CN114232466B - Bridge transverse limiting device based on tension-compression bar model and construction method - Google Patents
Bridge transverse limiting device based on tension-compression bar model and construction method Download PDFInfo
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- CN114232466B CN114232466B CN202210066901.5A CN202210066901A CN114232466B CN 114232466 B CN114232466 B CN 114232466B CN 202210066901 A CN202210066901 A CN 202210066901A CN 114232466 B CN114232466 B CN 114232466B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention discloses a bridge transverse limiting device based on a tension-compression bar model and a construction method, wherein the device comprises a vertical supporting limiting piece (1), a horizontal drawknot piece (41) and an inclined compression supporting piece (43); the pair of vertical supporting limiting pieces (1) are respectively arranged at two sides of the bridge (2), the upper ends of the pair of inclined pressure-bearing supporting pieces (43) are respectively fixedly connected with the lower ends of the pair of vertical supporting limiting pieces (1), an obtuse angle included angle is formed between the inclined pressure-bearing supporting pieces (43) and the vertical supporting limiting pieces (1), and the lower ends of the pair of inclined pressure-bearing supporting pieces (43) are respectively inclined downwards inwards and extend and are fixed on the pier structure of the bridge (2); the horizontal drawknot piece (41) is horizontally drawed between the connecting nodes of the pair of inclined compression supporting pieces (43) and the pair of vertical supporting limiting pieces (1). The invention can provide stable limit on two sides of the bridge and ensure the stability and safety in the process of lifting the bridge.
Description
Technical Field
The invention relates to a bridge construction technology, in particular to a bridge transverse limiting device based on a tension-compression bar model and a construction method.
Background
In the jacking construction process of the bridge, in order to avoid that the structural displacement of the bridge in the jacking process develops towards an unexpected direction, a limiting structure is often required to be arranged on the periphery of a structural object, and the jacking displacement direction is limited to be fixed through the limiting structure, as shown in fig. 1 and fig. 2. Because the load of the structure is large, the lateral force generated when the deflection occurs is large, and the corresponding limiting structure is required to have larger structural rigidity. However, the limit structure is usually a temporary structure, such as a steel structure, a reinforced concrete structure, etc., and needs to be removed after the jacking construction is completed, which inevitably causes great waste.
The bridge is influenced by the transverse deviation acting force, the limit structure of the bridge needs to resist larger horizontal force, and the limit effect cannot be achieved by a simple column structure, so that the transverse limit structure is usually constructed into a complex bridge structure when the bridge is lifted, foundation support is needed, the cost is high, the construction period is long, the foundation support construction difficulty is high, and the construction progress of the bridge is greatly influenced.
Disclosure of Invention
The invention aims to provide a bridge transverse limiting device based on a tension-compression bar model and a construction method, which can provide stable limiting on two sides of a bridge and ensure stability and safety in the process of lifting the bridge.
The invention is realized in the following way:
A bridge transverse limiting device based on a tension-compression bar model comprises a vertical supporting limiting piece, a horizontal drawknot piece and an oblique compression supporting piece; the upper ends of the pair of inclined pressure-bearing support pieces are fixedly connected with the lower ends of the pair of vertical support limit pieces respectively, an obtuse angle included angle is formed between the inclined pressure-bearing support pieces and the vertical support limit pieces, and the lower ends of the pair of inclined pressure-bearing support pieces extend obliquely inwards and downwards respectively and are fixed on the pier structure of the bridge; the horizontal drawknot piece is horizontally drawed between the connecting nodes of the pair of inclined compression supporting pieces and the pair of vertical supporting limiting pieces.
When the pier structure is a pier bearing platform, vertical pieces are respectively arranged between the lower ends of the pair of inclined pressure supporting pieces and the horizontal drawknot pieces, and the pair of vertical pieces are vertically arranged and are arranged in parallel on the outer side of the pier.
Two ends of the horizontal drawknot piece, the inclined pressure supporting piece and the vertical piece form a triangular truss structure, and the two triangular truss structures are connected into an integrated structure through the middle part of the horizontal drawknot piece.
When the pier structure is a pier cross beam, vertical pieces are respectively arranged between the lower ends of the pair of inclined pressure supporting pieces and the horizontal drawknot pieces, and the pair of vertical pieces are vertically arranged and are arranged in parallel on the outer side of the pier.
