CN114319064A - Integral rigid frame bridge - Google Patents
Integral rigid frame bridge Download PDFInfo
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- CN114319064A CN114319064A CN202111466365.XA CN202111466365A CN114319064A CN 114319064 A CN114319064 A CN 114319064A CN 202111466365 A CN202111466365 A CN 202111466365A CN 114319064 A CN114319064 A CN 114319064A
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Abstract
The embodiment of the application discloses integral rigid frame bridge relates to the bridge engineering field, provides horizontal support for the rigid arm pier, has strengthened the bulk rigidity and the anti-seismic performance of structure, has optimized the structural stress of rigid frame bridge. The integral rigid frame bridge comprises rigid arm piers, a bridge deck and supporting pieces, wherein the rigid arm piers are erected on a foundation, and the number of the rigid arm piers is multiple; the bridge deck is arranged at the upper ends of the rigid arm piers, and the rigid arm piers are used for bearing the bridge deck; and the supporting piece is arranged between at least one group of two adjacent rigid arm piers in the plurality of rigid arm piers, and the rigid arm piers are rigidly connected with the supporting piece. The integral rigid frame bridge is used for train operation.
Description
Technical Field
The application relates to but not limited to the field of bridge engineering, in particular to an integral rigid frame bridge.
Background
A rigid frame bridge is characterized in that a main bearing structure is a rigid frame structure formed by fixedly connecting a bridge deck and rigid arm piers, the rigid arm piers bear vertical pressure of the bridge deck and bear bending moment and horizontal thrust, and reinforced concrete rigid frames or rigid frames are more and more frequent in railway bridges along with large-scale development of urban construction and continuous improvement of traffic density networks.
Sometimes, according to actual needs and functional requirements, when the rigid frame bridge needs to be connected with a high-fill soil foundation, certain difficulty is brought to the design of a rigid frame, particularly, due to the fact that the high-fill soil foundation has higher soil pressure, the design of a side rigid arm pier is more difficult, and therefore the integral rigid frame bridge is provided.
Disclosure of Invention
The embodiment of the application provides an integral rigid frame bridge, provides horizontal support for the rigid arm pier, has strengthened the bulk rigidity and the anti-seismic performance of structure, has optimized the structural stress of rigid frame bridge.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
the embodiment of the application provides an integral rigid frame bridge, which comprises rigid arm piers, a bridge deck and support pieces, wherein the rigid arm piers are erected on a foundation, and the number of the rigid arm piers is set to be multiple; the bridge deck is arranged at the upper ends of the rigid arm piers, and the rigid arm piers are used for carrying the bridge deck; and the supporting piece is arranged between at least one group of two adjacent rigid arm piers in the plurality of rigid arm piers, and the rigid arm piers are rigidly connected with the supporting piece.
The integral rigid frame bridge provided by the embodiment of the application is characterized in that the supporting piece is arranged between at least one group of two adjacent rigid arm piers in the plurality of rigid arm piers, and the rigid arm piers are rigidly connected with the supporting piece, so that the rigid arm piers and the supporting piece form a whole body for carrying a bridge deck, and external force is transmitted to the supporting piece and the rigid arm piers from the bridge deck. On the other hand, compared with the prior art that the rigid arm pier, the supporting piece and the bridge floor are contacted simultaneously, the integral rigidity and the anti-seismic performance of the structure are enhanced, the stress of the structure is facilitated, and the longitudinal rigidity of the structure is increased.
In one possible implementation manner of the present application, there are at least three rigid arm piers, and a support member is disposed between every two adjacent rigid arm piers.
The embodiment of the application provides an integral rigid frame bridge, when integral rigid frame bridge is the haplopore, the quantity of rigid arm mound is two, set up the structure atress that support piece can optimize whole rigid frame bridge between two rigid arm mounds, when integral rigid frame bridge is porous, the quantity of rigid arm mound is three at least, if only set up support piece between the adjacent rigid arm mound of part, then can lead to the atress of rigid frame bridge unbalanced, consequently, in order to solve the unbalanced problem of rigid frame bridge atress, the application has provided an optimal technical scheme, when the rigid frame bridge is porous, all be equipped with support piece between the rigid arm mound of every adjacent two.
In one possible implementation of the present application, all the supports are located on the same horizontal plane.
The integral rigid frame bridge that this application embodiment provided, when the rigid frame bridge is porous, the quantity of rigid arm mound is three at least, all be equipped with support piece between every two adjacent rigid arm mounds, then the quantity of support piece is two at least, if all support pieces do not lie in the coplanar, then the rigid arm mound passes through the time difference of support piece transmission bridge floor pressure, can not act on the rigid arm mound simultaneously, can cause the danger of bridge floor slope under the long-time effect, consequently, require all support pieces to be located same horizontal plane.
