Double-layer inclined support cantilever type full-bolt bridge

Abstract

The utility model belongs to the technical field of bridges, and particularly relates to a double-layer inclined support cantilever type full-bolt bridge. The utility model discloses a double-layer inclined support cantilever type full-bolt bridge which mainly comprises an upper-layer bridge floor structure, a lower-layer bridge floor structure and supporting pieces. The upper-layer bridge floor structure is arranged above the lower-layer bridge floor structure; the supporting piece comprises a main truss; the main truss comprises an upper chord member, a lower chord member and a web member; every two adjacent upper chords are connected through the high-strength bolts on the connecting plates; every two adjacent lower chord members are connected through the high-strength bolts on the connecting plates; the upper chord and the lower chord are symmetrically arranged; one end of the web member is connected with the upper chord member through a high-strength bolt, and the other end is connected with the lower chord member through a high-strength bolt. According to the double-layer inclined supporting cantilever arm type full-bolt bridge, the highway-railway combined building mode that the highway is located above the railway is adopted, the utilization rate and the trafficability of the bridge are improved, meanwhile, a plurality of components in the bridge are connected through the high-strength bolts, and the stability of the bridge is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge technical field, concretely relates to a double -deck inclined support cantilever arm formula full bolt bridge. BACKGROUND

[0002] In recent decades, with the development of social economy of our country, road, bridge also is developing at full speed, when the number of lanes is more, now more and more tend to adopt the double -deck bridge deck of upper and lower two layers. Double -deck bridge deck is widely used in highway-railway combined bridge in our country, and the highway-railway combined bridge can save limited passage resources and cost, that is, the highway-railway combined mode of 'highway on the upper, railway on the lower', the lower layer runs high-speed railway, and the upper layer runs first-class highway.

[0003] High-strength bolt is a kind of special bolt, which has very high tensile strength and can connect large steel beams to bear huge load without breaking. Although high-strength bolts are used between some components of the existing highway-railway combined bridge during construction, they are not used between all components of the bridge. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the utility model provides a double -deck inclined support cantilever arm formula full bolt bridge, which aims to adopt the highway-railway combined mode of 'highway on the upper, railway on the lower', improve the utilization rate and trafficability of the bridge, and connect multiple components in the bridge through high-strength bolts to ensure the stability of the bridge.

[0005] In order to achieve the above purpose, the utility model provides a double -deck inclined support cantilever arm formula full bolt bridge, which includes an upper bridge deck structure, a lower bridge deck structure and a support piece. The upper bridge deck structure is arranged above the lower bridge deck structure. The width of the upper bridge deck structure is greater than that of the lower bridge deck structure. The support piece is arranged between the upper bridge deck structure and the lower bridge deck structure. The support piece includes a main truss. The main truss includes upper chords, lower chords and web members. The upper chords are arranged in the upper bridge deck structure. The connection between adjacent two upper chords is provided with a connecting plate, which is connected through high-strength bolts on the connecting plate. The lower chords are arranged on the outer side of the lower bridge deck structure. The connection between adjacent two lower chords is provided with a connecting plate, which is connected through high-strength bolts on the connecting plate. The upper chords and the lower chords are symmetrically arranged. The two ends of the web members are provided with connecting plates. One end of the web member is connected to the upper chord through high-strength bolts on the connecting plate, and the other end is connected to the lower chord through high-strength bolts on the connecting plate.

[0006] The utility model provides a double-layer inclined support cantilever type full bolt bridge, which comprises an upper deck structure, a lower deck structure and a support, wherein the upper deck structure is arranged above the lower deck structure, the upper deck structure is used for running a two-way six-lane first-class highway, and the lower deck structure is used for running a double-line high-speed railway and can pass trains and automobiles, thereby greatly improving the utilization rate and passing property of the bridge.

[0007] Further, the support further comprises an inclined support; the outer side of the upper deck structure is provided with a secondary truss chord; the connection position of the adjacent two secondary truss chords is provided with a connecting plate, which is connected through high-strength bolts on the connecting plate; the connection position of one end of the inclined support and the lower chord is provided with a connecting plate, which is connected through high-strength bolts on the connecting plate; and the connection position of the other end of the inclined support and the secondary truss chord is provided with a connecting plate, which is connected through high-strength bolts on the connecting plate.

