CN109024226B - Steel truss bridge node structure connected by rivets and construction method - Google Patents
Steel truss bridge node structure connected by rivets and construction method Download PDFInfo
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- CN109024226B CN109024226B CN201811030128.7A CN201811030128A CN109024226B CN 109024226 B CN109024226 B CN 109024226B CN 201811030128 A CN201811030128 A CN 201811030128A CN 109024226 B CN109024226 B CN 109024226B
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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
- E01D6/00—Truss-type 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
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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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Abstract
The invention discloses a steel truss bridge structure connected by rivets and a construction method thereof, wherein the steel truss bridge structure comprises chord members, web members and cross beams; the chord members are connected with the corresponding web members and the corresponding cross beams by rivets; the joints of the chord members and the corresponding web members as well as the corresponding cross beams are provided with chord member inner cross plates; the chord member inner diaphragm plates comprise chord member connecting parts and beam connecting parts, the chord member connecting parts are connected with corresponding chord members, and the beam connecting parts are connected with corresponding beams; the end parts of the cross beams are respectively provided with a notch matched with the cross beam connecting part, and are respectively provided with a gusset plate; the beam connecting parts are respectively clamped into the corresponding notches and fixed by rivets through the corresponding gusset plates. During construction, the diaphragm plates in the chord members are connected with the web members to form a combined member, all the combined members are constructed and mounted on the chord members, and finally the bridge deck system of the truss bridge and the bridge deck system of the truss outer cantilever are mounted. The invention provides reasonable structural design for complex node connection and solves the difficult problem in the processing technology.
Description
Technical Field
The invention relates to the technical field of steel truss bridge construction, in particular to a steel truss bridge node structure connected by rivets and a construction method.
Background
In the prior art, for a steel truss structure connected by rivets, when the span is large, a pi-shaped section is required to be adopted for an upper chord member and a lower chord member, and a double-limb back-to-back groove-shaped section (such as a 'shape') is adopted for a web member.
However, the connection of the cross members of such trusses to the chord and web members is relatively complex.
The cross beam below the traffic surface is usually designed into an I-shaped section and consists of a web plate, an upper wing plate, a lower wing plate and a plurality of connecting angle steels. When the cross beam needs to be cross-connected with the chord member with the pi-shaped section, the web plate of the cross beam and the web plate of the chord member are in T-shaped connection; when the cross beam needs to be connected to a web member having a cross-sectional shape like "] [", it is also necessary to connect the web of the cross beam to the web of the web member in a "T" shape.
For long span truss bridges that are connected using rivets, they are typically designed to be of varying height. When the height of truss on the facade arrangement is always changing, in order to guarantee that the traffic face has gentle longitudinal slope, there are two kinds of structural treatment modes:
1) The upper chord is arranged to be parallel to the passing surface, the lower chord is arranged to be high, and the cross beam is arranged to be high;
2) The lower chord is arranged to be parallel to the passing surface, the upper chord is changed in height, the cross beam is changed in height, and the like.
In the first construction method, the beam height is constantly changing. When the total height of the cross beam is greatly changed, the cross beam may gradually transition from the solid I-shaped section to two I-shaped sections which are parallel up and down and provided with intermediate connecting rods.
In the first case, the construction of the beam to chord and web connection is extremely difficult to handle, whether the beam is a solid i-section or two i-sections parallel up and down with intermediate connecting bars.
Therefore, a structural scheme capable of overcoming the defects of the prior art is required to be provided for the I-shaped section of which the cross beam is solid.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the invention provides a steel truss bridge node structure connected by rivets and a construction method, and one of the purposes of realizing is to overcome the defects of the prior art, provide a reasonable structural design scheme for complex node connection and solve the difficult problem in the processing technology.
In order to achieve the above purpose, the invention discloses a steel truss bridge node structure connected by rivets, which comprises chord members, web members and cross beams; the four chords are respectively arranged on the two sides of the upper surface and the lower surface of the steel truss bridge;
both sides of the steel truss bridge form truss structures by virtue of a plurality of web members arranged between the corresponding two chords;
the upper surface and the lower surface of the steel truss bridge are respectively provided with a plurality of cross beams which are parallel to each other along the length direction.