In one possible implementation of the present application, a plurality of supporting members are provided between adjacent two rigid-arm piers,
the embodiment of the application provides an integral rigid frame bridge, a plurality of support piece are arranged along the extending direction interval of rigid arm mound, owing to set up support piece between two adjacent rigid arm mounds, can strengthen rigid frame bridge's bulk rigidity and anti-seismic performance, consequently, for the effect is showing more, be equipped with a plurality of support piece between two continuous rigid arm mounds, and a plurality of support piece are arranged along the extending direction interval of rigid arm mound, further strengthen rigid frame bridge's bulk rigidity and anti-seismic performance.
In a possible implementation of the present application, the support element is a plate-shaped structure, and the plane of the plate-shaped structure extending in the direction is parallel to the deck.
The embodiment of the application provides an integral rigid frame bridge, set up support piece into platelike structure, support piece is bigger with the area of contact of bridge floor, it is bigger to provide the holding power for the rigid arm mound, and platelike structure's extending direction place plane is parallel with the bridge floor, keep the level between support piece and the bridge floor, the pressure of bridge floor can be even transmit support piece on, avoid the pressure of bridge floor to act on support piece certain region for a long time, lead to support piece part regional intensity to become invalid, the maintenance cost has been reduced.
In one possible implementation of the present application, the support member is provided with lightening holes, and the lightening holes are opened on a plane along the extension direction of the plate-shaped structure.
The integral rigid frame bridge that this application embodiment provided is provided with support piece between two adjacent rigid arm mounds, rigid connection between support piece and the rigid arm mound, although support piece provides the horizontal support for the rigid arm mound, advantages such as rigid frame bridge structure atress have been optimized, but support piece self also has some gravity, be the part that additionally adds to the rigid arm mound, in order to seek a balance between the two, be equipped with the lightening hole on support piece, and the lightening hole is seted up on the plane of place along platelike structure's extending direction, reduce self gravity as far as.
In one possible implementation of the present application, the lightening holes are a plurality of, and the lightening holes are uniformly distributed on the support member.
According to the integral rigid frame bridge provided by the embodiment of the application, if only one lightening hole is arranged on the supporting piece, the lightening hole is too small, the lightening effect is very little, and if the lightening hole is too large, the supporting strength of the supporting piece can be influenced, so that a plurality of lightening holes are arranged on the supporting piece, and the plurality of lightening holes cannot be gathered in a certain area on the supporting piece and are uniformly distributed on the supporting piece.
In one possible implementation manner of the present application, the lightening holes are in the shape of long strips, are parallel to the length direction of the bridge deck, and are arranged at intervals along the width direction of the bridge deck.
According to the integral rigid frame bridge provided by the embodiment of the application, the lightening holes are arranged in the shape of a long strip, and compared with the lightening holes arranged in other shapes, the number of the lightening holes formed in the supporting piece is the minimum under the condition that the lightening effect is the best.
In a possible implementation manner of the present application, chamfers are provided at both ends of the lightening holes close to the rigid arm pier.
The integral rigid frame bridge that this application embodiment provided sets up the lightening hole on support piece, leads to the lightening hole to be close to the both sides of rigid arm mound and has formed the atress weak point, consequently, all is equipped with the chamfer at the both ends that the lightening hole is close to the rigid arm mound for support piece's both ends are bigger with support piece's connection area, and joint strength is bigger.
In a possible implementation manner of the application, the bridge comprises the ear walls, the ear walls are respectively arranged at the end parts of two ends of the bridge floor, and the ear walls are respectively symmetrical along the length direction and the width direction of the bridge floor.
The integral rigid frame bridge provided by the embodiment of the application has the advantages that the ear walls are arranged at the end parts of the two ends of the bridge floor respectively, the ear walls are symmetrical along the length direction and the width direction of the bridge floor respectively and used for restraining soil bodies on the side surfaces of the end parts of the two ends of the bridge floor and preventing the soil bodies from sinking and deforming, risks are increased for train operation, and due to the fact that the filling height is large, if the ear walls are not arranged at the connection end with a roadbed, the height of the counterfort retaining walls on the two sides is almost equal to that of the rigid frame, engineering quantity and investment are increased.
In a possible implementation manner of the application, the retaining wall comprises retaining walls, the retaining walls are arranged at the end parts of two ends of the rigid arm pier, and the ear walls and the retaining walls are correspondingly arranged.