[0008] The outer side of the upper deck structure is provided with a secondary truss chord, the inclined support in the support connects the lower chord and the secondary truss chord, plays a supporting role on the secondary truss chord, and can transmit the load generated by the upper deck structure. Meanwhile, the adjacent two secondary truss chords, the inclined support and the lower chord, and the inclined support and the secondary truss chord are fixed through high-strength bolts, and the high-strength bolts can ensure that these components are fixed more stably.

[0009] Further, the web member comprises a straight web member and an inclined web member; the straight web member is arranged perpendicularly to the lower chord; and the inclined web member is arranged obliquely to the lower chord. The connection position of the straight web member and the upper chord and the lower chord is provided with a connecting plate, which is connected through high-strength bolts on the connecting plate. The connection position of the inclined web member and the upper chord and the lower chord is provided with a connecting plate, which is connected through high-strength bolts on the connecting plate.

[0010] The web member in the structure of the main truss can play a role in stabilizing the structure and improving the rigidity, and comprises a straight web member and an inclined web member, both of which can bear the load transmitted by the upper deck structure. Meanwhile, the straight web member or the inclined web member and the upper chord or the lower chord are fixed through high-strength bolts, and the high-strength bolts can ensure that these components are fixed more stably.

[0011] Further, the upper deck structure comprises a steel deck and a steel-concrete combined deck; and the steel deck and the steel-concrete combined deck are arranged adjacently.

[0012] The upper bridge deck structure includes a steel bridge deck and a steel-concrete combined bridge deck, the main structure of the steel bridge deck is made of steel, and has the characteristics of high strength, simple structure, convenient construction and light weight, and the steel-concrete combined bridge deck is provided with a concrete slab above the steel beam, and has the strength of the steel beam and the durability of the concrete slab.

[0013] Further, the steel bridge deck includes an upper steel plate and a plurality of upper cross beams; the upper chord divides the upper steel plate into an upper middle steel plate and two upper outer steel plates; the connection between the upper middle steel plate and the upper chord is provided with a connecting plate connected by high-strength bolts on the connecting plate; the connection between the upper outer steel plate and the upper chord and the secondary truss chord is provided with a connecting plate connected by high-strength bolts on the connecting plate; the plurality of upper cross beams are arranged in parallel; the plurality of upper cross beams are arranged perpendicular to the plane where the main truss is located; the connection between the upper cross beam and the upper chord is provided with a connecting plate connected by high-strength bolts on the connecting plate; and the upper steel plate is arranged above the plurality of upper cross beams.

[0014] The steel bridge deck includes an upper steel plate and a plurality of upper cross beams, the upper cross beams mainly bear and disperse the load brought from above, and the arrangement of the upper cross beams can increase the lateral stiffness of the bridge to ensure the overall stability and safety of the bridge. The upper middle steel plate and the adjacent upper outer steel plate in the upper steel plate are connected by high-strength bolts to assemble a complete upper steel plate.

[0015] Further, the steel-concrete combined bridge deck includes a concrete slab, a plurality of upper cross beams and a plurality of upper longitudinal beams; the plurality of upper cross beams are arranged in parallel; the plurality of upper cross beams are arranged perpendicular to the plane where the main truss is located; the plurality of upper longitudinal beams are arranged in parallel; the upper longitudinal beams are arranged perpendicular to the plurality of upper cross beams; the connection between the upper longitudinal beam and the upper cross beam is provided with a connecting plate connected by high-strength bolts on the connecting plate; and the concrete slab is arranged above the plurality of upper cross beams and the plurality of upper longitudinal beams.

[0016] The steel-concrete combined bridge deck includes a concrete slab, a plurality of upper cross beams and a plurality of upper longitudinal beams, the upper cross beams and the upper longitudinal beams can bear and disperse the load brought from above, and can ensure the overall stability and safety of the bridge.