Wherein each chord member is connected with the corresponding web member and the corresponding cross beam by rivets;
the connecting parts of each chord member and the corresponding web member as well as the corresponding cross beam are provided with chord member inner cross plates;
each chord member inner diaphragm plate comprises a chord member connecting part and a beam connecting part, wherein the chord member connecting parts are connected with the corresponding chord members, and the beam connecting parts are connected with the corresponding beams;
the end part of each beam is provided with a notch matched with the beam connecting part, and is provided with a gusset plate; when each cross beam is connected with the corresponding chord member, each cross beam connecting part is respectively clamped into the corresponding notch, and the corresponding gusset plate is fixed by rivets.
Preferably, the cross section of each chord member is in a pi shape, and a rectangular groove extending along the length direction is formed in each chord member;
each chord comprises 1 chord-wing plate, 2 chords-web plates, chord-angle steel A and chord-angle steel B which are connected by rivets;
and a mounting groove is formed between each chord member connecting part and each beam connecting part, each chord member connecting part is inserted into the rectangular groove along the normal direction of the corresponding chord member, and the mounting groove is clamped on the side wall, close to one side of the beam, of the rectangular groove and is fixed by rivets.
Preferably, the cross section of each web member is in the shape of a "] [ ] [" letter;
each web member comprises 4 web members and 8 web member-angle steel D, and the web members are connected through rivets;
the end part of each web member is provided with a narrow groove matched with the chord member connecting part, and when each web member is connected with the corresponding chord member, each narrow groove is respectively clamped with the corresponding chord member connecting part and fixed by a rivet;
and web members-angle steel E are arranged on two sides of the narrow groove.
Preferably, the outermost edge of each web member is provided with a lacing plate and a lacing bar;
the plane of the batten plate is vertical to the web plate, the long side direction of the batten plate is vertical to the axis of the web member, the surface of the batten plate is attached to the free limb of the angle steel, and the batten plate is connected with the angle steel by adopting a rivet;
the plane where the lacing bar is located is perpendicular to the web plate, the axis direction of the lacing bar and the axis of the web member form an included angle of 30-50 degrees, the surface of the lacing bar is attached to the free limb of the angle steel, and the lacing bar is connected with the angle steel through rivets.
Preferably, the cross section of each cross beam is I-shaped;
each beam comprises 1 beam-upper wing plate, 1 beam-web plate, 1 beam-lower wing plate and 4 beam-angle steels C which are connected by rivets.
The beam-upper wing plate and the beam-lower wing plate of each of the beam ends are longer than the beam-web, and the notch is formed in the beam elevation.
Preferably, each beam-angle C is divided into three sections along the length direction, and is connected with the corresponding beam-upper wing plate, beam-lower wing plate and beam-web plate by rivets.
Preferably, a chord member-web heightening area is arranged at the position where each chord member is provided with the web member; and the starting position and the ending position of the chord member-web heightening area are provided with concave rounding structures.
Preferably, each chord member inner diaphragm plate further comprises an outer cantilever arm connecting part, wherein the outer cantilever arm connecting parts are positioned at the outer sides of the steel truss bridge, and the outer cantilever arm connecting parts are provided with outer cantilever arms;
the cantilever arm comprises a trapezoid cantilever arm node plate, a cantilever arm cross rod and a cantilever arm inclined rod;
each outer cantilever cross rod consists of 2 outer cantilever-angle steels F;
each cantilever arm inclined rod consists of 2 cantilever arm-angle steel G.
One end of the outer cantilever arm cross rod is connected with the outer cantilever arm connecting part through a rivet, and the other end of the outer cantilever arm cross rod is connected with the outer cantilever arm gusset plate through a rivet.
One end of the outer cantilever diagonal rod is connected with the outer cantilever connecting part through a rivet, and the other end of the outer cantilever diagonal rod is connected with the outer cantilever gusset plate through a rivet.