The integral rigid frame bridge that this application embodiment provided, the barricade indicates that the supporting road bed fills in soil or the hillside soil body, prevents to fill in soil or the soil body warp the unstable structure, establish the barricade at the tip at the both ends of rigid arm mound, regard the barricade as wing wall or abutment, can play the effect of protecting the platform or connecting the embankment, can also prevent the landslide, correspond earning wall and barricade and set up, can reduce the fender soil height of barricade, the soil pressure of barricade has been reduced, thereby can realize reducing the mesh of barricade engineering volume.
In one possible implementation of the present application, the parapet and the retaining wall intersect.
The embodiment of the application provides an integral rigid frame bridge, the tip at the both ends of bridge floor sets up the earrings, the tip at the both ends of rigid arm mound sets up the barricade, all protect the pontic, the earrings set up the tip at the bridge floor both ends, the barricade sets up the tip at the both ends of rigid arm mound, the earrings correspond the setting with the barricade, if the earrings with the barricade in the vertical direction of bridge floor non-intersect, then atress weak point can appear in the non-intersecting part in the both sides of pontic, the risk of train operation has been increased, in order to reduce the risk of train operation, make earrings and barricade intersect at the vertical direction of bridge floor.
In one possible implementation of the present application, the foundation is located in a foundation layer below the ground surface and used for supporting the rigid-arm pier and the bridge deck.
The integral rigid frame bridge that this application embodiment provided, the basis is the bridge structures thing directly with the lower part of ground contact, is the important component of bridge substructure. The foundation is used for supporting the steel-arm pier and the bridge deck, and is used for bearing all loads transmitted by the bridge body and transmitting all the loads and self loads to the foundation, so that the foundation is required to be arranged in a foundation layer below the ground surface for the safe and normal use of the bridge, the foundation is required to be arranged, and the foundation is required to have enough strength, rigidity and overall stability, so that the bridge body does not generate overlarge horizontal displacement or uneven settlement.
In one possible implementation of the present application, the rigid arm pier is rigidly connected to the deck.
The integral rigid frame bridge that this application embodiment provided, rigid connection means between two connecting pieces, when a piece produced the displacement or atress, the individual that links to each other does not want to produce displacement or relative deformation to first piece, make two connections become a whole, in this application embodiment, rigid arm mound and support piece rigid connection, rigid arm mound and support piece become a whole, then with rigid arm mound and bridge floor rigid connection for rigid arm mound, bridge floor and support piece become a whole, with bridge floor and rigid arm mound rigid connection, large-scale support has been saved, structural integrity is strong, the anti-seismic performance is good.
Drawings
FIG. 1 is a front view of a monolithic rigid frame bridge with a single aperture in an embodiment of the present application;
FIG. 2 is a top view of a single aperture of a monolithic rigid frame bridge according to an embodiment of the present application;
FIG. 3 is a schematic view of a monolithic rigid frame bridge in an embodiment of the present application taken along a support member along a single hole;
FIG. 4 is a front view of the integral rigid frame bridge of the embodiment of the present application when it is porous;
FIG. 5 is a top view of a monolithic rigid frame bridge according to an embodiment of the present application when porous;
FIG. 6 is a schematic view of a monolithic rigid frame bridge according to an embodiment of the present application taken along a strut when it is porous;
FIG. 7 is a front view of the multi-layered support members between the rigid-arm piers when the integral rigid-frame bridge is porous in the embodiment of the present application.
Reference numerals
1-a rigid arm pier; 2-bridge deck; 3-a support; 31-lightening holes; 4-ear wall; 5-retaining wall; 6-base; 61-a cushion cap; 62-drilling pile.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.
In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass. The bridge generally consists of an upper structure, a lower structure, a support and an auxiliary structure, and as shown in fig. 1, the upper structure is also called a bridge span structure, and comprises a bridge deck 2 which is a main structure for crossing obstacles; the bridge deck 2 can meet the operation of an automobile, and a ballast bed and the like can be erected on the bridge deck 2 and used for the operation of a bullet train or a train, and the lower structure comprises a bridge abutment, a rigid arm pier 1 and a foundation 6; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the rigid arm pier 1 or the abutment; the auxiliary structures refer to bridge end butt straps, tapered revetments, diversion works and the like.
The embodiment of the application provides an integral rigid frame bridge, as shown in fig. 1, fig. 2 and fig. 3, comprising a rigid arm pier 1, a bridge deck 2 and a support member 3, wherein the rigid arm pier 1 is erected on a foundation and is provided in plurality; the bridge deck 2 is arranged at the upper ends of the rigid arm piers 1, and the rigid arm piers 1 are used for carrying the bridge deck 2; and the supporting piece 3 is arranged between at least one group of two adjacent rigid arm piers 1 in the plurality of rigid arm piers 1, and the rigid arm piers 1 are rigidly connected with the supporting piece 3.