[0017] Further, the lower bridge deck structure includes a lower steel plate and a plurality of lower cross beams; the connection between the lower steel plate and the lower chord is provided with a connecting plate connected by high-strength bolts on the connecting plate; the plurality of lower cross beams are arranged in parallel; the plurality of lower cross beams are arranged perpendicular to the plane where the main truss is located; and the lower steel plate is arranged above the plurality of lower cross beams.

[0018] The lower bridge deck structure includes a lower steel plate and a plurality of lower cross beams, the lower cross beams mainly bear and disperse the load brought from above, and the arrangement of the lower cross beams can increase the lateral stiffness of the bridge to ensure the overall stability and safety of the bridge.

[0019] Further, the upper portion of the sub-truss chord is further provided with a plurality of anchor box units; the plurality of anchor box units are arranged at intervals.

[0020] The anchor box unit is a key point of force bearing of the whole bridge, the anchor box unit is arranged on the upper portion of the sub-truss chord through welding, and is a component for fixing a cable and can be used for receiving and transmitting tension of the cable.

[0021] Further, the anchor box unit comprises an anchoring piece, anchor pull plates and a cable guide pipe; the anchor pull plates are two; the two anchor pull plates are oppositely arranged; the anchoring piece is arranged between the two anchor pull plates; the anchoring piece comprises an anchoring box, an anchor pipe sealing plate and an anchor backing plate; the anchor pipe sealing plate and the anchor backing plate are oppositely arranged; the anchor pipe sealing plate and the anchor backing plate are respectively arranged on two sides of the anchoring box; the anchor pipe sealing plate and the anchor backing plate are provided with a center hole; the cable guide pipe is arranged through the center hole.

[0022] The anchor box unit comprises an anchoring piece, anchor pull plates and a cable guide pipe, wherein the anchoring piece comprises an anchoring box, an anchor pipe sealing plate and an anchor backing plate, tension of the cable is first transmitted to the anchor backing plate through the cable guide pipe, then transmitted to the anchoring box by the anchor backing plate, then transmitted to the anchor pull plates, and finally transmitted to the bridge through the anchor pull plates.

[0023] Further, the anchor box unit comprises an anchoring piece, anchor pull plates and a cable guide pipe, wherein the anchoring piece comprises an anchoring box, an anchor pipe sealing plate and an anchor backing plate, tension of the cable is first transmitted to the anchor backing plate through the cable guide pipe, then transmitted to the anchoring box by the anchor backing plate, then transmitted to the anchor pull plates, and finally transmitted to the bridge through the anchor pull plates.

[0024] The anchor box unit comprises an anchoring piece, anchor pull plates and a cable guide pipe, wherein the anchoring piece comprises an anchoring box, an anchor pipe sealing plate and an anchor backing plate, tension of the cable is first transmitted to the anchor backing plate through the cable guide pipe, then transmitted to the anchoring box by the anchor backing plate, then transmitted to the anchor pull plates, and finally transmitted to the bridge through the anchor pull plates.

[0025] Advantageous effects

[0026] The double-layer inclined support cantilever arm type full bolt bridge of the utility model sets up upper and lower bridge deck structures, wherein the upper bridge deck structure runs a two-way six-lane first-class highway, and the lower bridge deck structure runs a double-line high-speed railway, so that the utilization rate and the trafficability of the bridge are greatly improved; meanwhile, a plurality of components in the bridge are connected through high-strength bolts, the high-strength bolt is a special bolt with extremely high tensile strength and can bear a great load without breaking, and the high-strength bolt can ensure that the components are fixed more stably and ensure the stability of the bridge. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic view of the double-layer inclined support cantilever arm type full bolt bridge;

[0028] Figure 2 It is a side view of the main truss; It is a side view of the main truss;

[0029] Figure 3 Figure 1 is a side view of a double-layered inclined support cantilevered full bolted bridge;

[0030] Figure 4 Figure 2 is a structural schematic diagram of a steel bridge deck and a lower bridge deck structure;

[0031] Figure 5 Figure 3 is a structural schematic diagram of a steel-concrete combined bridge deck;

[0032] Figure 6 Figure 4 is a structural schematic diagram of a lower bridge deck structure;

[0033] Figure 7 Figure 5 is a structural schematic diagram of a sub-truss chord and an anchor box unit;

[0034] Figure 8 Figure 6 is a structural schematic diagram of an anchor box unit.

