the air pressure detector 144, and the degree of downward bending of the bridge surface is detected by the laser level 143;
And when installing safety monitoring cylinder 14, need not all install safety monitoring cylinder 14 on pier a, only need install on pier a on the head and the tail both ends of bridge can, alright detect the deepest section of bridge downwarping.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and therefore should not be taken as limiting the scope of the invention, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.
Claims (7)
1. The steel structure truss for road and bridge engineering is characterized by comprising a supporting mechanism (1) arranged on a bridge pier (a), a first bridge plate body (2) and a second bridge plate body (3) arranged on a bridge, wherein the supporting mechanism (1) is respectively supported on the lower end surfaces of the first bridge plate body (2) and the second bridge plate body (3);
the bridge pier (a) surface is provided with an inwardly concave pressure equalizing and positioning groove (a 1), the supporting mechanism (1) is arranged in the pressure equalizing and positioning groove (a 1), a movable gap exists between the left side and the right side of the lower part of the supporting mechanism (1) and the surface of the pressure equalizing and positioning groove (a 1), the middle part of the pressure equalizing and positioning groove (a 1) is provided with a pressure equalizing supporting body (a 2) penetrating through the supporting mechanism (1), and the pressure equalizing supporting body (a 2) penetrates through the supporting mechanism (1) and then is respectively propped against the first bridge plate body (2) and the second bridge plate body (3);
the supporting mechanism (1) comprises a bearing block (12) and supporting groups symmetrically arranged on the left side and the right side of the bearing block (12), a flaring structure is formed by supporting, one end with a large caliber faces to a first bridge plate body (2) and a second bridge plate body (3), the upper ends of the supporting groups respectively prop against the lower sides of the first bridge plate body (2) and the second bridge plate body (3), a hydraulic supporting roller (121) is obliquely arranged on the front side and the rear side of the bearing block (12), and each hydraulic supporting roller (121) is respectively connected with the first bridge plate body (2) and the second bridge plate body (3) through a connecting shaft body (1211);
the upper and lower surfaces of the supporting group are respectively provided with a supporting part protruding outwards, and the supporting parts positioned at the lower side are embedded into the pressure equalizing positioning groove (a 1);
The front side and the rear side of each supporting group are respectively propped against the upper end face of the pier (a) through a supporting piece (13), and the middle part to the upper part of the supporting piece (13) are in arc-shaped outlines.
2. The steel structure truss for road and bridge engineering according to claim 1, wherein the supporting group comprises symmetrically arranged supporting beams (11), the supporting beams (11) are composed of an upper plate (11 a), side plates (11 b) and a bottom plate (11 c), the upper plate (11 a) is connected with the bottom plate (11 c) through the side plates (11 b), the side plates (11 b) are obliquely arranged, and the bottom plates (11 c) in the front supporting beam and the rear supporting beam (11) are mutually close to each other;
The connecting end of the upper plate (11 a) and the side plate (11 b) is provided with a tubular hole (112) and a first deformation notch (113), the tubular hole (112) extends to the outer side of the supporting beam (11) through the first deformation notch (113), the first deformation notch (113) is of a flaring structure, and one small-caliber end of the first deformation notch (113) is communicated with the tubular hole (112).
3. The steel truss of road and bridge engineering according to claim 2, wherein the thickness of the bottom plate (11 c) is gradually reduced from the middle to the outer side to form a movable gap between the supporting mechanism (1) and the equalizing positioning groove (a 1), and the adjacent surfaces of the front bottom plate and the rear bottom plate (11 c) are respectively provided with a second deformation notch (114), and the two second deformation notches (114) form a deformation groove;
the second deformation notch (114) extends downwards from the middle of the side face of the bottom plate (11 c) to the edge, and the width of the deformation groove gradually increases from top to bottom.
4. The steel truss of road and bridge engineering according to claim 2, wherein two sides of the bearing block (12) are respectively provided with a clamping groove (122), and the surfaces of the supporting beams (11) on two sides are respectively provided with a corresponding positioning plate body (111), when the supporting beams (11) are installed on two sides of the bearing block (12), the positioning plate bodies (111) are embedded into the clamping grooves (122), and the lower end surfaces of the clamping grooves (122) are inclined surfaces to form a gap for swinging the positioning plate bodies (111) between the positioning plate bodies (111) and the clamping grooves (122).
5. A steel truss for road and bridge construction according to any one of claims 1-4, characterized in that the supporting member (13) comprises a housing (131) and a movable member (132), wherein a chute for mounting the movable member (132) is provided in the housing (131), the movable member (132) is inserted into the chute through a joint block (1321), the surface of the joint block (1321) is provided with a sliding groove (1322), and a corresponding clamping block (1311) is provided in the chute, and the clamping block (1311) is embedded into the sliding groove (1322);
A movable space exists between the connecting block (1321) and the clamping block (1311), the connecting block (1321) is connected with the clamping block (1311) in a piston mode, and when the movable piece (132) moves downwards, air in the movable space is extruded through the connecting block (1321).
