CN114182583A - Supporting structure of temporary beam - Google Patents
Supporting structure of temporary beam Download PDFInfo
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- CN114182583A CN114182583A CN202111447261.4A CN202111447261A CN114182583A CN 114182583 A CN114182583 A CN 114182583A CN 202111447261 A CN202111447261 A CN 202111447261A CN 114182583 A CN114182583 A CN 114182583A
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 267
- 239000007787 solid Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B23/00—Easily dismountable or movable tracks, e.g. temporary railways; Details specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
Abstract
The invention provides a supporting structure of a temporary beam, wherein an oblique angle is formed between the extension direction of the temporary beam and the length direction of a temporary beam strip base; the support structure is arranged below the stool beam in the vertical direction and comprises a support cross rod and at least one support oblique rod. The supporting cross bar is arranged along the direction parallel to the extending direction of the toilet beam, one end of the supporting cross bar is positioned at the vertex position of the obtuse-angle oblique angle between the toilet beam and the toilet beam strip base, the other end of the supporting cross bar is positioned at the preset distance away from the vertex of the obtuse-angle oblique angle in the direction that the toilet beam is far away from the toilet beam strip base, and the supporting cross bar supports the corresponding part of the toilet beam; one end of each supporting inclined rod is fixed on one side of the beam strip base close to the supporting cross rod, and the other end of each supporting inclined rod is fixedly connected with the supporting cross rod so as to support the supporting cross rod. According to the scheme, the supporting cross rod is arranged, when a train passes through, the downward deflection deformation value of the beam with the supporting structure at the wheels at the two sides is close, the risk and the possibility of height difference of the wheels at the two sides are effectively avoided, and the running safety of the train is improved.
Description
Technical Field
The invention relates to the technical field of railway supporting pieces, in particular to a supporting structure of a temporary beam.
Background
Railway transportation is one of the main modes of modern transportation and plays an important role in the transportation field. In order to realize railway transportation in various terrains, railway bridges are also rapidly developed along with the increase of railway lines. Railroad bridges are structures that a railroad spans a river, lake, straits, valley or other obstacle, and are constructed to achieve a grade crossing of a railroad line with a railroad line or road.
For a railway bridge, as shown in fig. 1, the railway bridge comprises a temporary girder 01, a temporary girder bar base 03 and a railway track 04, wherein the railway track 04 is erected on the temporary girder 01, the temporary girder 01 is arranged on the temporary girder bar base 03, and the temporary girder 01 can be removed after the box-shaped bridge 02 is jacked in. Generally, the extending direction of the railway track 04 is orthogonal to the longitudinal direction of the bed 03, but since the box bridge 02 that needs to cross the road, river, or the like is to be diagonally crossed with the railway due to planning restrictions and the like, there is a case where an oblique angle is formed between the extending direction of the railway track 04 and the longitudinal direction of the bed 03 during the process of erecting the bed 01. Under the condition, when a train passes above the temporary beam 01, due to skew, the two longitudinal beams of the temporary beam between the strip foundations are not deflected synchronously, and the horizontal irregularity and the triangular pits of the track on the temporary beam can be caused due to the asynchronous deflection, so that wheels on the left side and the right side of the train have certain height difference, and the driving speed, the stability and the safety are influenced.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, an oblique crossing angle exists between the extending direction of a railway and the length direction of a temporary beam strip foundation, and when a train passes through the strip foundation, two longitudinal beams of the temporary beam are not bent synchronously, so that the track on the temporary beam has horizontal irregularity and triangular pits, and further, wheels on the left side and the right side have certain height difference, and the running speed, the stability and the safety are influenced.
In order to solve the above problems, an embodiment of the present invention discloses a support structure for a temporary girder, wherein a railway is erected on the temporary girder, the temporary girder is arranged on a top surface of a temporary girder bar base, the railway comprises a first track and a second track which are parallel to each other, an extending direction of the railway and an extending direction of the temporary girder are in the same direction, and an oblique angle is formed between the extending direction of the temporary girder and a length direction of the temporary girder bar base; and, the bearing structure is set up in the below of just roof beam in vertical direction, includes: the supporting cross rod is arranged along the direction parallel to the extending direction of the toilet beam, one end of the supporting cross rod is positioned at the vertex position of the obtuse-angle oblique angle between the toilet beam and the toilet beam strip base, the other end of the supporting cross rod is positioned in the direction away from the toilet beam strip base and at the preset distance away from the vertex of the obtuse-angle oblique angle, and the supporting cross rod supports the corresponding part of the toilet beam; and at least one supporting diagonal rod, wherein one end of each supporting diagonal rod is fixed on one side of the beam strip base close to the supporting cross rod, and the other end of each supporting diagonal rod is fixedly connected with the supporting cross rod so as to support the supporting cross rod relative to the beam strip base.
Adopt above-mentioned scheme, support the corresponding part of crossbeam through setting up and support the crossbeam and support, even have the skew angle between the extending direction of crossbeam and the length direction of crossbeam strip base, owing to be provided with and support the crossbeam, when the train passes through, can make the condition that original one side wheel had the support, opposite side wheel did not have the support become both sides wheel and all have the support. Therefore, when the train passes through the temporary beam, the two longitudinal beams of the temporary beam are deflected synchronously, and when the train passes through the temporary beam, the wheels on the left side and the right side of the train at any position are stressed identically, the height difference does not exist between the two rails of the railway, and the running stability and safety of the train are improved.
