CN104088221A - T-shaped plate girder segment prefabricating unit based on steel truss and combined bridge deck slab - Google Patents
T-shaped plate girder segment prefabricating unit based on steel truss and combined bridge deck slab Download PDFInfo
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- CN104088221A CN104088221A CN201410373604.0A CN201410373604A CN104088221A CN 104088221 A CN104088221 A CN 104088221A CN 201410373604 A CN201410373604 A CN 201410373604A CN 104088221 A CN104088221 A CN 104088221A
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Abstract
The invention discloses a T-shaped plate girder segment prefabricating unit based on a steel truss and a combined bridge deck slab. The T-shaped plate girder segment prefabricating unit comprises a lower force bearing structure and the combined bridge deck slab arranged on the lower force bearing structure, and the combined bridge deck slab and the lower force bearing structure are both arranged in the longitudinal bridge direction; the lower force bearing structure is a planar truss composed of an upper chord rod, a lower chord rod and a web rod, the upper chord rod comprises a first rectangular steel tube, and the lower chord rod comprises a second rectangular steel tube; the combined bridge deck slab comprises a bottom supporting steel plate, a plurality of upper longitudinal ribs arranged on the bottom supporting steel plate, and a concrete bridge deck slab arranged on the bottom supporting steel plate in a pouring mode, the upper longitudinal ribs are arranged in the concrete bridge deck slab in a pouring mode, and the upper longitudinal ribs are long-strip-shaped steel plates with the middles provided with a plurality of through holes; the bottom supporting steel plate is a rectangular supporting steel plate formed by connecting a left extension steel plate, a right extension steel plate and a first rectangular steel tube. The T-shaped plate girder segment prefabricating unit is simple in structure, reasonable in design, easy and convenient to construct, good in overall mechanical property and capable of improving the structure accuracy and construction convenience of a steel and concrete combined bridge.
Description
Technical field
The invention belongs to bridge construction field of engineering technology, especially relate to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck.
Background technology
Steel-mixed combined bridge is the novel bridge form of structure growing up at home in recent years, because it has given full play to steel work and concrete structure separately and compound action, has at home more wide application prospect.Steel purlin bridge is strong and be convenient to realize factorial construction from heavy and light, span ability, is one of at present popular a kind of bridge type.And floor system plays an important role in bridge, its not only can with beam common combination bearing load, and ensure driving ride comfort and comfortableness.
The bridge deck of conventional steel purlin bridge can adopt steel bridge deck or concrete slab, wherein concrete slab with its cost low and with Asphalt Concrete Deck Pavement caking property and the advantage such as following is better, be relatively widely used in greatly across or Medium Span steel purlin bridge in.When practice of construction, concrete slab construction can adopt cast-in-place or two kinds of modes of prefabrication.The long construction period of cast-in-situ concrete bridge deck and a large amount of templates of needs.For the reduction of erection time, simplify on-site construction processes, precast concrete bridge deck with the obvious advantage.But be generally by the connecting keys such as WELDING STUDS are set, bridge deck to be connected with girder steel at present, bridge floor local stress is large, and joint efficiency is lower, and WELDING STUDS welding quantity is various, and speed of application is slow.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck is provided, its simple in structure, reasonable in design and easy construction, overall mechanical property are good, can effectively improve structure accuracy and the construction convenience of steel reinforced concrete combined bridge.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: comprise bottom load-carrying construction and be laid in the combined bridge deck on the load-carrying construction of described bottom, described combined bridge deck be positioned at described bottom load-carrying construction directly over and the two be vertical laying, described combined bridge deck and described bottom load-carrying construction are all along the vertical bridge of institute's construction bridges to laying; Described bottom load-carrying construction be by one upper chord, one lower chord and be connected in upper chord and lower chord between the plane frame that forms of multiple tracks web member, described lower chord be positioned at upper chord under and the two be parallel laying; Described upper chord comprises the first rectangular steel pipe, on four inside walls of described the first rectangular steel pipe, is laid with the first longitudinal stiffener; Described lower chord comprises the second rectangular steel pipe, on four inside walls of described the second rectangular steel pipe, is laid with the second longitudinal stiffener; Described the first longitudinal stiffener and the second longitudinal stiffener are all along the vertical bridge of institute's construction bridges to laying; Described combined bridge deck comprises bottom support steel plate, is laid in the multiple tracks on described bottom support steel plate and puts and indulge rib and build the concrete slab on described bottom support steel plate from left to right, on described in multiple tracks, putting vertical rib all builds in concrete slab, on described in multiple tracks, put vertical rib and be all vertical laying with described bottom support steel plate along the vertical bridge of institute's construction bridges to laying and its, structure and the size of on described in multiple tracks, putting vertical rib are all identical, and putting vertical rib on described is the strip steel plate that middle part has multiple through holes from front to back; The described bottom support steel plate rectangle supporting steel plate that left extension steel plate, right extension steel plate and the first rectangular steel pipe connect into of serving as reasons, described left extension steel plate and right extension steel plate are laid in respectively the left and right sides of the first rectangular steel pipe, described left extension steel plate connect as one with the first rectangular steel pipe with right extension steel plate and three's end face mutually concordant.