The pier structure is the pier, is equipped with the vertical piece between the lower extreme of slant pressurized support piece and the horizontal drawknot piece respectively, and a pair of vertical piece vertical setting and parallel arrangement are in the outside of pier, and the support is connected with horizontal temporary support beam between the lower extreme of a pair of slant pressurized support piece.
Two ends of the horizontal drawknot piece, the inclined pressure supporting piece and the vertical piece form a triangular truss structure, and the two triangular truss structures are connected into an integrated structure through the middle part of the horizontal drawknot piece and the horizontal temporary supporting beam.
A construction method of a bridge transverse limiting device based on a tension-compression bar model comprises the following steps:
providing the vertical supporting limiting pieces, and symmetrically arranging a pair of vertical supporting limiting pieces on two sides of the bridge respectively;
Providing the inclined pressure supporting pieces, respectively fixedly connecting the upper ends of the pair of inclined pressure supporting pieces with the lower ends of the pair of vertical supporting limiting pieces, and respectively fixing the lower ends of the pair of inclined pressure supporting pieces on the pier structure;
and providing the horizontal drawknot piece, and horizontally drawknot the horizontal drawknot piece between the connecting nodes of the pair of inclined compression supporting pieces and the pair of vertical supporting limiting pieces.
When the lower ends of the pair of oblique compression supporting pieces are respectively fixed at the two ends of the bridge pier cross beam, the method comprises the following sub-steps:
and providing a vertical piece, and vertically connecting the pair of vertical pieces between the lower ends of the pair of inclined pressure supporting pieces and the horizontal drawknot piece respectively, so that the end parts of the horizontal drawknot piece, the inclined pressure supporting pieces and the vertical pieces form a triangular truss structure.
When the lower ends of the pair of inclined pressure supporting pieces are respectively fixed on the pier bearing platforms, the method comprises the following sub-steps:
The vertical piece is provided, a pair of vertical pieces are vertically connected between the lower ends of a pair of inclined pressure supporting pieces and the horizontal drawknot pieces respectively, the end parts of the horizontal drawknot pieces, the inclined pressure supporting pieces and the vertical pieces form a triangular truss structure, and the triangular truss structures on two sides of the bridge pier are connected into an integrated structure through the middle parts of the horizontal drawknot pieces.
When the lower ends of the pair of inclined pressure supporting pieces are respectively fixed on the bridge piers, the method comprises the following sub-steps:
providing a vertical piece, vertically connecting a pair of vertical pieces between the lower ends of a pair of inclined pressure supporting pieces and a horizontal drawknot piece respectively, and enabling the end parts of the horizontal drawknot piece, the inclined pressure supporting pieces and the vertical pieces to form a triangular truss structure;
The method comprises the steps of providing a horizontal temporary supporting beam, horizontally tying the horizontal temporary supporting beam between the connecting nodes of the pair of vertical pieces and the pair of inclined pressure supporting pieces, and connecting the triangular truss structures on two sides of the bridge pier into an integrated structure through the middle part of the horizontal tying piece and the horizontal temporary supporting beam.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, a pair of vertical supporting limiting pieces or a pair of vertical supporting limiting trusses on two sides of a bridge are connected into a whole by using a stress mode of pulling and pressing of a pulling and pressing rod model, and meanwhile, the force is transferred to a bridge pier cross beam and a bridge pier bearing platform by means of the self structure of the bridge pier, so that the limit that the traditional construction technology can only bear stress on one side is avoided, the structure is complex and strong, the complex construction of a limiting column foundation is correspondingly avoided, the construction difficulty is greatly reduced, the construction efficiency of the bridge transverse limiting device is improved, and the construction period of the bridge is ensured.
2. The single-side limiting bureau which is bent at full height is arranged to be a local height limiting structure, and bending moment borne by the limiting bureau is reduced, so that the straight rod-shaped limiting column with smaller bending rigidity is stressed to be changed into a space limiting structure along the cross section direction of the bridge, the structure of the bridge transverse limiting device is greatly simplified, the whole structure is stressed stably, the occurrence of deflection in the bridge jacking process is effectively avoided on the basis of ensuring the lateral force bending resistance of the bridge, and the jacking safety of the bridge is improved.