According to another embodiment of the present invention, the support structure of the stool beam disclosed in the embodiment of the present invention, at least one support diagonal rod is provided in pairs and includes at least a pair of distal support diagonal rods; one end of each of two far-end supporting inclined rods in the pair of far-end supporting inclined rods is fixed at the vertex position of an acute-angle oblique crossing angle between the bed-pan beam and the bed-pan beam strip base; and the other end of one far-end supporting inclined rod is fixedly connected with the other end of the supporting cross rod, and the other end of the other far-end supporting inclined rod is positioned between one end and the other end of the supporting cross rod.
By adopting the scheme, the far-end supporting inclined rod supports the supporting cross rod in the horizontal direction, and the far-end supporting inclined rod only occupies less space to support the supporting cross rod, so that arrangement of other structures below the beam is facilitated.
According to another embodiment of the present invention, the at least one supporting diagonal member further comprises at least one pair of intermediate supporting diagonal members; one end of one middle supporting inclined rod and one end of the other middle supporting inclined rod in each pair of middle supporting inclined rods are fixed at the same position of one side, close to the supporting cross rod, of the bed pan beam base, and the other ends of the two middle supporting inclined rods are fixedly connected with the corresponding positions of the supporting cross rod at intervals of preset distances; and, a plurality of pairs of intermediate support diagonal rods are arranged in sequence along the length direction of the toilet bar base in a uniform manner with respect to a plurality of fixed positions of the toilet bar base.
By adopting the scheme, the supporting cross rod is supported from the vertical direction by the at least one pair of middle supporting inclined rods, the gravity of the train can be directly borne by the vertical upward supporting inclined rods, the supporting effect is better, the plurality of middle supporting inclined rods are arranged, the supporting cross beam can be enabled to be in the range of the inclined rods, the deflection deformation is reduced, and the stress is more uniformly distributed.
According to another embodiment of the present invention, the support structure of the stool beam disclosed in the embodiment of the present invention, at least one support diagonal rod is provided in pairs and includes at least a pair of distal support diagonal rods; one end of one far-end supporting inclined rod in the pair of far-end supporting inclined rods is fixed at the vertex position of the acute-angle oblique angle between the bed pan beam and the bed pan beam strip base, and one end of the other far-end supporting inclined rod is fixed at the position, close to one side of the supporting cross rod, of the bed pan beam strip base and away from the vertex of the acute-angle oblique angle by a preset distance; and the other ends of the two far-end supporting inclined rods are fixedly connected with the other end of the supporting cross rod.
According to another embodiment of the present invention, the at least one supporting diagonal member further comprises at least one pair of intermediate supporting diagonal members; one end of one middle supporting inclined rod and one end of the other middle supporting inclined rod in each pair of middle supporting inclined rods are fixed at fixed positions, which are close to one side of the supporting cross rod, of the portable beam base and are spaced by a preset distance; the other ends of the two middle supporting inclined rods are fixedly connected with the same position of the supporting cross rod; and, a plurality of pairs of intermediate support diagonal rods are arranged in sequence along the length direction of the toilet bar base in a uniform manner with respect to a plurality of fixed positions of the toilet bar base.
According to another embodiment of the present invention, the support structure of the girder is disclosed in which concrete is poured between the support cross bar and the at least one support diagonal bar, so that the support cross bar and the at least one support diagonal bar form a solid structure.
By adopting the scheme, the supporting cross rod and the supporting inclined rod are formed into a solid structure instead of a frame, so that the whole plane where the stool beam is located can be supported, and the supporting effect is better.
According to another specific embodiment of the present invention, the supporting structure of the stool beam disclosed in the embodiment of the present invention further comprises at least one auxiliary supporting cross bar, an auxiliary supporting diagonal bar corresponding to each auxiliary supporting cross bar, and a fixing connecting bar; wherein, at least one auxiliary supporting cross bar is arranged along the direction parallel to the extending direction of the toilet beam and is arranged on the two sides of the supporting cross bar at equal intervals within the length range of the toilet beam strip base; the length direction of the fixed connecting rods is perpendicular to the extending direction of the temporary beam, and the fixed connecting rods are fixed with one end of each auxiliary supporting cross rod, which is far away from the temporary beam strip base, and the other end of each supporting cross rod so as to be connected with each auxiliary supporting cross rod; one end of each auxiliary supporting inclined rod is fixed on one side of the beam foundation close to the supporting cross rod, and the other end of each auxiliary supporting inclined rod is fixedly connected with the corresponding auxiliary supporting cross rod so as to support the auxiliary supporting cross rod relative to the beam foundation.
By adopting the scheme, due to the fact that the auxiliary supporting cross rods are arranged, weight of a train passing by can be dispersed through the auxiliary supporting cross rods and cannot be concentrated on the supporting cross rods, the supporting cross rods cannot be damaged quickly due to the fact that large pressure is borne, the transverse rigidity of the supporting structure is improved, the force can be distributed more uniformly through the auxiliary supporting cross rods, and the service life of the supporting structure is prolonged.
According to another embodiment of the present invention, in the support structure of the girder according to the embodiment of the present invention, concrete is poured between each auxiliary support cross bar and each auxiliary support diagonal bar, and between each auxiliary support cross bar and each auxiliary support diagonal bar, the fixing connecting bar are formed into a solid structure.
By adopting the scheme, each auxiliary support cross rod, each auxiliary support inclined rod and the fixed connecting rod form a solid structure instead of a frame, so that the whole plane where the stool beams are located can be supported, and the supporting effect is better.
According to another specific embodiment of the present invention, the length of the supporting beam is calculated according to the following formula:
wherein l is the length of the supporting transverse beam, S is the length between the intersection point of one of the longitudinal beams of the temporary beam and the temporary beam strip base and the intersection point of the other longitudinal beam of the temporary beam and the temporary beam strip base in the length direction of the temporary beam strip base, W is the width between the two longitudinal beams of the temporary beam, Delta l is a distance constant, and the range of Delta l is 1m to 3 m.