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: the quantity Wei Si road of first longitudinal stiffener of laying in described the first rectangular steel pipe, described in four roads, the first longitudinal stiffener is laid in respectively four inside wall middle parts of the first rectangular steel pipe, and described the first longitudinal stiffener is vertical laying with its inside wall of laying the first rectangular steel pipe; The quantity Wei Si road of second longitudinal stiffener of laying in described the second rectangular steel pipe, described in four roads, the second longitudinal stiffener is laid in respectively four inside wall middle parts of the second rectangular steel pipe, and described the second longitudinal stiffener is vertical laying with its inside wall of laying the second rectangular steel pipe.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: described upper chord and lower chord are encased structures, described upper chord also comprises first concrete structure of building in the first rectangular steel pipe, and described the first longitudinal stiffener is built in described the first concrete structure; Described lower chord also comprises second concrete structure of building in the second rectangular steel pipe, and described the second longitudinal stiffener is built in described the second concrete structure.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: described the first longitudinal stiffener is that strip steel plate and its are weldingly fixed on the inside wall of the first rectangular steel pipe, described the second longitudinal stiffener is that strip steel plate and its are weldingly fixed on the inside wall of the second rectangular steel pipe.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: described combined bridge deck is level and lays, described bottom load-carrying construction is vertically to laying, and the apical side height of described concrete slab is higher than the apical side height of above putting vertical rib.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, is characterized in that: the height of putting vertical rib on described is 200mm～300mm, and the end face of described concrete slab and the spacing of above putting between vertical rib end face are 50mm～100mm.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, is characterized in that: the width of described bottom support steel plate is 2.5m～6m, and the spacing of putting between vertical rib on described in adjacent twice is 400mm～600mm.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, is characterized in that: on described in multiple tracks, put vertical rib and be even laying.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: the quantity of described combined bridge deck and described bottom load-carrying construction is multiple, multiple described bottoms load-carrying construction is parallel laying, multiple described combined bridge decks are laid at grade and it connects as one a monolithic bridge floor architecture of formation, between the concrete slab of adjacent two described combined bridge decks, connect by wet seam; The left and right sides of described bottom support steel plate all extend out to concrete slab outside, and the bottom support Plate Welding of adjacent two described combined bridge decks is fixed as one.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: also comprise the direction across bridge connecting reinforcement that multiple tracks is laid from front to back, the through hole that described direction across bridge connecting reinforcement is put vertical rib on from left to right in described monolithic bridge floor architecture passes; Described direction across bridge connecting reinforcement is prestressing tendon or is laid in respectively by multiple tracks the splice bar that the plain bars in multiple described combined bridge decks is formed by connecting, and described prestressing tendon outside is set with bellows.
Above-mentioned a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: described the first rectangular steel pipe by top board, base plate below described top board and be connected in top board and the base plate left and right sides between left plate and right plate form, described left extension steel plate and right extension steel plate and described top board processing and fabricating are integrated.
The present invention compared with prior art has the following advantages:
1, simple in structure, reasonable in design and easy construction, construction cost is lower.
2, can realize batch production prefabricated, making, transport and easy for installation, construction quality is easy to ensure, artificial and machinery expenses is low, can significantly shorten the site operation duration.Because member factory normalization is produced, steady quality, the bottom load-carrying construction adopting and combined bridge deck can carry out standardized production in factory, and efficiency of construction increases substantially.
3, between steel truss and combined bridge deck by put vertical rib and be connected, syndeton is simple, reasonable in design, and connects reliably.
4, deadweight is relatively light, mechanical property is superior and stress performance good, bearing capacity is high, rigidity is large, on put that vertical rib is welded in upper chord top board and steel plate top is extended in left and right, can effectively improve bridge deck rigidity, and on put vertical rib and establish perforate and can effectively strengthen the bonding strength between concrete slab and steel truss.
5, easy construction, can adopt the mode of welding left and right extension steel plate and the wet seam of construction concrete slab vertical horizontally-spliced when on-site consolidation construction, also can apply direction across bridge connecting reinforcement.
6, form of construction work is flexible, for improving the rigidity of structure and stability, alleviates integrally-built lifting weight simultaneously, and upper and lower chord member can building-site concrete perfusion.
7, the good and remarkable in economical benefits of construction quality, because member factory normalization is produced, structure precision is high, and construction quality is good, thereby repair rate is low.In addition, the forming panel machine of saving concrete slab in work progress props up die process, and economy is higher.And the combined bridge deck adopting and bottom load-carrying construction connect into entirety and carry out stressed, compatible deformation jointly.Thereby the present invention can solve steel truss and bridge deck connectivity problem, not only greatly improve the accuracy of institute's construction molding structure, and improved simplification and the agility of construction, also can effectively strengthen span ability and the comfort level of bridge simultaneously.
8, have a extensive future and applied widely.
In sum, simple in structure, the reasonable in design and easy construction of the present invention, overall mechanical property are good, can effectively improve structure accuracy and the construction convenience of steel reinforced concrete combined bridge.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is that vertical bridge of the present invention is to structural representation.
Fig. 3 is direction across bridge structural representation of the present invention.