The integral rigid frame bridge provided by the embodiment of the present application, as shown in fig. 1, 2 and 3, since the support member 3 is provided between at least one set of two adjacent rigid arm piers 1 among the plurality of rigid arm piers 1, simultaneously rigid arm mound 1 and support piece 3 rigid connection for rigid arm mound 1 and support piece 3 form a whole and are used for carrying on bridge floor 2, compare in the correlation technique rigid arm mound 1 and directly be connected with bridge floor 2, be equipped with support piece 3 between two adjacent rigid arm mounds 1 in the integral rigid frame bridge that this application provided, external force acts on rigid arm mound 1 and support piece 3 two parts through bridge floor 2, on the one hand, support piece 3 provides a horizontal support for rigid arm mound 1, has not only reduced the slenderness ratio and the calculation length of rigid arm mound 1 and the biggest moment of bending of rigid arm mound 1, and also can effectively improve the height of rigid arm mound 1, makes it also be applicable to high road-fill road bed foundation section. On the other hand, compared with the simultaneous contact of the rigid arm pier 1 and the bridge deck 2, the simultaneous contact of the rigid arm pier 1 and the support piece 3 with the bridge deck 2 enhances the overall rigidity and the anti-seismic performance of the structure, is beneficial to the stress of the structure and increases the longitudinal rigidity of the structure.
Referring to fig. 1, 2 and 3, it should be specifically described that the bridge deck 2 is a portion for vehicles or a plane on a bridge for walking or traveling, the rigid-arm pier 1 is used for supporting the bridge deck 2, when the integral rigid-frame bridge is a single hole, the number of the rigid-arm piers 1 is two, when the integral rigid-frame bridge is a multiple hole, the number of the rigid-arm piers 1 is at least three, and for the structural integrity of the integral rigid-frame bridge is strong and the seismic performance is good, the embodiment of the present invention provides a preferable scheme, so that the rigid-arm piers 1 are rigidly connected with the bridge deck 2. Rigid connection means between two connecting pieces, when one piece generates displacement or stress, an individual connected with the connecting piece does not want to generate displacement or relative deformation for the first piece, so that the two pieces are connected into a whole, in the embodiment of the application, the rigid arm pier 1 is rigidly connected with the supporting piece 3, the rigid arm pier 1 is integrally connected with the supporting piece 3, then the rigid arm pier 1 is rigidly connected with the bridge deck 2, so that the rigid arm pier 1, the bridge deck 2 and the supporting piece 3 are integrally formed, the bridge deck 2 and the whole bridge are stressed, the rigid arm pier 1 not only bears the vertical pressure caused by the load on the bridge deck 2, but also bears the horizontal thrust by bending moment, the bridge deck 2 is rigidly connected with the rigid arm pier 1, a large-scale support is omitted, the structural integrity is strong, and the anti-seismic performance is good.
Referring to fig. 1, 2 and 3, the foundation 6 is the lowest part of the bridge structure directly contacting the foundation, which is an important component of the bridge substructure. Bearing all the loads transmitted from the bridge body and transmitting all the loads and the loads of the bridge body to the foundation, therefore, for the safe and normal use of the bridge, it is necessary to provide the foundation 6 in the foundation layer below the ground surface for supporting the rigid-arm pier 1 and the bridge deck 2, and therefore not only the foundation 6 but also the foundation 6 is required to have sufficient strength, rigidity and overall stability so that the bridge body does not generate excessive horizontal displacement or uneven settlement.
Referring to fig. 1, the type of bridge foundation 6 may be classified into: open cut foundation, pile foundation, open caisson foundation, caisson foundation and tubular column foundation, pile foundation 6 comprises many drilled piles 62 and the cushion cap 61 of connecting the pile top of driving into or sinking into soil, rigid-arm pier 1 acts on cushion cap 61, external force distributes each drilled pile 62 pile head through cushion cap 61, and then through drilled pile 62 pile body and drilled pile 62 pile end transmit power to around soil and drilled pile 62 pile end deep layer soil in, the mode of pile foundation 6 is lighter than other modes structure, the mechanization degree of construction is higher, the construction progress is faster, in order to practice thrift the cost, this application selects pile foundation 6.