By adopting the scheme, the length of the supporting transverse rod is lengthened by increasing the distance constant, the supporting range can be enlarged, and the supporting effect is improved.
According to another specific embodiment of the present invention, the support structure of the stool beam disclosed in the embodiment of the present invention calculates an included angle between the support cross bar and the support diagonal bar in the horizontal direction according to the following formula:
wherein, theta1Is an included angle between the supporting cross rod and the supporting oblique rod in the horizontal direction, N1 is the length of the temporary beam strip base, N2 is the width of the temporary beam strip base, g is the gravity acceleration, 9.8N/kg is taken, S is the length direction of the temporary beam strip base, and the intersection of one longitudinal beam of the temporary beam and the temporary beam strip baseThe length between the point and the intersection point of the other longitudinal beam of the temporary beam and the temporary beam strip base, W is the width between the two longitudinal beams of the temporary beam, CdIs the wind resistance coefficient and has the range of 0, 1]V is the running speed of the train and ranges from 30km/h to 80km/h, R is the wheel radius of the train, M is the head mass of the train and ranges from 120 tons to 180 tons, EMAXIs the maximum stiffness of the support rail; and, the included angle between the supporting cross rod and the supporting diagonal rod in the vertical direction is calculated according to the following formula:
wherein, theta2Is the included angle between the supporting cross rod and the supporting oblique rod in the vertical direction, N1 is the length of the temporary beam strip base, N2 is the width of the temporary beam strip base, g is the gravity acceleration, 9.8N/kg is taken, S is the length between the intersection point of one longitudinal beam of the temporary beam and the temporary beam strip base and the intersection point of the other longitudinal beam of the temporary beam and the temporary beam strip base in the length direction of the temporary beam strip base, W is the width between the two longitudinal beams of the temporary beam, CdIs the wind resistance coefficient and has the range of 0, 1]V is the running speed of the train and ranges from 30km/h to 80km/h, R is the wheel radius of the train, M is the head mass of the train and ranges from 120 tons to 180 tons, EMAXThe maximum stiffness of the support rail.
By adopting the scheme, when the included angle between the supporting cross rod and the supporting inclined rod is calculated, the parameters related to the train, the parameters related to the supporting cross rod, the beam foundation and the railway are considered, so that the calculated angle is more accurate, the unstable supporting condition caused by too large or too small angle is avoided to the greatest extent, and the reliability of the supporting structure is improved.
The invention has the beneficial effects that:
in the supporting structure of the temporary beam provided by the scheme, the supporting cross rods are arranged to support the corresponding parts of the temporary beam, even if oblique crossing angles are formed between the extending direction of the temporary beam and the length direction of the temporary beam strip base, the supporting cross rods are arranged to support the temporary beam, and when a train passes through, the original situation that wheels on one side are supported and wheels on the other side are not supported can be changed into the situation that wheels on two sides are supported. Therefore, when the train passes through the temporary beam, the two longitudinal beams of the temporary beam are deflected synchronously, and when the train passes through the temporary beam, the wheels on the left side and the right side of the train at any position are stressed identically, the height difference does not exist between the two rails of the railway, and the running stability and safety of the train are improved.
Drawings
FIG. 1 is a schematic illustration of a prior art conventional joist base crossing a railway;
FIG. 2 is a schematic top view of a support structure of a portable crane according to an embodiment of the present invention;
FIG. 3 is a front view of a support structure of the temporary beam according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a support structure for a portable crane according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of another front view of a support structure of the rocker according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a support structure for a portable crane according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of another front view of a support structure of the rocker according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of another front view of a support structure of the rocker provided by the embodiment of the invention;
fig. 9 is another schematic top view of a support structure of a temporary beam according to an embodiment of the present invention.
Description of prior art reference numerals:
01. a temporary beam; 02. a box bridge; 03. a beam foundation; 04. and (4) a railway track.
The reference signs of the present application illustrate:
1. a temporary beam; 2. a beam foundation; 3. a support rail; 4. supporting the diagonal rods; 5. an auxiliary support rail; 6. and fixing the connecting rod.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
When the extending direction of the railway and the length direction of the temporary beam strip foundation have an oblique angle, when a train passes through the temporary beam between the temporary beam strip foundations, in some positions, the temporary beam under the wheel on one side of the train is supported by the temporary beam strip foundations, and the temporary beam under the wheel on the other side of the train is not supported by the temporary beam strip foundations, so that the two longitudinal beams of the temporary beam are stressed unevenly, and the beams are not deflected synchronously. Therefore, the railway tracks supported by the temporary beam are affected by different supporting forces of the two longitudinal beams of the temporary beam to cause unsmooth left and right running, so that the two tracks of the railway have height difference, and further vehicles on the left and right sides of a passing train have height difference, so that the running speed and the stability are affected, and potential safety hazards are also caused.
In order to solve the problems that in the prior art, an oblique crossing angle exists between the extending direction of a railway and the length direction of a temporary beam strip foundation, when a train passes through the strip foundation, two longitudinal beams of the temporary beam are not bent synchronously, so that the track on the temporary beam is not level and smooth and triangular pits exist, and further, wheels on the left side and the right side have certain height difference, and the driving speed, the stability and the safety are influenced, the embodiment of the invention provides the supporting structure of the temporary beam.