Drawings
FIG. 1 is a force diagram of a prior art column-type spacing structure (single-sided column force only);
FIG. 2 is a force diagram of a prior art truss type spacing structure (single side column force only);
fig. 3 is a front view of embodiment 1 of the transverse limiting device for a bridge based on a tension-compression bar model (the oblique compression supporting member is supported on the bridge pier bearing platform);
fig. 4 is a front view of embodiment 2 of the transverse limiting device of the bridge based on the tension-compression bar model (the oblique compression supporting members are supported at two ends of the bridge pier beam);
Fig. 5 is a front view of embodiment 3 of the transverse limiting device for the bridge based on the tension-compression bar model (the diagonal compression supporting member is supported at the middle part of the bridge pier);
FIG. 6 is a force balance schematic diagram of the bridge transverse limiting device based on the tension-compression bar model;
fig. 7 is a front view of embodiment 4 of the transverse limiting device for the bridge based on the tension-compression bar model (the oblique compression supporting truss is supported at two ends of the bridge pier beam);
fig. 8 is a front view of example 5 of the transverse limiting device for the bridge based on the tension-compression bar model of the present invention (the oblique compression supporting trusses are supported at both ends of the temporary truss girder).
In the figure, a vertical support limiting part 1, a bridge 2, a horizontal drawknot part 41, a horizontal temporary support beam 42, an oblique compression support part 43, a vertical part 44, a bridge pier 51, a bridge pier 52, a bridge pier bearing platform 53, a bridge pier cross beam 7, a vertical support limiting truss 8, an oblique compression support truss and a temporary truss girder 9.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Examples
Referring to fig. 3, a bridge transverse limiting device based on a tension-compression bar model includes a vertical supporting limiting member 1, a horizontal drawknot member 41 and an oblique compression supporting member 43; the pair of vertical supporting limiting pieces 1 are respectively arranged at two sides of the bridge 2, the upper ends of the pair of inclined pressure-bearing supporting pieces 43 are respectively fixedly connected with the lower ends of the pair of vertical supporting limiting pieces 1, an obtuse included angle is formed between the inclined pressure-bearing supporting pieces 43 and the vertical supporting limiting pieces 1, and the lower ends of the pair of inclined pressure-bearing supporting pieces 43 respectively extend obliquely inwards and downwards and are fixed on the pier structure of the bridge 2; the horizontal drawknot member 41 is horizontally drawed between the connection nodes of the pair of diagonal compression support members 43 and the pair of vertical support stoppers 1. The bridge 2 generates lateral force to the vertical supporting and limiting piece 1 when deviating, and the vertical supporting and limiting piece 1 transmits the lateral force to the bridge pier structure through the oblique compression supporting piece 43, and simultaneously keeps the vertical stability of the pair of vertical supporting and limiting pieces 1 under the drawknot action of the horizontal drawknot piece 41.
When the bridge pier 51 has a low height, the bridge pier structure is a bridge pier bearing platform 52, and can directly transmit force to the bridge pier bearing platform 52, and the vertical members 44 can be respectively disposed between the lower ends of the pair of diagonal compression supporting members 43 and the horizontal drawknot members 41, and the pair of vertical members 44 are vertically disposed and parallel to the outer side of the bridge pier 51, or serve as vertical force-bearing members by means of pier columns. The lower end of the diagonal pressure receiving support 43 at this time is fixed to the abutment cap 52.
The two end parts of the horizontal drawknot piece 41, the inclined pressure supporting piece 43 and the vertical piece 44 form a triangular truss structure, and the two triangular truss structures are connected into an integrated structure through the middle part of the horizontal drawknot piece 41.
The lateral force is transmitted to the pier bearing platform 52 through the inclined pressure-bearing support piece 43 in an inclined downward mode, the horizontal drawknot piece 41 is suitable for the condition that the pier 51 is lower, upward tensile force is provided for the inclined pressure-bearing support piece 43 through the vertical piece 44, and balance stability of the whole bridge transverse limiting device is guaranteed.
In this embodiment, the horizontal tie members 41 are preferably horizontal tie rods, the inclined pressure supporting members 43 are preferably inclined pressure supporting rods, the vertical members 44 are preferably vertical rods, and the vertical supporting and limiting members 1 are preferably vertical supporting and limiting rods.