The invention also provides a construction method of the steel truss bridge node structure connected by rivets, which comprises the following steps:
a. temporarily fixing a web member-angle steel D on the corresponding web member-web plate, and then installing rivets between the web member-web plate and the web member-angle steel D;
b. rivet is adopted to assemble each part one by one, so as to form a complete chord member, web members and cross beams;
c. inserting the chord member inner diaphragm plate into the narrow groove of the web member-web plate, and ensuring that the chord member inner diaphragm plate is tightly attached to the corresponding web member-angle steel E;
e. installing rivets between the chord member inner diaphragm plates and the web member-angle steel E to form a first combined component;
f. placing the chord on a mounting pedestal with the chord-wing plate down and the chord-web up;
g. lifting the first combined component, enabling the narrow groove of the web member-web plate to be downward, and lifting the first combined component right above the connection position of the chord member and the web member;
h. lowering said first composite member such that each of said chord-webs is progressively inserted into the void between adjacent ones of said web-webs and such that said chord-webs are progressively inserted into said slots of said inner chord diaphragm;
i. installing rivets between the web members and the chord members and webs, and installing rivets on the web members and angle steel E for connecting the web members and the chord members and webs to form a second combined component;
j. positioning the two second combined components on a mounting pedestal according to the design of a truss bridge, and preparing to mount the cross beam;
k. hoisting the cross beam above the second combined components, enabling the projection area of the cross beam on the horizontal plane to be positioned between the projections of the two second combined components, and enabling the cross beam-web plate and the chord inner cross diaphragm in the second combined components to be positioned on the same plane;
lowering the cross beam, enabling the cross beam-web plate to descend to be aligned with the cross beam connecting part of the cross beam partition plate in the chord member, temporarily positioning 4 node plates at two ends of the cross beam, and installing rivets;
m, positioning the 1 st section and the 3 rd section of a beam-angle steel C on the beam, and installing rivets; c, repeating the steps, and finishing the installation of the rest chord member nodes;
o, after all chord member joints are installed, installing a bridge deck system of the truss bridge;
p, installing an outer cantilever arm-angle steel F, an outer cantilever arm-angle steel G and a bridge deck system of the truss outer cantilever arm; thus, the member installation of the entire truss is completed.
Preferably, in the step a, in the web member-angle steel D, the rivet located in the overlapping area of the web member-web plate and the chord member web plate is not installed first;
in step b, the beam angle C is mounted only in the middle section of the beam.
The invention has the beneficial effects that:
the chord member inner diaphragm plate is provided with the vertical mounting groove, so that the chord member inner diaphragm plate can avoid the chord member-web plate, and can be reliably connected with the chord member-web plate through rivets, and the stress safety and stability of the chord member under transverse load are ensured.
According to the invention, the web member-web plate is provided with the vertical narrow groove and the structure that the diaphragm plate in the chord member penetrates, so that the web member-web plate can avoid the diaphragm plate in the chord member, and the web member-web plate can be reliably connected with the diaphragm plate in the chord member through the rivet to form a local rigid area, and the stress safety and stability of the web member under transverse load are ensured.
The invention can be widely applied to maintenance engineering of the existing old steel bridges, and a considerable part of the steel bridges are manufactured by rivet connection. Due to the development of traffic, the load standards are increasing, and the capacity of some bridges cannot meet the design requirements, and components or reinforcing structures need to be replaced. Aiming at the construction requirement of 'old repair as old', the technology of the invention can be adopted to improve the original structure.
For some urban landscapes with certain requirements, a new bridge is required to be built by adopting a rivet process, and for some large-span bridges, the complex node connection in the invention provides a reasonable structural design scheme and solves the difficult problem in the processing process.
Aiming at the development of urban traffic, the traffic function of the original old bridge needs to be expanded, for example, a passage is added on the outer side of the original bridge, and the scheme of connecting the inner transverse diaphragm plate of the chord member with the outer cantilever arm of the truss can well solve the requirements.
The conception, specific structure, and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present invention.
Drawings
Fig. 1 shows a schematic overall structure of an embodiment of the present invention.
Fig. 2 shows a schematic view of the AA cross-sectional structure of fig. 1 according to the present invention.
Fig. 3 shows a partially enlarged schematic view of the structure of the present invention at B in the earth 1.
Fig. 4 is a partially enlarged schematic view of the end of the web in accordance with an embodiment of the invention.
Fig. 5 shows a partially enlarged structural schematic diagram of the present invention at C in fig. 2.
Fig. 6 shows a schematic view of a partial enlarged cross section of a chord in an embodiment of the invention.
Fig. 7 shows a schematic view of a cross-sectional view of a cross-beam in an enlarged partial structure in accordance with an embodiment of the present invention.