In some embodiments provided in the present application, referring to fig. 4, 5 and 6, in a plurality of rigid-arm piers 1, at least a support member 3 is disposed between two adjacent rigid-arm piers 1 in a group, and the rigid-arm piers 1 and the support member 3 are rigidly connected, such that the rigid-arm piers 1 and the support member 3 form a whole body for bearing a bridge deck 2, when the integral rigid-arm bridge is a single-hole bridge, the number of the rigid-arm piers 1 is two, and when the two rigid-arm piers 1 are disposed between the support members 3, structural stress of the whole rigid-arm bridge can be optimized, when the integral rigid-arm bridge is a multi-hole bridge, the number of the rigid-arm piers 1 is greater than or equal to three, and if only the support member 3 is disposed between a part of the adjacent rigid-arm piers 1, the stress of the bridge deck 2 as a whole is unbalanced, the construction difficulty is increased, and the construction cost is increased, the number of rigid arm mound 1 is three at least, all is equipped with support piece 3 between every two adjacent rigid arm mounds 1, and rigid connection between support piece 3 and the rigid arm mound 1 provides a horizontal support for rigid arm mound 1, reduces construction cost.
It should be added that, as shown in fig. 4, 5 and 6, when the integral rigid frame bridge is porous, the number of the rigid arm piers 1 is at least three, and the support members 3 are arranged between every two adjacent rigid arm piers 1, the number of the support members 3 is at least two, if the plurality of support members 3 are respectively arranged, and are not located on the same horizontal plane or partially not located on the same horizontal plane, on one hand, the rigid arm piers 1 cannot simultaneously act on the rigid arm piers 1 due to different time periods of transferring the rigid arm piers 1 to the deck 2 through the support members 3, and the deck 2 may be inclined due to a long time period, on the other hand, the length-to-width ratio and the calculated length of the rigid arm piers 1 are different due to different horizontal planes of the support members 3, which increases the cost and difficulty for construction, for this purpose, this application provides a preferable scheme, when the integral rigid frame bridge is porous, between each adjacent two of the rigid arm piers 1, there is provided a support member 3 such that all the support members 3 are located on the same horizontal plane.
As shown in fig. 7, in the plurality of rigid arm piers 1, at least one support member 3 is arranged between a group of two adjacent rigid arm piers 1, and the rigid arm piers 1 and the support member 3 are rigidly connected, so that the rigid arm piers 1 and the support member 3 form a whole for carrying the bridge deck 2, and the support member 3 provides a horizontal support for the rigid arm piers 1, thereby not only reducing the slenderness ratio and the calculated length of the rigid arm piers 1 and the maximum bending moment of the rigid arm piers 1, but also effectively improving the height of the rigid arm piers 1, so that the rigid arm piers are also suitable for high-fill road foundation sections. On the other hand, the rigid arm piers 1, the support pieces 3 are simultaneously contacted with the bridge deck 2, compared with the contact of the rigid arm piers 1 and the bridge deck 2, the overall rigidity and the anti-seismic performance of the structure are enhanced, the structural stress is facilitated, the longitudinal rigidity of the structure is increased, for more remarkable effect, a plurality of support pieces 3 can be arranged between two adjacent rigid arm piers 1, and the support pieces 3 are arranged at intervals along the extending direction of the rigid arm piers 1.
It should be added that, as shown in fig. 4, 5 and 6, the support 3 is disposed between two adjacent rigid-arm piers 1, and the support member 3 is rigidly connected with the rigid arm pier 1, so that the rigid arm pier 1 and the support member 3 form a whole for carrying the bridge deck 2, the support member 3 provides a horizontal support for the rigid arm pier 1, the support member 3 can be configured as a strip, a cylinder and the like, however, the contact area between the support member 3 and the bridge deck 2 determines the extent of the horizontal support provided by the support member 3 for the rigid arm pier 1, therefore, in some embodiments provided by the present application, the support member 3 is provided as a plate-shaped structure, so that the plane in which the plate-shaped structure extends is parallel to the bridge deck 2, and the contact area between the support member 3 and the bridge deck 2 is larger than that in other shapes of the support member 3, resulting in wider and wider support members 3 for providing the horizontal support for the rigid-arm pier 1.
In other embodiments provided by the present application, referring to fig. 4, 5 and 6, a support member 3 is disposed between two adjacent rigid arm piers 1, the support member 3 is rigidly connected to the rigid arm pier 1, although the support member 3 provides horizontal support for the rigid arm pier 1, and optimizes the stress of the rigid frame bridge structure, the support member 3 itself also has a part of gravity, which acts on the rigid arm pier 1, and the requirement for the rigid arm pier 1 is more strict, in order to seek a balance between the two, both the structure of the integral rigid frame bridge is optimized and the difficulty of processing the rigid arm pier 1 is reduced, a lightening hole 31 may be disposed on the support member 3, by disposing the lightening hole 31, the lightening hole 31 is disposed on the plane along the extension direction of the plate-shaped structure, a part of gravity acting on the rigid arm pier 1 is reduced, because the support member 3 is a plate-shaped structure, if the lightening hole 31 is disposed outside the plane along the extension direction of the plate-shaped structure, that is, the position of the lightening holes 31 is parallel to the bridge deck 2, which may affect the rigidity of the supporting members 3, and the rigid connection between the supporting members 3 and the rigid-arm pier 1, if the supporting members 3 are damaged, the whole body needs to be replaced, which results in great maintenance cost, therefore, the lightening holes 31 are arranged on the plane along the extending direction of the plate-shaped structure.