[0035] In the drawings: 1, upper bridge deck structure; 2, lower bridge deck structure; 3, support; 4, bridge tower; 5, cable; 6, bridge pile; 11, sub-truss chord; 12, steel bridge deck; 13, steel-concrete combined bridge deck; 21, lower steel plate; 22, lower cross beam; 31, main truss; 32, connecting plate; 33, inclined support; 41, cable anchorage; 111, anchor box unit; 121, upper steel plate; 122, upper cross beam; 131, concrete plate; 132, upper longitudinal beam; 311, upper chord; 312, lower chord; 313, web; 1111, anchor; 1112, anchor plate; 1113, cable guide pipe; 1211, upper middle steel plate; 1212, upper outer steel plate; 3131, straight web; 3132, inclined web; 11111, anchor box; 11112, anchor pipe sealing plate; 11113, anchor pad. DETAILED DESCRIPTION

[0036] Example 1

[0037] As Figures 1 to 4The double-layer inclined support cantilever full bolt bridge shown comprises an upper deck structure 1, a lower deck structure 2 and a support 3; the upper deck structure 1 is arranged above the lower deck structure 2; the width of the upper deck structure 1 is greater than the width of the lower deck structure 2; the support 3 is arranged between the upper deck structure 1 and the lower deck structure 2; the support 3 comprises a main truss 31; the main truss 31 adopts an N truss type; the main truss 31 comprises upper chords 311, lower chords 312 and web members 313; the upper chords 311 and the lower chords 312 adopt a box section; the upper chords 311 are arranged in the upper deck structure 1; the connecting portions of two adjacent upper chords 311 are provided with connecting plates 32 which are connected by high-strength bolts; the connecting plates 32 are rectangular thin plates; a plurality of high-strength bolts are arranged on the connecting plates 32; the lower chords 312 are arranged outside the lower deck structure 2; the connecting portions of two adjacent lower chords 312 are provided with connecting plates 32 which are connected by high-strength bolts; the upper chords 311 and the lower chords 312 are symmetrically arranged; the two ends of the web members 313 are provided with connecting plates 32; one end of the web members 313 is connected to the upper chords 311 by high-strength bolts on the connecting plates 32, and the other end is connected to the lower chords 312 by high-strength bolts on the connecting plates 32.

[0038] The double-layer inclined support cantilever full bolt bridge comprises an upper deck structure 1, a lower deck structure 2 and a support 3, and the upper and lower deck structures are arranged, wherein the upper deck structure 1 runs a bidirectional six-lane first-class highway, and the lower deck structure 2 runs a double-line high-speed railway and can pass trains, automobiles and the like, greatly improving the utilization rate and passability of the bridge. The support 3 is arranged between the upper deck structure 1 and the lower deck structure 2, wherein the main truss 31 comprises upper chords 311, lower chords 312 and web members 313, the main truss 31 connects the upper deck structure 1 and the lower deck structure 2, and can also disperse the load transmitted by the deck to each member, and the main truss 31 comprises a plurality of upper chords 311, lower chords 312 and web members 313, two adjacent upper chords 311 and two adjacent lower chords 312 in the main truss 31 are connected by high-strength bolts, and the web members 313 are also connected to the upper chords 311 and the lower chords 312 by high-strength bolts, the high-strength bolt is a special bolt with extremely high tensile strength and can withstand extremely large loads without breaking, and therefore the use of the high-strength bolt can ensure the stability of the bridge.