Fig. 8 shows a schematic view of a partial enlarged structure of a cross section of a web in an embodiment of the present invention.
Fig. 9 shows a schematic view of the structure of the diaphragm in the chord in an embodiment of the invention.
Figure 10 shows a schematic view of the arrangement of the gusset and the gusset strip on the web-web of the web in an embodiment of the invention.
Fig. 11 shows a schematic view of an cantilever gusset in an embodiment of the invention.
Detailed Description
Examples
As shown in fig. 1 to 11, the steel truss bridge node structure connected by rivets comprises chords 1, web members 2 and cross beams 3; four chords 1 are respectively arranged on two sides of the upper surface and the lower surface of the steel truss bridge;
both sides of the steel truss bridge form truss structures by virtue of a plurality of web members 2 arranged between the two corresponding chord members 1;
the upper and lower sides of the steel truss bridge are provided with a plurality of cross beams 3 which are parallel to each other along the length direction.
Wherein each chord member 1 is connected with the corresponding web member 2 and the corresponding cross beam 3 by rivets;
the joints of each chord member 1 and the corresponding web member 2 as well as the corresponding cross beam 3 are provided with chord member inner cross plates 11;
each chord member inner diaphragm 11 comprises a chord member connecting portion 111 and a beam connecting portion 112, the chord member connecting portion 111 is connected with the corresponding chord member 1, and the beam connecting portion 112 is connected with the corresponding beam;
the end part of each beam 3 is provided with a notch matched with the beam connecting part 112 and is provided with a gusset plate 31; when each cross beam 3 is connected with the corresponding chord member 1, each cross beam connecting portion 112 is respectively clamped into the corresponding notch, and the corresponding gusset 31 is fixed by rivets.
The principle of the invention is that the chord member 1, the web member 2 and the cross beam 3 are connected together by the chord member inner diaphragm 11, and the chord member connecting part 111 and the cross beam connecting part 112 of the chord member inner diaphragm 11 are respectively connected with the web member 2 and the cross beam 3 to form a local rigid area, so that the stress safety and the stress stability of the web member 2 under transverse load are ensured.
In some embodiments, each chord member 1 has a pi-shaped cross section, and a rectangular slot extending in the length direction is formed in each chord member 1;
each chord member 1 comprises 1 chord member-wing plate, 2 chord member-web plates, chord member-angle steel A and chord member-angle steel B which are connected by rivets;
a mounting groove is arranged between each chord member connecting part 111 and each beam connecting part 112, each chord member connecting part 111 is inserted into the rectangular groove along the normal direction of the corresponding chord member 1, and the mounting groove is clamped on the side wall of one side, close to the beam 3, of the rectangular groove and is fixed by rivets.
In certain embodiments, each web member 2 is "] [ ] [" shaped in cross section;
each web member 2 comprises 4 web members and 8 web member-angle steels D, and the web members are connected by rivets;
the end part of each web member 2 is provided with a narrow groove 21 matched with the chord member connecting part 111, and when each web member 2 is connected with the corresponding chord member 1, each narrow groove 21 is respectively clamped with the corresponding chord member connecting part 111 and fixed by rivets;
web members-angle steel E are provided on both sides of the narrow groove 21.
In some embodiments, the outermost edge of each web member 2 is provided with a gusset plate and a gusset strip;
the plane of the batten plate is vertical to the web plate, the long side direction of the batten plate is vertical to the axis of the web member, the surface of the batten plate is attached to the free limb of the angle steel, and the batten plate is connected with the angle steel by adopting rivets;
the plane where the lacing bar is located is perpendicular to the web plate, the axial direction of the lacing bar forms an included angle of 30-50 degrees with the axial line of the web member, the surface of the lacing bar is attached to the free limb of the angle steel, and the lacing bar is connected with the angle steel through rivets.
In some embodiments, each cross beam 3 has an "I" shaped cross section;
each beam 3 comprises 1 beam-upper wing plate, 1 beam-web plate, 1 beam-lower wing plate and 4 beam-angle steels C which are connected by rivets.
The beam-upper wing plate and the beam-lower wing plate at the end part of each beam 3 are longer than the beam-web plate, and the notch is formed on the vertical face of the beam 3.