Examples
Referring to fig. 4, a bridge transverse limiting device based on a tension-compression bar model includes a vertical supporting limiting member 1, a horizontal drawknot member 41 and an oblique compression supporting member 43; the pair of vertical supporting limiting pieces 1 are respectively arranged at two sides of the bridge 2, the upper ends of the pair of inclined pressure-bearing supporting pieces 43 are respectively fixedly connected with the lower ends of the pair of vertical supporting limiting pieces 1, an obtuse included angle is formed between the inclined pressure-bearing supporting pieces 43 and the vertical supporting limiting pieces 1, and the lower ends of the pair of inclined pressure-bearing supporting pieces 43 respectively extend obliquely inwards and downwards and are fixed on the pier structure of the bridge 2; the horizontal drawknot member 41 is horizontally drawed between the connection nodes of the pair of diagonal compression support members 43 and the pair of vertical support stoppers 1. The bridge 2 generates lateral force to the vertical supporting and limiting piece 1 when deviating, and the vertical supporting and limiting piece 1 transmits the lateral force to the bridge pier structure through the oblique compression supporting piece 43, and simultaneously keeps the vertical stability of the pair of vertical supporting and limiting pieces 1 under the drawknot action of the horizontal drawknot piece 41.
When the bridge pier 51 is higher and is provided with the bridge pier beam 53, the bridge pier structure is the bridge pier beam 53, and can directly transmit force to the bridge pier beam 53, and the vertical members 44 are respectively arranged between the lower ends of the pair of oblique compression supporting members 43 and the horizontal drawknot members 41, and the pair of vertical members 44 are vertically arranged and parallel to the outer side of the bridge pier 51, or are used as vertical force-bearing rods by means of the bridge pier columns.
The two ends of the horizontal drawknot member 41, the inclined pressure supporting member 43 and the vertical member 44 form a triangular truss structure, and the two triangular truss structures are connected into an integrated structure through the middle part of the horizontal drawknot member 41 and the horizontal temporary supporting beam 42.
In this embodiment, the horizontal tie members 41 are preferably horizontal tie rods, the inclined pressure supporting members 43 are preferably inclined pressure supporting rods, the vertical members 44 are preferably vertical rods, and the vertical supporting and limiting members 1 are preferably vertical supporting and limiting rods.
Examples
Referring to fig. 5, a bridge transverse limiting device based on a tension-compression bar model includes a vertical supporting limiting member 1, a horizontal drawknot member 41 and an oblique compression supporting member 43; the pair of vertical supporting limiting pieces 1 are respectively arranged at two sides of the bridge 2, the upper ends of the pair of inclined pressure-bearing supporting pieces 43 are respectively fixedly connected with the lower ends of the pair of vertical supporting limiting pieces 1, an obtuse included angle is formed between the inclined pressure-bearing supporting pieces 43 and the vertical supporting limiting pieces 1, and the lower ends of the pair of inclined pressure-bearing supporting pieces 43 respectively extend obliquely inwards and downwards and are fixed on the pier structure of the bridge 2; the horizontal drawknot member 41 is horizontally drawed between the connection nodes of the pair of diagonal compression support members 43 and the pair of vertical support stoppers 1. The bridge 2 generates lateral force to the vertical supporting and limiting piece 1 when deviating, and the vertical supporting and limiting piece 1 transmits the lateral force to the bridge pier structure through the oblique compression supporting piece 43, and simultaneously keeps the vertical stability of the pair of vertical supporting and limiting pieces 1 under the drawknot action of the horizontal drawknot piece 41.
When the bridge pier 51 is higher and is not provided with a bridge pier beam, the bridge pier structure is the bridge pier 51, the lower ends of the pair of inclined pressure supporting pieces 43 are fixed at the middle part of the bridge pier 51, the horizontal temporary supporting beams 42 are supported and connected between the lower ends of the pair of inclined pressure supporting pieces 43, the vertical pieces 44 are respectively arranged between the lower ends of the pair of inclined pressure supporting pieces 43 and the horizontal drawknot piece 41, and the pair of vertical pieces 44 are vertically arranged and are arranged in parallel on the outer side of the bridge pier 51 or serve as vertical stress rods by means of pier columns.
The two ends of the horizontal drawknot member 41, the inclined pressure supporting member 43 and the vertical member 44 form a triangular truss structure, and the two triangular truss structures are connected into an integrated structure through the middle part of the horizontal drawknot member 41 and the horizontal temporary supporting beam 42.
In this embodiment, the horizontal tie members 41 are preferably horizontal tie rods, the inclined pressure supporting members 43 are preferably inclined pressure supporting rods, the vertical members 44 are preferably vertical rods, and the vertical supporting and limiting members 1 are preferably vertical supporting and limiting rods.