[0039] As Figure 3 and Figure 4As shown, the support 3 also comprises a diagonal brace 33; the diagonal brace 33 adopts an I-shaped section; the outer side of the upper deck structure 1 is provided with a secondary chord 11; the connecting position of the adjacent two secondary chords 11 is provided with a connecting plate 32, which is connected through high-strength bolts on the connecting plate 32; the connecting position of one end of the diagonal brace 33 and the lower chord 312 is provided with a connecting plate 32, which is connected through high-strength bolts on the connecting plate 32; the connecting position of the other end of the diagonal brace 33 and the secondary chord 11 is provided with a connecting plate 32, which is connected through high-strength bolts on the connecting plate 32.

[0040] The outer side of the upper deck structure 1 is provided with a secondary chord 11, and the diagonal brace 33 in the support 3 connects the lower chord 312 and the secondary chord 11, which plays a supporting role for the secondary chord 11 and can also transfer the load generated by the upper deck structure. Meanwhile, the adjacent two secondary chords 11, the diagonal brace 33, the lower chord 312, and the diagonal brace 33 and the secondary chord 11 are all fixed through high-strength bolts, which can ensure that these components are fixed more stably.

[0041] As shown in Figure 4 The web member 313 comprises a straight web member 3131 and an inclined web member 3132; the straight web member 3131 is perpendicular to the lower chord 312; the inclined web member 3132 is inclined to the lower chord 312; the connecting position of the straight web member 3131 and the upper chord 311 and the lower chord 312 is provided with a connecting plate 32, which is connected through high-strength bolts on the connecting plate 32; the connecting position of the inclined web member 3132 and the upper chord 311 and the lower chord 312 is provided with a connecting plate 32, which is connected through high-strength bolts on the connecting plate 32.

[0042] The web member 313 can play a role in stabilizing the structure and improving the rigidity in the structure of the main truss 31, which comprises a straight web member 3131 and an inclined web member 3132, and both the straight web member 3131 and the inclined web member 3132 can bear the load transferred by the upper deck structure. Meanwhile, the straight web member 3131 or the inclined web member 3132 and the upper chord 311 or the lower chord 312 are all fixed through high-strength bolts, which can ensure that these components are fixed more stably.

[0043] As shown in Figure 4 and Figure 5 The upper deck structure 1 comprises a steel deck 12 and a steel-concrete combined deck 13; the steel deck 12 and the steel-concrete combined deck 13 are arranged adjacent to each other.

[0044] The upper deck structure 1 comprises a steel deck 12 and a steel-concrete combined deck 13; the main structure of the steel deck 12 is made of steel, which has the characteristics of high strength, simple structure, convenient construction, and light weight, while the steel-concrete combined deck 13 is provided with a concrete slab 131 above the steel beam, which has both the strength of the steel beam and the durability of the concrete slab.

[0045] AsFigure 4 As shown in the figure, the steel bridge deck 12 is an orthotropic steel bridge deck, which comprises an upper layer steel plate 121 and a plurality of upper layer cross beams 122; the material of the upper layer cross beams 122 is steel; the upper chord 311 divides the upper layer steel plate 121 into an upper layer middle steel plate 1211 and two upper layer outer steel plates 1212; the connection between the upper layer middle steel plate 1211 and the upper chord 311 is provided with a connecting plate 32, which is connected by high-strength bolts on the connecting plate 32; the connection between the upper layer outer steel plate 1212 and the upper chord 311 and the secondary truss chord 11 is provided with a connecting plate 32, which is connected by high-strength bolts on the connecting plate 32; in the steel bridge deck 12, the secondary truss chord 11 adopts a box-shaped cross section; the plurality of upper layer cross beams 122 are arranged in parallel; the upper layer cross beams 122 adopt an I-shaped cross section; the plurality of upper layer cross beams 122 are arranged perpendicularly to the plane where the main truss 31 is located; the connection between the upper layer cross beams 122 and the upper chord 311 is provided with a connecting plate 32, which is connected by high-strength bolts on the connecting plate 32; the upper layer steel plate 121 is arranged above the plurality of upper layer cross beams 122; in the steel bridge deck 12, the web 313 adopts an I-shaped cross section.