In some embodiments, each beam-angle C is divided into three sections along the length direction and is connected with the corresponding beam-upper wing plate, beam-lower wing plate and beam-web plate by rivets
In some embodiments, each chord 1 is provided with a chord-web raised area 15 at the location where web members 2 are provided; and the starting position and the ending position of the chord-web heightening area 15 are provided with concave rounding structures.
In some embodiments, each chord member inner diaphragm 11 further comprises an outer cantilever arm connecting part 113, wherein the outer cantilever arm connecting part 113 is positioned at the outer side of the steel truss bridge, and the outer cantilever arm connecting part 113 is provided with an outer cantilever arm;
the cantilever comprises a trapezoid cantilever node plate 43, a cantilever cross bar 41 and a cantilever inclined bar 42;
each outer cantilever beam 41 consists of 2 outer cantilever-angle steels F;
each cantilever arm diagonal 42 consists of 2 cantilever arm-angles G.
One end of the cantilever beam 41 is connected with the cantilever connecting part 113 by a rivet, and the other end is connected with the cantilever gusset 43 by a rivet.
One end of the cantilever arm inclined rod 42 is connected with the cantilever arm connecting part 113 by a rivet, and the other end is connected with the cantilever arm node plate 43 by a rivet.
The invention also provides a construction method of the steel truss bridge node structure connected by rivets, which comprises the following steps:
a. temporarily fixing the web member-angle steel D on the corresponding web member 2-web plate, and then installing rivets between the web member 2-web plate and the web member-angle steel D;
b. rivet is adopted to assemble each part one by one to form a complete chord member 1, web members 2 and cross beams 3;
c. inserting the chord member inner diaphragm 11 into the narrow groove of the web member-web plate, and ensuring that the chord member inner diaphragm 11 is tightly attached to the corresponding web member-angle steel E;
e. a rivet between the chord member inner diaphragm 11 and the web member-angle steel E is installed to form a first combined component;
f. placing the chord member 1 on the mounting pedestal with the chord member-wing plate down and the chord member-web plate up;
g. lifting the first combined component, enabling the narrow groove of the web member-web plate to be downward, and lifting the first combined component right above the connection position of the chord member 1 and the web member 2;
h. lowering the first combined member to gradually insert each chord member-web into the gap between two adjacent web members-web plates, and gradually insert the chord member-web plates into the narrow grooves of the chord member inner diaphragm plate 11;
i. the rivet between the web member-web plate and the chord member-web plate is installed, and the rivet used for connecting the web member-web plate and the chord member-web plate and arranged on the web member-angle steel E is installed to form a second combined component;
j. positioning two second combined components on a mounting pedestal according to the design of a truss bridge, and preparing to mount a cross beam 3;
k. hoisting the cross beam 3 above the second combined components, enabling the projection area of the cross beam 3 on the horizontal plane to be positioned between the projections of the two second combined components, and enabling the cross beam-web plate and the chord member inner diaphragm plate 11 in the second combined components to be positioned on the same plane;
lowering the cross beam 3 to enable the cross beam-web plate to be lowered to be aligned with the cross beam connecting part 112 of the cross beam baffle plate 11 in the chord member, temporarily positioning 4 node plates 31 at two ends of the cross beam 3, and installing rivets;
m, positioning the 1 st section and the 3 rd section of a beam-angle steel C on the beam, and installing rivets; c, repeating the steps, and finishing the installation of the rest chord member nodes;
o, after all chord member joints are installed, installing a bridge deck system 5 of the truss bridge;
p, installing an outer cantilever arm-angle steel F, an outer cantilever arm-angle steel G and a bridge deck system of the truss outer cantilever arm; thus, the member installation of the entire truss is completed.