Further, referring to fig. 2, in the support structure for the temporary girder according to the embodiment of the present invention, the railway is erected on the temporary girder 1, the temporary girder 1 is disposed on the top surface of the temporary girder foundation 2, the railway includes a first track and a second track which are parallel to each other, the temporary girder includes two longitudinal girders, the extending direction of the railway and the extending direction of the temporary girder are the same direction, and an oblique angle is formed between the extending direction of the temporary girder and the length direction of the temporary girder foundation 2. With such a skew angle, when a train passes through the temporary girder base 2, for example, at a position where a straight line perpendicular to the extending direction of the temporary girder 1 is defined by the point a and the point B, the downward deflection deformation of the point a side of the temporary girder under the train wheel pressure is smaller than that of the point B side, and thus there is a certain height difference between wheels on both sides A, B.
Further, referring to fig. 2, the support structure of the stool beam according to the embodiment of the present invention, which is disposed below the stool beam 1 in the vertical direction, includes: and the supporting cross rod 3 is arranged along the direction parallel to the extending direction of the stool beam 1, one end of the supporting cross rod 3 is positioned at the vertex position of the obtuse oblique angle between the stool beam 1 and the stool beam strip base 2, the other end of the supporting cross rod 3 is positioned in the direction that the stool beam 1 is far away from the stool beam strip base 2 and at the position which is away from the vertex position of the obtuse oblique angle by a preset distance, and the supporting cross rod 3 supports the corresponding part of the stool beam 1. Wherein the preset distance is a distance between the other end of the support rail 3 and the vertex of the obtuse-angle skew angle in the horizontal direction. The distance range can be determined by the length between the intersection point of the first track of one of the longitudinal beams of the temporary beam 1 and the temporary beam strip base 2, the intersection point of the second track of the other longitudinal beam of the temporary beam 1 and the temporary beam strip base 2, and the width between the first track and the second track of the two longitudinal beams of the temporary beam 1, which will be described in detail later. More specifically, in fig. 2, the support cross bar 3 is provided in two, one on the left side of the stool bar base 2 and the other on the right side of the stool bar base 2. When the supporting device is arranged, the supporting cross rod 3 can be arranged on one side of the beam base 2 to save cost, but the supporting cross rods 3 are preferably arranged on two sides of the beam base 2 to improve the supporting effect. The support rail 3 supports the corresponding portion of the stool beam 1, that is, the support rail 3 supports the stool beam 1 in a range from the vertex of the obtuse oblique angle to a predetermined distance from the vertex of the obtuse oblique angle. I.e. the support rail 3 supports the spreader beam 1 over its length.
Further, referring to fig. 3, in the support structure of the utility model, the support structure further comprises at least one support diagonal 4, one end of each support diagonal 4 is fixed on one side of the utility grid base 2 close to the support cross bar 3, and the other end is fixedly connected with the support cross bar 3, so as to support the support cross bar 3 relative to the utility grid base 2. Specifically, the supporting diagonal rods 4 are provided for supporting the supporting cross rod 3, and the number thereof may be set to one, two or more. No matter how the supporting diagonal rods 4 are arranged, in order to achieve a better supporting effect, the supporting diagonal rods 4 and the supporting cross rods 3 generally form a triangular structure. More specifically, the manner of fixedly connecting one end of the supporting diagonal rod 4 with the bed frame 2 and the manner of fixedly connecting the other end of the supporting diagonal rod 4 with the supporting cross rod 3 include, but are not limited to, welding, screwing and integral molding. While the support rail 3 may be in contact with the stool beam 1 only, connectors such as straps or the like may be provided to make the support of the stool beam 1 by the support rail 3 more stable.
Furthermore, in the supporting structure of the temporary girder according to the embodiment of the present invention, the supporting cross bar 3 is provided to support the corresponding portion of the temporary girder 1, even if an oblique angle is formed between the extending direction of the temporary girder 1 and the length direction of the temporary girder bar base 2, since the supporting cross bar 3 is provided to support the temporary girder 1, when a train passes through, the original situation that the wheels on one side are supported and the wheels on the other side are not supported can be changed to the situation that the wheels on both sides are supported. Therefore, when the train passes through the temporary beam 1, the two longitudinal beams of the temporary beam 1 are deflected synchronously, and when the train passes through the temporary beam 1, the wheels on the left side and the right side of the train at any position are stressed identically, the height difference does not exist between the two rails of the railway, and the running stability and safety of the train are improved.
Further, referring to fig. 4, the embodiment of the present invention provides a support structure of a stool beam, in which at least one support diagonal 4 is provided in a pair and includes at least a pair of distal support diagonal. One end of each of two far-end supporting inclined rods in the pair of far-end supporting inclined rods is fixed at the vertex position of an acute angle oblique crossing angle between the bed-pan beam 1 and the bed-pan beam strip base 2. And the other end of one far-end supporting diagonal rod is fixedly connected with the other end of the supporting cross rod 3, and the other end of the other far-end supporting diagonal rod is positioned between one end and the other end of the supporting cross rod 3. Specifically, the distal end support diagonal is located on the same horizontal plane as the support cross bar 3, i.e., supports the support cross bar 3 in the horizontal direction.
Furthermore, with such an arrangement, since the far-end supporting diagonal rod supports the supporting cross rod 3 in the horizontal direction, the far-end supporting diagonal rod can support the supporting cross rod 3 only by occupying less space, which is convenient for arrangement of other structures below the beam 1.