It should be noted that, as shown in fig. 6, the lightening holes 31 are formed in the supporting member 3 for reducing some gravity of the supporting member 3 itself, and therefore, the present application is not limited to the shape, size and number of the lightening holes 31 formed in the supporting member 3 and whether the lightening holes 31 are through holes or blind holes.
Further, as shown in fig. 4, 5 and 6, the support member 3 is provided with a plurality of lightening holes 31, the number of the lightening holes 31 may be one or more, if only one lightening hole 31 is provided on the support member 3, the lightening hole 31 is too small, the lightening effect is very little, and if the lightening hole 31 is too large, the support strength of the support member 3 is affected, so that it is difficult to achieve the purpose of satisfying the lightening and simultaneously ensuring the support strength and the rigidity of the support member 3 by providing one lightening hole 31 on the support member 3, therefore, the present application provides a preferable scheme, and a plurality of lightening holes 31 may be provided on the support member 3 to achieve the purpose of simultaneously lightening and ensuring the support strength. In order to make the effect of the support strength more remarkable, it may be required that the plurality of lightening holes 31 cannot be gathered in the collusion area of the support 3, and the plurality of lightening holes 31 should be uniformly distributed on the support 3.
Furthermore, as shown in fig. 1, 2 and 3, how to provide a plurality of lightening holes 31 on the supporting member 3, in order to ensure that the number of lightening holes 31 provided on the supporting member 3 is the minimum under the condition of the best lightening effect, it is preferable that the shape of the lightening holes 31 is a strip shape, and the lightening holes 31 are parallel to the length direction of the bridge deck 2 and are arranged at intervals along the width direction of the bridge deck 2, and it should be specifically noted that the length of the strip-shaped lightening holes 31 should be smaller than the length of the supporting member 3.
As shown in fig. 4, 5 and 6, a plurality of lightening holes 31 are formed in the support 3, so that stressed weak points are formed at two sides of the lightening holes 31 close to the rigid arm pier 1, when an external force acts on the support 3, the risk of fracture of the two sides of the lightening holes 31 close to the rigid arm pier 1 is increased sharply, and in order to reduce the risk, chamfers are arranged at two ends of the lightening holes 31 close to the rigid arm pier 1, so that the connection area between the two ends of the lightening holes 31 and the support 3 is larger, and the connection strength is higher.
Similarly, not only the lightening holes 31 are close to the two sides of the rigid arm pier 1 to form stress weak points, but also the support piece 3 is arranged between the two adjacent rigid arm piers 1, so that the part between the two rigid arm piers 1 and the support piece 3 are also stress weak points, and therefore, chamfers are also arranged at the part between the two rigid arm piers 1 and the support piece 3, so that the connecting area between the two ends of the support piece 3 and the two adjacent rigid arm piers 1 is larger, and the connecting strength is also larger.
In other embodiments provided by the present application, referring to fig. 1 and 4, the stud walls 4 are respectively disposed at the ends of the two ends of the bridge deck 2, the stud walls 4 are respectively symmetrical along the length direction and the width direction of the bridge deck 2, and are used for restraining soil bodies on the side surfaces of the ends of the two ends of the bridge deck 2, preventing the soil bodies from sinking and deforming, increasing risks for train operation, and increasing the construction amount and investment due to the large filling height, if the stud walls 4 are not disposed at the connection end with the roadbed, the height of the counterfort retaining walls 5 on the two sides is almost equal to the height of the rigid frame.
Specifically, as shown in fig. 2 and 5, the retaining wall 5 is a structure for supporting a roadbed filling soil or a hillside soil body and preventing the filling soil or the soil body from being deformed and unstable, the retaining wall 5 is disposed at the end portions of both ends of the rigid-arm pier 1, the retaining wall 5 is used as a wing wall or a bridge abutment, and can play a role of protecting a platform or connecting a embankment, and can also prevent landslide, and the ear wall 4 and the retaining wall 5 are correspondingly disposed, so that the retaining height of the retaining wall 5 can be reduced, the soil pressure of the retaining wall 5 can be reduced, and the purpose of reducing the engineering quantity of the retaining wall 5 can be achieved.