Referring to fig. 6, the working principle of the present invention is: the horizontal temporary supporting beam 42 and the bridge pier cross beam 53 are obliquely transmitted with lateral force through the oblique pressure-bearing supporting piece 43, the horizontal drawknot piece 41 provides upward tension for the horizontal temporary supporting beam 42 through the vertical piece 44, balance stability of the whole bridge transverse limiting device is guaranteed, risk that the bridge pier 51 is subjected to excessive horizontal force is reduced, and the bridge pier 51 is suitable for the condition that the bridge pier 51 is higher. The bending mode of the vertical supporting limiting piece 1 and the inclined pressure supporting piece 43 replaces a longer straight rod-shaped vertical supporting limiting piece 1 in traditional construction, so that the length of a force arm of the horizontal force 1 of the vertical supporting limiting piece is greatly reduced, the bending moment of the vertical supporting limiting piece 1 is reduced, and the section of the vertical supporting limiting piece 1 can be greatly reduced.
Referring to fig. 3 to 5, a construction method of a bridge transverse limiting device based on a tension-compression bar model comprises the following steps:
The vertical supporting limiting pieces 1 are provided, and the pair of vertical supporting limiting pieces 1 are symmetrically arranged on two sides of the bridge 2 respectively.
The oblique compression supporting members 43 are provided, the upper ends of the pair of oblique compression supporting members 43 are respectively fixedly connected with the lower ends of the pair of vertical supporting limiting members 1, and the lower ends of the pair of oblique compression supporting members 43 are respectively fixed on the pier structure.
When the lower ends of the pair of inclined compressive supporting members 43 are respectively fixed at two ends of the bridge pier beam 53, the method comprises the following sub-steps:
the vertical members 44 are provided, and a pair of vertical members 44 are vertically connected between the lower ends of a pair of inclined compression supporting members 43 and the horizontal drawknot members 41, so that the ends of the horizontal drawknot members 41, the inclined compression supporting members 43 and the vertical members 44 form a triangular truss structure.
When the lower ends of the pair of inclined compressive supporting members 43 are respectively fixed on the pier bearing platforms 52, the method comprises the following sub-steps:
the vertical members 44 are provided, a pair of vertical members 44 are vertically connected between the lower ends of a pair of inclined pressure supporting members 43 and the horizontal drawknot members 41 respectively, so that the end parts of the horizontal drawknot members 41, the inclined pressure supporting members 43 and the vertical members 44 form a triangular truss structure, and the triangular truss structures on two sides of the bridge pier 51 are connected into an integrated structure through the middle parts of the horizontal drawknot members 41.
The horizontal drawknot member 41 is provided, and the horizontal drawknot member 41 is horizontally drawed between the connecting nodes of the pair of inclined compression supporting members 43 and the pair of vertical supporting and limiting members 1.
When the lower ends of the pair of inclined compressive supporting members 43 are respectively fixed on the bridge piers 51, the method comprises the following sub-steps:
providing a vertical piece 44, vertically connecting a pair of vertical pieces 44 between the lower ends of a pair of inclined pressure supporting pieces 43 and the horizontal drawknot piece 41 respectively, so that the end parts of the horizontal drawknot piece 41, the inclined pressure supporting pieces 43 and the vertical pieces 44 form a triangular truss structure;
the horizontal temporary supporting beams 42 are provided, the horizontal temporary supporting beams 42 are horizontally tied between the connecting nodes of the pair of vertical pieces 44 and the pair of inclined pressure supporting pieces 43, and the triangular truss structures on two sides of the bridge pier 51 are connected into an integral structure through the middle parts of the horizontal tie pieces 41 and the horizontal temporary supporting beams 42.
Examples
Referring to fig. 7, a bridge transverse limiting device based on a tension-compression bar model includes a vertical supporting limiting truss 7, an inclined compression supporting truss 8 and a horizontal drawknot member 41; the pair of vertical supporting limit trusses 7 are respectively arranged at two sides of the bridge 2, the upper ends of the pair of inclined pressure-bearing support trusses 8 are respectively connected with the lower ends of the pair of vertical supporting limit trusses 7, and the horizontal drawknot piece 41 is horizontally connected between the lower ends of the pair of vertical supporting limit trusses 7; the lower ends of the pair of obliquely pressed support trusses 8 extend obliquely downward toward the inside and are fixed to the pair of bridge piers 51, respectively.