[0046] The steel bridge deck 12 comprises the upper layer steel plate 121 and the plurality of upper layer cross beams 122, which mainly bear and disperse the load brought from above, and at the same time, the arrangement of the upper layer cross beams 122 can increase the lateral stiffness of the bridge, ensuring the overall stability and safety of the bridge. The upper layer middle steel plate 1211 and its adjacent upper layer outer steel plate 1212 in the upper layer steel plate 121 are connected by high-strength bolts, thereby assembling into a complete upper layer steel plate 121.

[0047] As shown in the figure, Figure 5 The steel-concrete combined bridge deck 13 comprises a concrete plate 131, a plurality of upper layer cross beams 122 and a plurality of upper layer longitudinal beams 132; the materials of the upper layer cross beams 122 and the upper layer longitudinal beams 132 are steel; the plurality of upper layer cross beams 122 are arranged in parallel; the plurality of upper layer cross beams 122 are arranged perpendicularly to the plane where the main truss 31 is located; the plurality of upper layer longitudinal beams 132 are arranged in parallel; the upper layer longitudinal beams 132 are arranged perpendicularly to the plurality of upper layer cross beams 122; the connection between the upper layer longitudinal beams 132 and the upper layer cross beams 122 is provided with a connecting plate 32, which is connected by high-strength bolts on the connecting plate 32; the concrete plate 131 is arranged above the plurality of upper layer cross beams 122 and the plurality of upper layer longitudinal beams 132; the upper layer longitudinal beams 132 and the upper layer cross beams 122 adopt an I-shaped cross section; in the steel-concrete combined bridge deck 13, the secondary truss chord 11 adopts an I-shaped cross section, and the web 313 adopts a box-shaped cross section.

[0048] The steel-concrete combined bridge deck 13 comprises the concrete plate 131, the plurality of upper layer cross beams 122 and the plurality of upper layer longitudinal beams 132, which can bear and disperse the load brought from above, and both of them can ensure the overall stability and safety of the bridge.

[0049] As shown in the figure, Figure 6As shown, the lower bridge deck structure 2 is a composite stainless steel orthotropic plate bridge deck, including a lower steel plate 21 and a plurality of lower cross beams 22; the material of the lower cross beams 22 is steel; a connecting plate 32 is arranged at the connecting position of the lower steel plate 21 and the lower chord 312, and is connected through high-strength bolts on the connecting plate 32; the plurality of lower cross beams 22 are arranged in parallel; the plurality of lower cross beams 22 are arranged perpendicular to the plane where the main truss 31 is located; the lower steel plate 21 is arranged above the plurality of lower cross beams 22.

[0050] The lower bridge deck structure 2 includes the lower steel plate 21 and the plurality of lower cross beams 22, the lower cross beams 22 mainly bear and disperse the load brought thereon, and at the same time, the arrangement of the lower cross beams 22 can increase the lateral stiffness of the bridge, and ensure the overall stability and safety of the bridge.

[0051] As shown in Figure 7 As shown, the upper side of the sub-truss chord 11 is further provided with a plurality of anchor box units 111; the anchor box units 111 are arranged on the upper side of the sub-truss chord 11 through welding; the plurality of anchor box units 111 are arranged at intervals.

[0052] The anchor box unit 111 is a key point of the force of the whole bridge, is arranged on the upper side of the sub-truss chord 11 through welding, and is a component for fixing the inhaul cable 5, and can be used for receiving and transmitting the tension of the inhaul cable 5.

[0053] As shown in Figure 8 As shown, the anchor box unit 111 includes an anchorage 1111, an anchor plate 1112 and a cable guide pipe 1113; the anchorage 1111 is a kind of structural box; the cable guide pipe 1113 is a cylinder with a through hole in the middle; the anchor plate 1112 has two; the two anchor plates 1112 are oppositely arranged; the anchorage 1111 is arranged between the two anchor plates 1112; the anchorage 1111 includes an anchoring box 11111, an anchor pipe sealing plate 11112 and an anchor pad plate 11113; the anchor pipe sealing plate 11112 and the anchor pad plate 11113 are oppositely arranged; the anchor pipe sealing plate 11112 and the anchor pad plate 11113 are respectively arranged on the two sides of the anchoring box 11111; the anchor pipe sealing plate 11112 and the anchor pad plate 11113 are provided with a center hole; the center hole is circular; the cable guide pipe 1113 is arranged through the center hole.