In certain embodiments, in step a, in web-angle D, the rivet located in the web-web overlapping area with the chord web is not installed first;
in step b, the beam angle C is mounted only in the middle section of the beam 3.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
1. The steel truss bridge node structure connected by rivets comprises chord members (1), web members (2) and cross beams (3); the four chords (1) are respectively arranged on the two sides above and below the steel truss bridge;
both sides of the steel truss bridge form truss structures by virtue of a plurality of web members (2) arranged between the two corresponding chord members (1);
the upper surface and the lower surface of the steel truss bridge are respectively provided with a plurality of cross beams (3) which are parallel to each other along the length direction; the method is characterized in that:
-each chord (1) is connected to the respective web member (2) and to the respective cross member (3) by means of rivets;
the joints of each chord member (1) and the corresponding web member (2) as well as the corresponding cross beam (3) are provided with chord member inner cross plates (11);
each chord member inner diaphragm plate (11) comprises a chord member connecting part (111) and a beam connecting part (112), wherein the chord member connecting part (111) is connected with the corresponding chord member (1), and the beam connecting part (112) is connected with the corresponding beam;
the end part of each beam (3) is provided with a notch matched with the beam connecting part (112), and is provided with a gusset plate (31); when each cross beam (3) is connected with the corresponding chord member (1), each cross beam connecting part (112) is respectively clamped into the corresponding notch, and the corresponding gusset plate (31) is fixed by rivets;
the cross section of each chord member (1) is in a pi shape, and a rectangular groove extending along the length direction is formed in each chord member (1);
each chord member (1) comprises 1 chord member-wing plate, 2 chord member-web plates, chord member-angle steel A and chord member-angle steel B which are connected by rivets;
a mounting groove is formed between each chord member connecting part (111) and each cross beam connecting part (112), each chord member connecting part (111) is inserted into the rectangular groove along the normal direction of the corresponding chord member (1), and the mounting groove is clamped on the side wall, close to one side of the cross beam (3), of the rectangular groove and is fixed by rivets;
the cross section of each cross beam (3) is I-shaped;
each beam (3) comprises 1 beam-upper wing plate, 1 beam-web plate, 1 beam-lower wing plate and 4 beam-angle steel C which are connected by rivets.
2. The steel truss bridge node construction with rivet connection of claim 1, wherein: the cross section of each web member (2) is in the shape of a [ ] ";
each web member (2) comprises 4 web member-webs and 8 web member-angle steels D, and the web members are connected by rivets;
the end part of each web member (2) is provided with a narrow groove (21) matched with the chord member connecting part (111), and when each web member (2) is connected with the corresponding chord member (1), each narrow groove (21) is respectively clamped with the corresponding chord member connecting part (111) and fixed by a rivet;
and web members-angle steel E are arranged on two sides of the narrow groove (21).
3. The steel truss bridge node construction with rivet connection as recited in claim 2, wherein: the outermost edge of each web member (2) is provided with a lacing plate and a lacing bar;
the plane of the batten plate is vertical to the web plate, the long side direction of the batten plate is vertical to the axis of the web member, the surface of the batten plate is attached to the free limb of the angle steel, and the batten plate is connected with the angle steel by adopting a rivet;
the plane where the lacing bar is located is perpendicular to the web plate, the axis direction of the lacing bar and the axis of the web member form an included angle of 30-50 degrees, the surface of the lacing bar is attached to the free limb of the angle steel, and the lacing bar is connected with the angle steel through rivets.
4. The steel truss bridge node construction with rivet connection of claim 1, wherein: each beam-angle steel C is divided into three sections along the length direction and connected with the corresponding beam-upper wing plate, the beam-lower wing plate and the beam-web plate by rivets;
the beam-upper wing plate and the beam-lower wing plate of each of the beam ends are longer than the beam-web, and the notch is formed in the beam elevation.
5. The steel truss bridge node construction with rivet connection of claim 1, wherein: the chord member-web heightening areas (15) are arranged at the positions of the chord members (1) where the web members (2) are arranged; and the starting position and the ending position of the chord member-web heightening area (15) are provided with concave rounding structures.
6. The steel truss bridge node construction with rivet connection of claim 1, wherein: each chord member inner diaphragm plate (11) further comprises an outer cantilever arm connecting part (113), the outer cantilever arm connecting parts (113) are positioned at the outer sides of the steel truss bridge, and the outer cantilever arms are arranged on the outer cantilever arm connecting parts (113);
the cantilever arm comprises a trapezoid cantilever arm node plate (43), a cantilever arm cross rod (41) and a cantilever arm inclined rod (42);
each outer cantilever cross bar (41) consists of 2 outer cantilever-angle steels F;
each outer cantilever inclined rod (42) consists of 2 outer cantilever-angle steels G;
one end of the cantilever cross rod (41) is connected with the cantilever connecting part (113) by a rivet, and the other end is connected with the cantilever node plate (43) by a rivet;
one end of the cantilever inclined rod (42) is connected with the cantilever connecting part (113) by a rivet, and the other end is connected with the cantilever node plate (43) by a rivet.