6. The steel structure truss for road and bridge engineering according to claim 5, wherein the upper end of the bridge pier (a) is further symmetrically provided with two safety detection cylinders (14), the two safety detection cylinders (14) are respectively propped against the first bridge plate body (2) and the second bridge plate body (3), the safety detection cylinders (14) comprise an outer pipe body (141), a piston rod (142), a laser level (143) and a gas pressure detector (144), a tubular movable groove is arranged in the outer pipe body (141), the piston rod (142) is inserted into the tubular movable groove from outside to inside and forms a piston connection with the tubular movable groove, the lower end of the tubular movable groove is connected with the output end of the gas pressure detector (144), a spring is arranged in the tubular movable groove, the upper end of the piston rod (142) is propped against the lower end face of the second bridge plate body (3) through a ball (1421), and the laser level (143) is arranged at the upper end of the piston rod (142).
7. A safety detection method of a steel structure truss based on road and bridge engineering according to claim 6, wherein the safety detection method is realized by a safety detection cylinder (14), when a second bridge plate body (3) installed on a bridge swings downwards slightly along with the weight increase of the bridge, a piston rod (142) is extruded to move downwards, air in a tubular movable groove is discharged into an air pressure detector (144), the downward movement depth of the piston rod (142) is known by detecting the air pressure in the air pressure detector (144), and the downward bending degree of the bridge surface is detected by a laser level gauge (143).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410318267.9A CN117904944B (en) | 2024-03-20 | 2024-03-20 | Steel structure truss for road and bridge engineering and safety detection method |
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| CN202410318267.9A CN117904944B (en) | 2024-03-20 | 2024-03-20 | Steel structure truss for road and bridge engineering and safety detection method |
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| CN117904944A true CN117904944A (en) | 2024-04-19 |
| CN117904944B CN117904944B (en) | 2024-05-31 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1202302B (en) * | 1960-02-27 | 1965-10-07 | Rheinstahl Gmbh Wanheim | Steel bridge with seamless reinforced concrete deck |
| US4120065A (en) * | 1977-12-15 | 1978-10-17 | Eugene W. Sivachenko | Lightweight modular, truss-deck bridge system |
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| KR20110004179A (en) * | 2009-07-07 | 2011-01-13 | (주)삼현피에프 | Upper structure of continuous steel composite girder bridge for achieving easy installation and effective endurance for negative moment and method of constructing same |
| KR20130063575A (en) * | 2011-12-07 | 2013-06-17 | (주) 에스에스 | Secondary road structure for bridge |
| CN106758881A (en) * | 2017-01-23 | 2017-05-31 | 重庆恒佳工程技术咨询有限公司 | Bridge maintenance rail steel structural support arm |
| KR20190096239A (en) * | 2018-02-08 | 2019-08-19 | (주)강토이앤씨 | bridge structure with earthquake proof function |
| CN113250073A (en) * | 2021-02-07 | 2021-08-13 | 中铁四局集团有限公司 | After-loading method adjusting tool for large-span railway steel truss girder bridge large-tonnage spherical support |
| CN219342895U (en) * | 2023-04-12 | 2023-07-14 | 河南交城建工程技术研究院有限公司 | Steel construction bridge reinforcing apparatus |
| CN116575358A (en) * | 2023-04-18 | 2023-08-11 | 中交第二航务工程局有限公司 | Accurate positioning construction method suitable for mounting main pier support of large-span steel truss arch bridge |
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2024
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|---|---|---|---|---|
| DE1202302B (en) * | 1960-02-27 | 1965-10-07 | Rheinstahl Gmbh Wanheim | Steel bridge with seamless reinforced concrete deck |
| DE2729250A1 (en) * | 1977-06-29 | 1979-01-04 | Hein Lehmann Ag | Single span girder grid assembled bridge - has fish-plate connections for spans resilient for transverse forces and bending moments |
| US4120065A (en) * | 1977-12-15 | 1978-10-17 | Eugene W. Sivachenko | Lightweight modular, truss-deck bridge system |
| DE10111935A1 (en) * | 2001-03-13 | 2001-10-04 | Karl Gerhards | Horizontal force bearing to couple bridge supporting frameworks, especially for railway bridge; has longitudinal flexible steel constructions connected at height of centroidal axis of frameworks |
| KR20040076107A (en) * | 2003-02-24 | 2004-08-31 | 주식회사 북정 | bridge bearing and it's install method made use of an oil pressure |
| KR20110004179A (en) * | 2009-07-07 | 2011-01-13 | (주)삼현피에프 | Upper structure of continuous steel composite girder bridge for achieving easy installation and effective endurance for negative moment and method of constructing same |
| KR20130063575A (en) * | 2011-12-07 | 2013-06-17 | (주) 에스에스 | Secondary road structure for bridge |
| CN106758881A (en) * | 2017-01-23 | 2017-05-31 | 重庆恒佳工程技术咨询有限公司 | Bridge maintenance rail steel structural support arm |
| KR20190096239A (en) * | 2018-02-08 | 2019-08-19 | (주)강토이앤씨 | bridge structure with earthquake proof function |
| CN113250073A (en) * | 2021-02-07 | 2021-08-13 | 中铁四局集团有限公司 | After-loading method adjusting tool for large-span railway steel truss girder bridge large-tonnage spherical support |
| CN219342895U (en) * | 2023-04-12 | 2023-07-14 | 河南交城建工程技术研究院有限公司 | Steel construction bridge reinforcing apparatus |
| CN116575358A (en) * | 2023-04-18 | 2023-08-11 | 中交第二航务工程局有限公司 | Accurate positioning construction method suitable for mounting main pier support of large-span steel truss arch bridge |
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| CN117904944B (en) | 2024-05-31 |
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