[0054] The anchor box unit 111 includes the anchorage 1111, the anchor plate 1112 and the cable guide pipe 1113, wherein the anchorage 1111 includes the anchoring box 11111, the anchor pipe sealing plate 11112 and the anchor pad plate 11113, the tension of the inhaul cable 5 is first transmitted to the anchor pad plate 11113 through the cable guide pipe 1113, then transmitted to the anchoring box 11111 through the anchor pad plate 11113, then transmitted to the anchor plate 1112, and finally transmitted to the bridge through the anchor plate 1112.

[0055] As shown in Figure 1As shown, the bridge further comprises a tower 4, a cable 5 and a pile 6; the lower deck structure 2 is arranged on the pile 6; the tower 4 is provided with a cable anchor 41; one end of the cable 5 is connected to the cable anchor 41, and the other end is fixed through a cable guide 1113.

[0056] The tower 4 is provided with a cable anchor 41 for fixing one end of the cable 5, and the other end of the cable 5 is fixed through the cable guide 1113, so that the position of the cable 5 is fixed. The pile 6 bears the load generated by the upper and lower deck structures arranged above it, and transmits the load to the relatively hard soil layer below it.

Claims

1. A two-tiered diagonal braced cantilevered full bolted bridge characterized by: The utility model provides a kind of double-layer bridge deck structure, including upper bridge deck structure (1), lower bridge deck structure (2) and support (3);The upper bridge deck structure (1) is set to the upper of lower bridge deck structure (2);The width of the upper bridge deck structure (1) is greater than the width of lower bridge deck structure (2);The support (3) is set between upper bridge deck structure (1) and lower bridge deck structure (2);The support (3) includes main truss (31);The main truss (31) includes upper chord (311), lower chord (312) and web member (313);The upper chord (311) is set in upper bridge deck structure (1);The connecting place of adjacent two upper chords (311) is equipped with connecting plate (32), is connected by high-strength bolt on connecting plate (32);The lower chord (312) is set to the outside of lower bridge deck structure (2);The connecting place of adjacent two lower chords (312) is equipped with connecting plate (32), is connected by high-strength bolt on connecting plate (32);The upper chord (311) and lower chord (312) are symmetrically arranged;The both ends of web member (313) are equipped with connecting plate (32);One end of web member (313) is connected with upper chord (311) by high-strength bolt on connecting plate (32), and the other end is connected with lower chord (312) by high-strength bolt on connecting plate (32).

2. The two-level diaphragm-supported cantilevered full- bolted bridge of claim 1, wherein: The support (3) further includes diagonal brace (33);The outside of the upper bridge deck structure (1) is equipped with vice truss chord (11);The connecting place of adjacent two vice truss chords (11) is equipped with connecting plate (32), is connected by high-strength bolt on connecting plate (32);One end of diagonal brace (33) is equipped with connecting plate (32) with the connecting place of lower chord (312), is connected by high-strength bolt on connecting plate (32);The other end of diagonal brace (33) is equipped with connecting plate (32) with the connecting place of vice truss chord (11), is connected by high-strength bolt on connecting plate (32).

3. The two-level batter-supported cantilevered full bolted bridge of claim 1, wherein: The web member (313) includes straight web member (3131) and inclined web member (3132);The straight web member (3131) is perpendicular to lower chord (312) and is arranged;The inclined web member (3132) is inclined to lower chord (312) and is arranged;The connecting place of straight web member (3131) and upper chord (311) and lower chord (312) is equipped with connecting plate (32), is connected by high-strength bolt on connecting plate (32);The connecting place of inclined web member (3132) and upper chord (311) and lower chord (312) is equipped with connecting plate (32), is connected by high-strength bolt on connecting plate (32).

4. The two-level batter-strut cantilevered full bolted bridge of claim 2, wherein: The upper bridge deck structure (1) includes steel bridge deck (12) and steel-mixing combined bridge deck (13);The steel bridge deck (12) and steel-mixing combined bridge deck (13) are adjacently arranged.