Still further, referring to fig. 5, in the support structure of the girder according to the embodiment of the present invention, at least one of the support diagonal members 4 further includes at least one pair of intermediate support diagonal members. One end of one middle supporting inclined rod and one end of the other middle supporting inclined rod in each pair of middle supporting inclined rods are fixed at the same position of one side, close to the supporting cross rod 3, of the portable beam base 2, the other ends of the two middle supporting inclined rods are fixedly connected with the corresponding positions of the supporting cross rod 3 at intervals of preset distances. Wherein the preset distance is a distance between the other ends of the two intermediate support diagonal rods of each pair of intermediate support diagonal rods in the horizontal direction. The distance range can be determined by a person skilled in the art according to the length of the support rail 3, in combination with the number of intermediate support ramps and other requirements. Furthermore, a plurality of pairs of intermediate support diagonal rods are arranged in sequence and uniformly in the length direction of the bed pan bar base 2 at a plurality of fixing positions relative to the bed pan bar base 2. In particular, the intermediate support diagonal is a support crossbar 3 in the vertical direction. The spacing distance between the other ends of the two middle supporting diagonal rods in each pair of middle supporting diagonal rods can be set according to actual requirements, and in order to improve the stability of the support, one end of one middle supporting diagonal rod can be arranged on the left side of the midpoint of the supporting cross rod 3, and one end of the other middle supporting diagonal rod can be arranged on the right side of the midpoint of the supporting cross rod 3; or one end of one middle supporting diagonal rod is arranged at the position of the other end of the supporting cross rod 3, and one end of the other middle supporting diagonal rod is arranged at the midpoint position of the supporting cross rod 3. It should be understood that, in order to further improve the stability of the support of the pair of support crossbars 3, a plurality of pairs of intermediate support crossbars may be provided, wherein one intermediate support crossbar of each pair of intermediate support crossbars is fixed at the same position on the side of the bed board 2 close to the support crossbars 3 as one end of the other intermediate support crossbar, and is arranged on the same horizontal line as the first pair of intermediate support crossbars at a predetermined distance along the length direction of the bed board 2. The other ends of one intermediate support diagonal and the other intermediate support diagonal may be disposed at the same position as the other ends of one intermediate support diagonal and the other intermediate support diagonal of the first pair of intermediate support diagonals, or at different positions.
Furthermore, the supporting cross rod 3 is supported from the vertical direction due to the arrangement mode that at least one pair of middle supporting inclined rods are arranged, the vertical upward supporting inclined rods can directly bear the gravity of a train, the downward deflection deformation of all parts of the supported beam is more uniform in the range of the supporting cross rod 3, the supporting effect is better, the plurality of middle supporting inclined rods are arranged, the supporting cross beam can be enabled to be in the range of the inclined rods, the deflection deformation is reduced, and the stress is also more uniformly distributed.
Further, another embodiment of the present invention provides a support structure for a stool beam, in which at least one support diagonal 4 is provided in pairs and includes at least one pair of distal support diagonal. Referring to fig. 6, one end of one of the pair of distal support diagonal rods is fixed to the stool beam 1 at the acute-angle diagonal vertex position of the stool beam base 2, and referring to fig. 7, one end of the other distal support diagonal rod is fixed to the stool beam base 2 at a position close to the side of the support cross bar 3 and at a predetermined distance from the acute-angle diagonal vertex position. Wherein the preset distance is the distance between the other far-end supporting diagonal rod and the vertex of the acute-angle diagonal angle in the vertical direction. The distance range can be determined by a person skilled in the art according to the height of the bed 2, the length of the support beam 3 and the practical requirements. And the other ends of the two far-end supporting inclined rods are fixedly connected with the other end of the supporting cross rod 3. Specifically, when a pair of distal end support diagonal rods are provided, one of the distal end support diagonal rods supports the support cross rod 3 in the horizontal direction, and the other distal end support diagonal rod supports the support cross rod 3 in the vertical direction. When a plurality of pairs of distal support struts are provided, the other distal support struts follow the arrangement of the first pair of distal support struts such that one of each pair supports the support cross-bar 3 in the horizontal direction and the other supports the support cross-bar 3 in the vertical direction. However, the specific arrangement positions of the two ends are not limited in this embodiment, and those skilled in the art can combine the two ends arbitrarily to achieve better support of the support rail 3.
Still further, referring to fig. 8, another embodiment of the present invention provides the support structure for the girder, wherein the at least one support diagonal member 4 further includes at least one pair of intermediate support diagonal members. Wherein, one end of one middle supporting diagonal rod and one end of the other middle supporting diagonal rod in each pair of middle supporting diagonal rods are fixed at the fixed positions of one side of the portable beam base 2 close to the supporting cross rod 3 and at a preset distance. Wherein the preset distance is a distance between one end of one intermediate support diagonal rod and one end of the other intermediate support diagonal rod in each pair of intermediate support diagonal rods in the vertical direction. The distance range can be determined by those skilled in the art according to the height of the bar base 2 and the distance between the other distal support diagonal and the vertex of the acute skew angle, in combination with the number of intermediate support diagonals and other requirements. And the other ends of the two middle supporting inclined rods are fixedly connected with the same position of the supporting cross rod 3. Furthermore, a plurality of pairs of intermediate support diagonal rods are arranged in sequence and uniformly in the length direction of the bed pan bar base 2 at a plurality of fixing positions relative to the bed pan bar base 2. It should be noted that, the position where the other ends of the two middle supporting diagonal rods are both fixedly connected with the supporting cross rod 3 may be any position on the supporting cross rod 3, and in order to better support the supporting cross rod 3, the position where the other ends of the two middle supporting diagonal rods are both fixedly connected with the supporting cross rod 3 is the right side of the midpoint of the supporting cross rod 3.
Further, in a preferred embodiment of the present invention, concrete is poured between the support cross bar 3 and the at least one support diagonal bar 4, so that the support cross bar 3 and the at least one support diagonal bar 4 form a solid structure. It is to be understood that the person skilled in the art may, depending on the actual requirements, apply mortar or other mixtures between the support crossbar 3 and the at least one support diagonal 4, which the present embodiment is not restricted to. With the structure, the supporting cross rod 3 and the supporting inclined rod 4 are formed into a solid structure instead of a frame, so that the whole plane of the stool beam 1 can be supported, and the supporting effect is better.