When the bridge piers 51 are higher and the bridge pier beams 53 are arranged, the bridge pier beams 53 are arranged between the pair of bridge piers 51, so that force can be directly transferred to the bridge pier beams 53, and the lower ends of the pair of inclined pressure-bearing support trusses 8 are respectively fixed at two ends of the bridge pier beams 53. The bridge 2 generates lateral force to the vertical supporting limit truss 7 when deviating, the oblique compression supporting truss 8 transmits the lateral force to the bridge pier cross beam 53, and meanwhile, the vertical stability of the vertical supporting limit truss 7 is kept under the action of the drawknot of the horizontal drawknot piece 41, so that the bridge pier bridge is applicable to the condition that the bridge pier 51 is higher.
Examples
Referring to fig. 8, a bridge transverse limiting device based on a tension-compression bar model includes a vertical supporting limiting truss 7, an inclined compression supporting truss 8 and a horizontal drawknot member 41; the pair of vertical supporting limit trusses 7 are respectively arranged at two sides of the bridge 2, the upper ends of the pair of inclined pressure-bearing support trusses 8 are respectively connected with the lower ends of the pair of vertical supporting limit trusses 7, and the horizontal drawknot piece 41 is horizontally connected between the lower ends of the pair of vertical supporting limit trusses 7; the lower ends of the pair of obliquely pressed support trusses 8 extend obliquely downward toward the inside and are fixed to the pair of bridge piers 51, respectively.
When the bridge pier beam 53 is not constructed between the bridge piers 51, a temporary truss girder 9 is arranged between the pair of bridge piers 51, and the lower ends of the pair of inclined pressure supporting trusses 8 are respectively fixed at two ends of the temporary truss girder 9, so that the force can be directly transmitted to the temporary truss girder 9.
Referring to fig. 7 and 8, a construction method of a bridge transverse limiting device based on a tension-compression bar model comprises the following steps:
and providing the vertical supporting limit trusses 7, and symmetrically arranging a pair of vertical supporting limit trusses 7 on two sides of the bridge 2 respectively.
The inclined pressure supporting trusses 8 are provided, the upper ends of the inclined pressure supporting trusses 8 are respectively fixedly connected with the lower ends of the vertical supporting limit trusses 7, and the lower ends of the inclined pressure supporting trusses 8 are respectively fixed on the piers 51.
When a bridge beam 53 is provided between the pair of bridge piers 51, the lower ends of the pair of obliquely pressed support trusses 8 are respectively fixed at two ends of the bridge beam 53.
When the bridge pier cross beam 53 is not constructed between the pair of bridge piers 51, the temporary truss beam 9 is provided, the temporary truss beam 9 is horizontally arranged between the pair of bridge piers 51, and the lower ends of the pair of inclined pressure supporting trusses 8 are respectively fixed at the two ends of the temporary truss beam 9.
When the bridge 2 is lifted, the upper structure is separated from the bridge pier 51, the bridge pier 51 has high rigidity, and particularly, for the structure of a transverse bridge to multiple pier columns, the bridge pier 51 can be used as a stress structure of the bridge transverse limiting device due to the fact that a cover beam and a cross beam are transversely combined, and the rigidity value of the bridge is far greater than that of the bridge transverse limiting device installed at a later stage. According to the invention, a pair of vertical supporting limiting pieces 1 or a pair of vertical supporting limiting trusses 7 on two sides of the bridge 2 are connected into a whole by using a pulling and pressing mode of a pulling and pressing rod model, and the force is transferred to the bridge pier structure of the bridge, so that the use of a traditional thick supporting limiting column is avoided, and the complex construction of a limiting column foundation is also avoided.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the invention, and therefore, any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. Bridge transverse limiting device based on tension-compression bar model, characterized by: comprises a vertical supporting limiting piece (1), a horizontal drawknot piece (41) and an inclined pressure supporting piece (43); the pair of vertical supporting limiting pieces (1) are respectively arranged at two sides of the bridge (2), the upper ends of the pair of inclined pressure-bearing supporting pieces (43) are respectively fixedly connected with the lower ends of the pair of vertical supporting limiting pieces (1), an obtuse angle included angle is formed between the inclined pressure-bearing supporting pieces (43) and the vertical supporting limiting pieces (1), and the lower ends of the pair of inclined pressure-bearing supporting pieces (43) are respectively inclined downwards inwards and extend and are fixed on the pier structure of the bridge (2); the horizontal drawknot piece (41) is horizontally drawknot between the connecting nodes of the pair of inclined compression supporting pieces (43) and the pair of vertical supporting limiting pieces (1);