5. The two-level batter-strut cantilevered full bolted bridge of claim 4, wherein: The steel bridge deck (12) comprises an upper layer steel plate (121) and a plurality of upper layer cross beams (122); the upper chord (311) divides the upper layer steel plate (121) into an upper layer middle steel plate (1211) and two upper layer outer steel plates (1212); the connection between the upper layer middle steel plate (1211) and the upper chord (311) is provided with a connecting plate (32) connected by high-strength bolts on the connecting plate (32); the connection between the upper layer outer steel plate (1212) and the upper chord (311) and the secondary truss chord (11) is provided with a connecting plate (32) connected by high-strength bolts on the connecting plate (32); the plurality of upper layer cross beams (122) are arranged in parallel; the plurality of upper layer cross beams (122) are arranged perpendicular to the plane where the main truss (31) is located; the connection between the upper layer cross beam (122) and the upper chord (311) is provided with a connecting plate (32) connected by high-strength bolts on the connecting plate (32); and the upper layer steel plate (121) is arranged above the plurality of upper layer cross beams (122).

6. The two-level batter-strut cantilevered full bolted bridge of claim 4, wherein: The steel-concrete combined bridge deck (13) comprises a concrete slab (131), a plurality of upper layer cross beams (122) and a plurality of upper layer longitudinal beams (132); the plurality of upper layer cross beams (122) are arranged in parallel; the plurality of upper layer cross beams (122) are arranged perpendicular to the plane where the main truss (31) is located; the plurality of upper layer longitudinal beams (132) are arranged in parallel; the upper layer longitudinal beam (132) is arranged perpendicular to the plurality of upper layer cross beams (122); the connection between the upper layer longitudinal beam (132) and the upper layer cross beam (122) is provided with a connecting plate (32) connected by high-strength bolts on the connecting plate (32); and the concrete slab (131) is arranged above the plurality of upper layer cross beams (122) and the plurality of upper layer longitudinal beams (132).

7. The two-level diaphragm-supported cantilevered full- bolted bridge of claim 1, wherein: The lower layer bridge deck structure (2) comprises a lower layer steel plate (21) and a plurality of lower layer cross beams (22); the connection between the lower layer steel plate (21) and the lower chord (312) is provided with a connecting plate (32) connected by high-strength bolts on the connecting plate (32); the plurality of lower layer cross beams (22) are arranged in parallel; the plurality of lower layer cross beams (22) are arranged perpendicular to the plane where the main truss (31) is located; and the lower layer steel plate (21) is arranged above the plurality of lower layer cross beams (22).

8. The two-level diaphragm-supported cantilevered full- bolted bridge of claim 2, wherein: The upper side of the secondary truss chord (11) is further provided with a plurality of anchor box units (111); the plurality of anchor box units (111) are arranged at intervals.

9. The two-level batter-strut cantilevered full bolted bridge of claim 8, wherein: The anchor box unit (111) comprises an anchor (1111), anchor pull plates (1112) and a cable guide pipe (1113); the anchor pull plates (1112) are two; the two anchor pull plates (1112) are oppositely arranged; the anchor (1111) is arranged between the two anchor pull plates (1112); the anchor (1111) comprises an anchor box (11111), an anchor pipe sealing plate (11112) and an anchor backing plate (11113); the anchor pipe sealing plate (11112) and the anchor backing plate (11113) are oppositely arranged; the anchor pipe sealing plate (11112) and the anchor backing plate (11113) are respectively arranged on the two sides of the anchor box (11111); the anchor pipe sealing plate (11112) and the anchor backing plate (11113) are provided with central holes; the cable guide pipe (1113) is arranged through the central holes.

10. The two-level batter-strut cantilevered full bolted bridge of claim 9, wherein: Further comprising a bridge tower (4), a cable (5) and a bridge pile (6); the lower deck structure (2) is arranged on the bridge pile (6); the bridge tower (4) is provided with a cable anchor (41); one end of the cable (5) is connected with the cable anchor (41), and the other end is fixed through the cable guide pipe (1113).

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