Preferably, referring to fig. 1, 4 and 7, the end parts of the two ends of the bridge deck 2 are provided with the ear walls 4, the end parts of the two ends of the rigid-arm pier 1 are provided with the retaining walls 5, which protect the bridge body, the ear walls 4 are arranged at the end parts of the two ends of the bridge deck 2, the retaining walls 5 are arranged at the end parts of the two ends of the rigid-arm pier 1, the ear walls 4 and the retaining walls 5 are arranged correspondingly, if the ear walls 4 and the retaining walls 5 do not intersect in the vertical direction of the end parts of the two ends of the bridge deck 2, the stress weak points can occur at the non-intersecting parts of the two sides of the bridge body, the risk of train operation is increased, and in order to reduce the risk of train operation, the ear walls 4 and the retaining walls 5 intersect in the vertical direction of the bridge deck 2.
The application provides an integral rigid frame bridge, as shown in fig. 4, 5 and 6, because in a plurality of rigid arm piers 1, at least a support piece 3 is arranged between a group of two adjacent rigid arm piers 1, and simultaneously, the rigid arm piers 1 and the support piece 3 are rigidly connected, so that the rigid arm piers 1 and the support piece 3 form a whole body for carrying a bridge deck 2, on one hand, the support piece 3 provides a horizontal support for the rigid arm piers 1, thereby not only reducing the slenderness ratio and the calculated length of the rigid arm piers 1 and the maximum bending moment of the rigid arm piers 1, but also effectively improving the height of the rigid arm piers 1, and enabling the integral rigid arm piers to be also suitable for a high-fill road foundation section. On the other hand, compared with the simultaneous contact of the rigid arm pier 1 and the support piece 3 with the bridge deck 2, the contact of the rigid arm pier 1 with the bridge deck 2 enhances the integral rigidity and the anti-seismic performance of the structure, is beneficial to the stress of the structure, the longitudinal rigidity of the structure is increased, the application also provides a referable construction method and sequence for the integral rigid frame bridge, the construction method provided by the application is divided into five steps, the first step, constructing the foundation 6 of the rigid frame bridge, wherein the foundation 6 of the rigid frame bridge comprises a bearing platform 61 and a bored pile 62, in order to save the construction time and the construction cost, the bored pile 62 and the cap 61 are constructed simultaneously, after the foundation 6 is constructed, the second step is carried out, the rigid arm pier 1 is constructed, the rigid arm pier 1 is prefabricated and can be placed on a bearing platform 61, the third step is carried out, the supporting piece 3, the bridge floor 2 and the ear wall 4 are cast in situ, and the fourth step is carried out, wherein retaining walls 5 are arranged at the end parts of the two sides of the rigid arm pier 1; and fifthly, constructing the roadbed on the two sides of the bridge deck 2.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (14)
1. A monolithic rigid frame bridge, comprising:
the rigid arm piers are erected on the foundation, and the number of the rigid arm piers is multiple;
the bridge deck is arranged at the upper ends of the rigid arm piers, and the rigid arm piers are used for bearing the bridge deck;
and the supporting piece is arranged between at least one group of two adjacent rigid arm piers in the plurality of rigid arm piers, and the rigid arm piers are rigidly connected with the supporting piece.
2. The integral rigid frame bridge of claim 1, wherein said number of said rigid arm piers is at least three, and said support member is provided between every two adjacent ones of said rigid arm piers.
3. The unitary rigid frame bridge of claim 2, wherein all of said supports are located on the same horizontal plane.
4. The integral rigid frame bridge according to claim 2, wherein a plurality of said supporting members are provided between two adjacent rigid arm piers, and are arranged at intervals along the extending direction of said rigid arm piers.
5. A monolithic rigid frame bridge according to any one of claims 1 to 4, wherein said supporting elements are plate-like structures, the plane of extension of said plate-like structures being parallel to said deck.
6. The integral rigid frame bridge of claim 5, wherein said support members are provided with lightening holes, said lightening holes being provided on a plane along the extension direction of said plate-like structure.
7. The integral rigid frame bridge of claim 6, wherein said lightening holes are plural and are uniformly distributed on said support member.
8. The integral type rigid frame bridge according to claim 7, wherein the lightening holes are in the shape of long strips, are parallel to the length direction of the bridge deck, and are arranged at intervals along the width direction of the bridge deck.
9. The integral rigid frame bridge of claim 8, wherein the lightening holes are chamfered near both ends of the rigid-arm pier.
10. The integral type rigid frame bridge according to claim 1, comprising stud walls provided at both ends of said bridge deck, respectively, said stud walls being symmetrical in a length direction and a width direction of said bridge deck, respectively.
11. The integral rigid frame bridge according to claim 10, comprising retaining walls, wherein the retaining walls are disposed at the ends of both ends of the rigid-arm pier, and the ear walls and the retaining walls are disposed correspondingly.