Further, referring to fig. 9, in the support structure of the stool beam according to the embodiment of the present invention, the support structure further includes at least one auxiliary support cross bar 5, an auxiliary support diagonal bar (not shown) corresponding to each auxiliary support cross bar 5, and a fixing link 6. Wherein at least one auxiliary support rail 5 is provided in a direction parallel to the extending direction of the stool beam 1, and is provided on both sides of the support rail 3 at equal intervals within the length of the stool beam base 2. The length direction of the fixed connecting rod 6 is perpendicular to the extending direction of the auxiliary beam 1, and is fixed with one end of each auxiliary supporting cross rod 5 far away from the auxiliary beam strip base 2 and the other end of the supporting cross rod 3 so as to be connected with each auxiliary supporting cross rod 5, one end of each auxiliary supporting inclined rod is fixed on one side of the auxiliary beam strip base 2 close to the supporting cross rod 3, and the other end of each auxiliary supporting inclined rod is fixedly connected with the corresponding auxiliary supporting cross rod 5 so as to support the auxiliary supporting cross rod 5 relative to the auxiliary beam strip base 2. It should be noted that, among the plurality of auxiliary support cross bars 5, the auxiliary support cross bars 5 located at both sides may be connected with both ends of the stool beam base 2, that is, the auxiliary support cross bars 5 may support the range of the length direction of the whole stool beam base 2, therefore, the weight of the passing train may be dispersed via each auxiliary support cross bar 5, and may not be concentrated on the support cross bar 3, the support cross bar 3 may not be damaged quickly due to bearing of a large pressure, the lateral rigidity of the support structure is improved, and the forces may be more uniformly distributed by the plurality of auxiliary support cross bars, and the service life of the support structure is prolonged.
Further, in a preferred embodiment of the present invention, concrete is poured between each auxiliary support cross bar 5 and each auxiliary support diagonal bar, and the fixing connecting bar 6, so that each auxiliary support cross bar and each auxiliary support diagonal bar, and the fixing connecting bar 6 are formed as a solid structure. With this structure, the auxiliary support crossbars 5, the auxiliary support diagonal rods, and the fixed link 6 are formed as a solid structure, rather than a single frame, and can support the entire plane on which the stool beam 1 is located, and the supporting effect is further improved.
It should be noted that all the support rods mentioned in the present embodiment, including the support cross rod 3, the support diagonal rod 4, the middle support diagonal rod, the distal support diagonal rod, etc., as well as the auxiliary support cross rod 5, the fixed connecting rod 6, etc., may be disposed on both sides of the temporary beam base 2, so that the left and right wheels are stressed the same no matter where the train passes through the temporary beam base 2. The scheme of arranging the support rods on both sides can be directly derived by those skilled in the art according to the scheme of arranging the support rods on only one side, and the detailed description of the embodiment is omitted.
It should be noted that, in the present embodiment, the connection relationship between each connecting rod and the temporary beam foundation 2 and the connection relationship between the connecting rods can be arbitrarily selected according to actual requirements, for example, detachable connection manners such as screw connection and steel bar insertion can be selected to improve the convenience of dismounting the supporting structure, and fixed connection manners such as welding and casting can be selected to improve the stability of the supporting structure. The positions of the end points of the connecting rods and the distances between the end points of any two connecting rods are specifically set by those skilled in the art according to parameters such as the width of the rail, the width and the length of the beam foundation 2, and the present embodiment does not limit this.
Further, in the support structure of the stool beam provided by the embodiment of the present invention, the length of the support cross bar 3 is calculated according to the following formula:
wherein l is the length of the support cross bar 3, S is the length between the intersection point of one of the longitudinal beams of the temporary beam 1 and the temporary beam base 2 and the intersection point of the other longitudinal beam of the temporary beam 1 and the temporary beam base 2 in the length direction of the temporary beam base 2, W is the width between the two longitudinal beams of the temporary beam 1, Δ l is a distance constant, and the range of Δ l is 1m to 3 m. It is understood that the intersection point of one of the longitudinal beams of the rocker 1 with the rocker base 2, the length S between the intersection point of the other longitudinal beam of the rocker 1 with the rocker base 2, the width W between the two longitudinal beams of the rocker 1, and the distance l0 between the intersection point of one of the longitudinal beams of the rocker 1 with the rocker base 2 and the orthogonal point C of the rocker base 2 with the rocker 1 may be formed as a right triangle. While the length of the support rail 3 is the length of the leg l0 of the right triangle plus a distance constant. The right-angle side l0 of the right-angle triangle can be calculated by the pythagorean theorem. The distance constant is increased, so that the length of the supporting cross rod 3 is lengthened, the range of the length of l0 can be supported, the temporary beam 1 with a certain length on the right side of l0 can be supported, and the supporting effect is improved.
It should be noted that, a large number of test results show that, the length of the supporting cross rod 3 is too long, and a train may resonate at the end of the supporting cross rod 3 when passing through, thereby affecting the stability of the train. If the support cross bar 3 is too short, the longitudinal beams of the bed 1 cannot be effectively supported. And set up the range of distance constant as 1m to 3m, can avoid resonating, can also support just roof beam 1 effectively, improved bearing structure's supporting effect.