7. The construction method of the steel truss bridge node structure connected by rivets comprises the following steps:
a. temporarily fixing a web member-angle steel D on the corresponding web member-web plate, and then installing rivets between the web member-web plate and the web member-angle steel D;
b. rivet is adopted to assemble each part one by one, so that a complete chord member (1), web members (2) and cross beams (3) are formed;
c. inserting the chord member inner diaphragm (11) into the narrow groove of the web member-web plate, and ensuring that the chord member inner diaphragm (11) is tightly attached to the corresponding web member-angle steel E;
e. installing rivets between the chord member inner diaphragm plate (11) and the web member-angle steel E to form a first combined component;
f. placing the chord member (1) on a mounting pedestal with the chord member-wing plate down and the chord member-web plate up;
g. lifting the first combined component, enabling the narrow groove of the web member-web plate to be arranged below, and lifting the first combined component right above the connecting position of the chord member (1) and the web member (2);
h. lowering said first composite member such that each of said chord-webs is progressively inserted into the space between two adjacent ones of said web-webs and such that said chord-webs are progressively inserted into said slots of said inner chord diaphragm (11);
i. installing rivets between the web members and the chord members and webs, and installing rivets on the web members and angle steel E for connecting the web members and the chord members and webs to form a second combined component;
j. positioning the two second combined components on a mounting pedestal according to the design of a truss bridge, and preparing to mount the cross beam (3);
k. hoisting the cross beam (3) above the second combined components, enabling the projection area of the cross beam (3) on the horizontal plane to be positioned between the projections of the two second combined components, and enabling the cross beam-web plate and the chord member inner diaphragm plate (11) in the second combined components to be positioned on the same plane;
lowering the cross beam (3), enabling the cross beam-web plate to descend to be aligned with a cross beam connecting part (112) of the cross beam partition plate (11) in the chord member, temporarily positioning 4 node plates (31) at two ends of the cross beam (3), and installing rivets;
m, positioning the 1 st section and the 3 rd section of a beam-angle steel C on the beam, and installing rivets; c, repeating the steps, and finishing the installation of the rest chord member nodes;
o, after all chord member joints are installed, installing a bridge deck system (5) of the truss bridge;
p, installing an outer cantilever arm-angle steel F, an outer cantilever arm-angle steel G and a bridge deck system of the truss outer cantilever arm; thus, the member installation of the entire truss is completed.
8. The construction method of the steel truss bridge node structure connected by rivets according to claim 7, wherein: in the step a, in the web member-angle steel D, the rivet positioned in the overlapping area of the web member web plate and the chord member web plate is not installed firstly;
in step b, the beam angle C is mounted only in the middle section of the beam (3).
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| JP3881598B2 (en) * | 2002-06-21 | 2007-02-14 | オリエンタル建設株式会社 | Composite truss segment and truss bridge with suspension cable using the same and its construction method |
| CN101949170A (en) * | 2010-09-21 | 2011-01-19 | 林娟 | Member-insertion type aluminum-alloy truss structure with plate gussets |
| CN202672022U (en) * | 2012-06-15 | 2013-01-16 | 南京华世特建筑工程有限公司 | Large span modularized aluminium alloy foot bridge with single span of 30 meters -60 meters |
| CN202899015U (en) * | 2012-11-07 | 2013-04-24 | 湖北华舟重工应急装备股份有限公司 | Modular highway steel truss bridge |
| CN203923880U (en) * | 2014-06-05 | 2014-11-05 | 西安中交土木科技有限公司 | A kind of assembly type steel bridge on highway |
| CN106223183B (en) * | 2016-09-13 | 2018-07-27 | 长安大学 | Assembled concrete-filled rectangular steel tube combines truss bridge and construction method |
| CN208803364U (en) * | 2018-09-05 | 2019-04-30 | 上海市城市建设设计研究总院（集团）有限公司 | Using the steel girder bridge joint structure of rivet interlacement |
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