12. The unitary rigid frame bridge of claim 11, wherein said ear wall and said retaining wall intersect.
13. The unitary rigid frame bridge of claim 1, further comprising a foundation in a foundation layer below ground surface for supporting said rigid pier and said deck.
14. The unitary rigid frame bridge of claim 13, wherein said rigid arm pier is rigidly connected to said deck.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004156292A (en) * | 2002-11-06 | 2004-06-03 | Nippon Steel Corp | Three dimensional rigid frame structure |
| CN102747677A (en) * | 2012-07-27 | 2012-10-24 | 中铁三局集团有限公司 | Bridge and construction method thereof |
| CN105421484A (en) * | 2015-12-25 | 2016-03-23 | 中铁十四局集团有限公司 | Deep pond spanning structure |
| CN106702910A (en) * | 2016-12-29 | 2017-05-24 | 中交第三航务工程局有限公司 | Main girder construction process for extradosed cable-stayed bridge with double towers and double cable planes |
| CN107974942A (en) * | 2017-11-30 | 2018-05-01 | 中铁二十局集团有限公司 | A kind of abrupt slope side rigid frame-continuous girder end bay construction method |
| CN208039022U (en) * | 2018-04-12 | 2018-11-02 | 中交第一公路勘察设计研究院有限公司 | A kind of no binder ribbed abutments |
| CN208136700U (en) * | 2018-01-04 | 2018-11-23 | 广州瀚阳工程咨询有限公司 | Novel flexible substructure is without support prestressed concrete continuous rigid-framed bridge beam |
| CN209652974U (en) * | 2018-12-12 | 2019-11-19 | 广州市市政工程设计研究总院有限公司 | A kind of channel design with loss of weight bottom plate |
| CN111455855A (en) * | 2020-04-16 | 2020-07-28 | 中交一公局第四工程有限公司 | Construction process of main bridge of double-tower single-cable-plane short-tower cable-stayed bridge |
| CN211142763U (en) * | 2019-09-04 | 2020-07-31 | 中铁上海设计院集团有限公司 | Structure for protecting bridge pile foundation from being influenced by horizontal braking force of automobile |
| CN213038218U (en) * | 2020-06-09 | 2021-04-23 | 云南省公路科学技术研究院 | Predictive continuous rigid frame bridge capable of supplementing tensioning prestress |
| CN113585044A (en) * | 2021-08-13 | 2021-11-02 | 浙江数智交院科技股份有限公司 | Bridge structure |
-
2021
- 2021-12-03 CN CN202111466365.XA patent/CN114319064A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004156292A (en) * | 2002-11-06 | 2004-06-03 | Nippon Steel Corp | Three dimensional rigid frame structure |
| CN102747677A (en) * | 2012-07-27 | 2012-10-24 | 中铁三局集团有限公司 | Bridge and construction method thereof |
| CN105421484A (en) * | 2015-12-25 | 2016-03-23 | 中铁十四局集团有限公司 | Deep pond spanning structure |
| CN106702910A (en) * | 2016-12-29 | 2017-05-24 | 中交第三航务工程局有限公司 | Main girder construction process for extradosed cable-stayed bridge with double towers and double cable planes |
| CN107974942A (en) * | 2017-11-30 | 2018-05-01 | 中铁二十局集团有限公司 | A kind of abrupt slope side rigid frame-continuous girder end bay construction method |
| CN208136700U (en) * | 2018-01-04 | 2018-11-23 | 广州瀚阳工程咨询有限公司 | Novel flexible substructure is without support prestressed concrete continuous rigid-framed bridge beam |
| CN208039022U (en) * | 2018-04-12 | 2018-11-02 | 中交第一公路勘察设计研究院有限公司 | A kind of no binder ribbed abutments |
| CN209652974U (en) * | 2018-12-12 | 2019-11-19 | 广州市市政工程设计研究总院有限公司 | A kind of channel design with loss of weight bottom plate |
| CN211142763U (en) * | 2019-09-04 | 2020-07-31 | 中铁上海设计院集团有限公司 | Structure for protecting bridge pile foundation from being influenced by horizontal braking force of automobile |
| CN111455855A (en) * | 2020-04-16 | 2020-07-28 | 中交一公局第四工程有限公司 | Construction process of main bridge of double-tower single-cable-plane short-tower cable-stayed bridge |
| CN213038218U (en) * | 2020-06-09 | 2021-04-23 | 云南省公路科学技术研究院 | Predictive continuous rigid frame bridge capable of supplementing tensioning prestress |
| CN113585044A (en) * | 2021-08-13 | 2021-11-02 | 浙江数智交院科技股份有限公司 | Bridge structure |
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