Further, in the supporting structure of the stool beam provided by the embodiment of the present invention, an included angle between the supporting cross bar 3 and the supporting diagonal bar 4 in the horizontal direction is calculated according to the following formula:
wherein, theta1An included angle between the supporting cross rod 3 and the supporting inclined rod 4 in the horizontal direction is shown, N1 is the length of the temporary beam strip base 2, N2 is the width of the temporary beam strip base 2, g is the gravity acceleration, 9.8N/kg is taken, S is the length between the intersection point of one longitudinal beam of the temporary beam 1 and the temporary beam strip base 2 and the intersection point of the other longitudinal beam of the temporary beam 1 and the temporary beam strip base 2 in the length direction of the temporary beam strip base 2, W is the width between the two longitudinal beams of the temporary beam 1, and C is the width between the two longitudinal beams of the temporary beam 1dIs the wind resistance coefficient and has the range of 0, 1]V is the running speed of the train and ranges from 30km/h to 80km/h, R is the wheel radius of the train, M is the head mass of the train and ranges from 120 tons to 180 tons, EMAXThe maximum stiffness of the support rail.
For example, the length of the temporary beam base 2 is 30m, the width is 3m, the width between two longitudinal beams of the temporary beam 1 is 1.435m, the length between the intersection point of one longitudinal beam of the temporary beam 1 and the temporary beam base 2 and the intersection point of the other longitudinal beam of the temporary beam 1 and the temporary beam base 2 in the length direction of the temporary beam base 2 is 1.7m, the running speed of the train is 40km/h, the wheel radius is 1.05m, the head mass of the train is 130 tons, and EMAXIn the range of 150000 Nm/deg-300000 Nm/deg, taking 160000, finally calculating theta1About 36.9, that is to say the angle between the support crossbar 3 and the support diagonal 4 in the horizontal direction is about 36.9.
The angle between the support cross bar 3 and the support diagonal bar 4 in the vertical direction is calculated according to the following formula:
wherein, theta2An included angle between the supporting cross rod 3 and the supporting inclined rod 4 in the vertical direction is shown, N1 is the length of the temporary beam strip base 2, N2 is the width of the temporary beam strip base 2, g is the gravity acceleration, 9.8N/kg is taken, S is the length between the intersection point of one longitudinal beam of the temporary beam 1 and the temporary beam strip base 2 and the intersection point of the other longitudinal beam of the temporary beam 1 and the temporary beam strip base 2 in the length direction of the temporary beam strip base 2, W is the width between the two longitudinal beams of the temporary beam 1, and C is the width between the two longitudinal beams of the temporary beam 1dIs the wind resistance coefficient and has the range of 0, 1]V is the running speed of the train and ranges from 30km/h to 80km/h, R is the wheel radius of the train, M is the head mass of the train and ranges from 120 tons to 180 tons, EMAXThe maximum stiffness of the support beam 3.
According to the data for calculating the included angle between the support cross bar 3 and the support diagonal bar 4 in the horizontal direction, the calculated included angle between the support cross bar 3 and the support diagonal bar 4 in the vertical direction is about 25.8 °.
It should be noted that, a large number of test results show that an excessively large angle between the support cross bar 3 and the support diagonal bar 4 causes a too small component of the support force of the support diagonal bar 4 in the thickness direction of the support cross bar 3, which weakens the support effect; if the angle between the supporting cross rod 3 and the supporting diagonal rod 4 is too small, the supporting effect of the supporting diagonal rod 4 by the beam base 2 is weakened. The included angle between the supporting cross rod 3 and the supporting inclined rod 4 can be accurately calculated by using the calculation formula of the included angle between the supporting cross rod and the supporting inclined rod, the unstable supporting condition caused by too large or too small angle can be avoided to the greatest extent, and the reliability of the supporting structure is improved.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A supporting structure of a temporary girder is characterized in that the railway is erected on the temporary girder, the temporary girder is arranged on the top surface of a temporary girder strip base, the railway comprises a first track and a second track which are parallel to each other, the extending direction of the railway and the extending direction of the temporary girder are the same direction, and an oblique angle is formed between the extending direction of the temporary girder and the length direction of the temporary girder strip base; and is
The support structure is disposed below the stool beam in a vertical direction, and includes:
the supporting cross bar is arranged along a direction parallel to the extending direction of the toilet beam, one end of the supporting cross bar is positioned at the vertex position of the obtuse-angle oblique angle between the toilet beam and the toilet beam strip base, the other end of the supporting cross bar is positioned in the direction away from the toilet beam strip base and at a preset distance away from the vertex position of the obtuse-angle oblique angle, and the supporting cross bar supports the corresponding part of the toilet beam; and
and one end of each supporting inclined rod is fixed on one side of the temporary beam strip base close to the supporting cross rod, and the other end of each supporting inclined rod is fixedly connected with the supporting cross rod so as to support the supporting cross rod relative to the temporary beam strip base.
2. The support structure for a spar of claim 1, wherein the at least one support diagonal is arranged in pairs and comprises at least one pair of distal support diagonal; wherein
One end of each of the two far-end supporting inclined rods in the pair of far-end supporting inclined rods is fixed at the vertex position of an acute angle of the oblique crossing between the stool beam and the stool beam strip base; and is
The other end of one of the far-end supporting inclined rods is fixedly connected with the other end of the supporting cross rod, and the other end of the other far-end supporting inclined rod is positioned between the one end and the other end of the supporting cross rod.
3. The support structure for a spar of claim 2, wherein the at least one support diagonal further comprises at least one pair of intermediate support diagonals; wherein
One end of one middle supporting inclined rod and one end of the other middle supporting inclined rod in each pair of middle supporting inclined rods are fixed at the same position of one side, close to the supporting cross rod, of the toilet beam base, and the other ends of the two middle supporting inclined rods are fixedly connected with the corresponding positions of the supporting cross rod at intervals of preset distances; and is
And a plurality of pairs of middle supporting inclined rods are sequentially and uniformly arranged along the length direction of the temporary beam strip base relative to a plurality of fixing positions of the temporary beam strip base.