When the pier structure is a pier bearing platform (52), vertical pieces (44) are respectively arranged between the lower ends of a pair of inclined pressure supporting pieces (43) and a horizontal drawknot piece (41), the pair of vertical pieces (44) are vertically arranged and are arranged on the outer side of the pier (51) in parallel, two end parts of the horizontal drawknot piece (41), the inclined pressure supporting pieces (43) and the vertical pieces (44) form a triangular truss structure, and the two triangular truss structures are connected into an integral structure through the middle parts of the horizontal drawknot pieces (41);
when the pier structure is a pier cross beam (53), vertical pieces (44) are respectively arranged between the lower ends of a pair of inclined pressure supporting pieces (43) and the horizontal drawknot pieces (41), and the pair of vertical pieces (44) are vertically arranged and are arranged in parallel on the outer side of the pier (51);
When pier structure be pier (51), be equipped with vertical spare (44) between the lower extreme of a pair of slant pressurized support piece (43) and horizontal drawknot piece (41) respectively, the outside at pier (51) is vertically set up and parallel arrangement to a pair of vertical spare (44), support between the lower extreme of a pair of slant pressurized support piece (43) and be connected with horizontal temporary support beam (42), the both ends of horizontal drawknot piece (41), slant pressurized support piece (43) and vertical spare (44) constitute triangular truss structure, two triangular truss structures are through the middle part of horizontal drawknot piece (41) and horizontal temporary support beam (42) connection structure.
2. The construction method of the bridge transverse limiting device based on the tension-compression bar model as claimed in claim 1, which is characterized by comprising the following steps: the method comprises the following steps:
Providing the vertical supporting limiting pieces (1), and symmetrically arranging a pair of vertical supporting limiting pieces (1) on two sides of the bridge (2) respectively;
providing the inclined pressure supporting pieces (43), respectively fixedly connecting the upper ends of the pair of inclined pressure supporting pieces (43) with the lower ends of the pair of vertical supporting limiting pieces (1), and respectively fixing the lower ends of the pair of inclined pressure supporting pieces (43) on the bridge pier structure;
Providing the horizontal drawknot piece (41), horizontally drawknot the horizontal drawknot piece (41) between the connecting nodes of the pair of inclined compression supporting pieces (43) and the pair of vertical supporting limiting pieces (1);
When the lower ends of the pair of inclined pressure supporting pieces (43) are respectively fixed at the two ends of the bridge pier cross beam (53), the method comprises the following substeps:
Providing a vertical piece (44), vertically connecting a pair of vertical pieces (44) between the lower ends of a pair of inclined pressure supporting pieces (43) and a horizontal drawknot piece (41) respectively, and enabling the end parts of the horizontal drawknot piece (41), the inclined pressure supporting pieces (43) and the vertical pieces (44) to form a triangular truss structure;
when the lower ends of the pair of inclined pressure supporting pieces (43) are respectively fixed on the pier bearing platforms (52), the method comprises the following sub-steps:
Providing the vertical pieces (44), vertically connecting a pair of vertical pieces (44) between the lower ends of a pair of inclined pressure supporting pieces (43) and the horizontal drawknot pieces (41) respectively, and enabling the end parts of the horizontal drawknot pieces (41), the inclined pressure supporting pieces (43) and the vertical pieces (44) to form a triangular truss structure, wherein the triangular truss structures on two sides of the bridge pier (51) are connected into an integral structure through the middle parts of the horizontal drawknot pieces (41);
When the lower ends of the pair of inclined pressure supporting pieces (43) are respectively fixed on the bridge piers (51), the method comprises the following substeps:
Providing a vertical piece (44), vertically connecting a pair of vertical pieces (44) between the lower ends of a pair of inclined pressure supporting pieces (43) and a horizontal drawknot piece (41) respectively, and enabling the end parts of the horizontal drawknot piece (41), the inclined pressure supporting pieces (43) and the vertical pieces (44) to form a triangular truss structure;
The method comprises the steps of providing a horizontal temporary supporting beam (42), horizontally tying the horizontal temporary supporting beam (42) between connecting nodes of a pair of vertical pieces (44) and a pair of inclined pressure supporting pieces (43), and connecting the triangular truss structures on two sides of a pier (51) into an integrated structure through the middle part of the horizontal tying piece (41) and the horizontal temporary supporting beam (42).
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