4. The support structure for a spar of claim 1, wherein the at least one support diagonal is arranged in pairs and comprises at least one pair of distal support diagonal; wherein
One end of one of the far-end supporting inclined rods is fixed at the vertex position of the acute-angle oblique angle between the stool beam and the stool beam strip base, and one end of the other far-end supporting inclined rod is fixed at the position, close to one side of the supporting cross rod, of the stool beam strip base and a preset distance away from the vertex of the acute-angle oblique angle; and is
The other ends of the two far-end supporting inclined rods are fixedly connected with the other end of the supporting cross rod.
5. The support structure for a spar of claim 4, wherein the at least one support diagonal further comprises at least one pair of intermediate support diagonals; wherein
One end of one middle supporting inclined rod and one end of the other middle supporting inclined rod in each pair of middle supporting inclined rods are fixed at fixed positions, which are close to one side of the supporting cross rod, of the portable beam base and are spaced by a preset distance; and is
The other ends of the two middle supporting inclined rods are fixedly connected with the same position of the supporting cross rod; and is
And a plurality of pairs of middle supporting inclined rods are sequentially and uniformly arranged along the length direction of the temporary beam strip base relative to a plurality of fixing positions of the temporary beam strip base.
6. The support structure of any one of claims 1 to 5, wherein concrete is poured between the support cross-bar and at least one of the support diagonal bars such that the support cross-bar and at least one of the support diagonal bars form a solid structure.
7. The support structure of the girder of claim 6, wherein the support structure further comprises at least one auxiliary support cross bar, an auxiliary support diagonal bar corresponding to each of the auxiliary support cross bars, and a fixing link; wherein
The at least one auxiliary supporting cross bar is arranged along the direction parallel to the extending direction of the toilet beam and is arranged on two sides of the supporting cross bar at equal intervals within the length range of the toilet beam strip base; and is
The length direction of the fixed connecting rods is perpendicular to the extending direction of the temporary beam, and the fixed connecting rods are fixed with one end, far away from the temporary beam strip base, of each auxiliary supporting cross rod and the other end of each supporting cross rod so as to be connected with each auxiliary supporting cross rod;
one end of each auxiliary supporting inclined rod is fixed on one side, close to the supporting cross rod, of the bed-pan beam base, and the other end of each auxiliary supporting inclined rod is fixedly connected with the corresponding auxiliary supporting cross rod so as to support the auxiliary supporting cross rod relative to the bed-pan beam base.
8. The support structure of claim 7, wherein concrete is poured between each of the auxiliary support cross bars and each of the auxiliary support diagonal bars and the fixing link, so that each of the auxiliary support cross bars and each of the auxiliary support diagonal bars and the fixing link are formed as a solid structure.
9. The support structure of a girder according to claim 1, wherein the length of the support beam is calculated according to the following formula:
wherein l is the length of the supporting transverse rod, S is the length in the length direction of the temporary beam strip base, the length between the intersection point of one of the longitudinal beams of the temporary beam and the temporary beam strip base and the intersection point of the other longitudinal beam of the temporary beam and the temporary beam strip base, W is the width between the two longitudinal beams of the temporary beam, Δ l is a distance constant, and the range of Δ l is 1m to 3 m.
10. The support structure of a girder according to claim 9, wherein an angle between the support rail and the support diagonal in a horizontal direction is calculated according to the following formula:
wherein, theta1The included angle between the supporting cross rod and the supporting oblique rod in the horizontal direction is N1, the length of the temporary beam strip base is N2, the width of the temporary beam strip base is N2, g is the gravity acceleration, 9.8N/kg is taken, S is the length of the temporary beam strip base in the length direction, the intersection point of one longitudinal beam of the temporary beam and the temporary beam strip base and the length of the intersection point of the other longitudinal beam of the temporary beam and the temporary beam strip base are S, W is the width between the two longitudinal beams of the temporary beam, CdIs the wind resistance coefficient and has the range of 0, 1]V is the running speed of the train and ranges from 30km/h to 80km/h, R is the wheel radius of the train, M is the head mass of the train and ranges from 120 tons to 180 tons, EMAXIs the maximum stiffness of the support rail; and is
Calculating an included angle between the support cross rod and the support diagonal rod in the vertical direction according to the following formula:
wherein, theta2Is an included angle between the supporting cross rod and the supporting oblique rod in the vertical direction, N1 is the length of the temporary beam strip base, N2 is the width of the temporary beam strip base, g is the gravity acceleration, 9.8N/kg is taken, S is the length of the temporary beam strip base in the length direction, the intersection point of one longitudinal beam of the temporary beam and the temporary beam strip base and the length between the other longitudinal beam of the temporary beam and the intersection point of the temporary beam strip base, W is the width between the two longitudinal beams of the temporary beam, CdIs the wind resistance coefficient and has the range of 0, 1]V is the running speed of the train and ranges from 30km/h to 80km/h, R is the wheel radius of the train, M is the head mass of the train and ranges from 120 tons to 180 tons, EMAXIs the maximum stiffness of the support rail.
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|---|---|---|---|
| CN202111447261.4A CN114182583B (en) | 2021-11-30 | Support structure of toilet beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111447261.4A CN114182583B (en) | 2021-11-30 | Support structure of toilet beam |
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| CN114182583A true CN114182583A (en) | 2022-03-15 |
| CN114182583B CN114182583B (en) | 2024-05-10 |
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