Fig. 4 adopts the present invention to be assembled into the structural representation of monolithic bridge floor architecture.
Fig. 5 is the installation position schematic diagram that the present invention is assembled into direction across bridge prestressing tendon in monolithic bridge floor architecture.
Description of reference numerals:
1-upper chord; 1-1-the first rectangular steel pipe; 1-2-the first longitudinal stiffener;
2-lower chord; 2-1-the second rectangular steel pipe; 2-2-the second longitudinal stiffener;
3-1-left extension steel plate; 3-2-right extension steel plate; The vertical rib of 3-3-above put;
3-4-concrete slab; 3-5-through hole; 4-wet seam;
5-1-the first web member; 5-2-the second web member; 6-prestressing tendon.
Detailed description of the invention
A kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck as shown in Figure 1, Figure 2 and Figure 3, comprise bottom load-carrying construction and be laid in the combined bridge deck on the load-carrying construction of described bottom, described combined bridge deck be positioned at described bottom load-carrying construction directly over and the two be vertical laying, described combined bridge deck and described bottom load-carrying construction are all along the vertical bridge of institute's construction bridges to laying.
Described bottom load-carrying construction be by one upper chord 1, one lower chord 2 and be connected in upper chord 1 and lower chord 2 between the plane frame that forms of multiple tracks web member, described lower chord 2 be positioned at upper chord 1 under and the two be parallel laying.Described upper chord 1 comprises the first rectangular steel pipe 1-1, on four inside walls of described the first rectangular steel pipe 1-1, is laid with the first longitudinal stiffener 1-2; Described lower chord 2 comprises the second rectangular steel pipe 2-1, on four inside walls of described the second rectangular steel pipe 2-1, is laid with the second longitudinal stiffener 2-2.Described the first longitudinal stiffener 1-2 and the second longitudinal stiffener 2-2 are all along the vertical bridge of institute's construction bridges to laying.
Described combined bridge deck comprises bottom support steel plate, be laid in from left to right in the multiple tracks on described bottom support steel plate and put vertical rib 3-3 and build the concrete slab 3-4 on described bottom support steel plate, on described in multiple tracks, putting vertical rib 3-3 all builds in concrete slab 3-4, on described in multiple tracks, put vertical rib 3-3 and be all vertical laying with described bottom support steel plate along the vertical bridge of institute's construction bridges to laying and its, structure and the size of on described in multiple tracks, putting vertical rib 3-3 are all identical, on described, putting vertical rib 3-3 is the strip steel plate that middle part has multiple through hole 3-5 from front to back.The described bottom support steel plate rectangle supporting steel plate that left extension steel plate 3-1, right extension steel plate 3-2 and the first rectangular steel pipe 1-1 connect into of serving as reasons, described left extension steel plate 3-1 and right extension steel plate 3-2 are laid in respectively the left and right sides of the first rectangular steel pipe 1-1, described left extension steel plate 3-1 connect as one with the first rectangular steel pipe 1-1 with right extension steel plate 3-2 and three's end face mutually concordant.
In the present embodiment, the structure of multiple described through hole 3-5 and size are all identical, and described through hole 3-5 is circular.And multiple described through hole 3-5 are even laying.
In the present embodiment, the quantity Wei Si road of the first longitudinal stiffener 1-2 that lays in described the first rectangular steel pipe 1-1, described in four roads, the first longitudinal stiffener 1-2 is laid in respectively four inside wall middle parts of the first rectangular steel pipe 1-1, and described the first longitudinal stiffener 1-2 is vertical laying with its inside wall of laying the first rectangular steel pipe 1-1.The quantity Wei Si road of the second longitudinal stiffener 2-2 that lays in described the second rectangular steel pipe 2-1, described in four roads, the second longitudinal stiffener 2-2 is laid in respectively four inside wall middle parts of the second rectangular steel pipe 2-1, and described the second longitudinal stiffener 2-2 is vertical laying with its inside wall of laying the second rectangular steel pipe 2-1.
In the present embodiment, described the first longitudinal stiffener 1-2 is that strip steel plate and its are weldingly fixed on the inside wall of the first rectangular steel pipe 1-1.Described the second longitudinal stiffener 2-2 is that strip steel plate and its are weldingly fixed on the inside wall of the second rectangular steel pipe 2-1.
Described upper chord 1 and lower chord 2 are encased structures, and described upper chord 1 also comprises first concrete structure of building in the first rectangular steel pipe 1-1, and described the first longitudinal stiffener 1-2 builds in described the first concrete structure; Described lower chord 2 also comprises second concrete structure of building in the second rectangular steel pipe 2-1, and described the second longitudinal stiffener 2-2 builds in described the second concrete structure.
Actually add man-hour, also can offer from front to back multiple circular holes at the first longitudinal stiffener 1-2 middle part, correspondingly, offer from front to back multiple circular holes at the second longitudinal stiffener 2-2 middle part.
In the present embodiment, described upper chord 1 is all identical with structure and the size of lower chord 2.Described lower chord 2 be positioned at upper chord 1 under.
In the present embodiment, described web member is the first web member 5-1 that is vertical laying with upper chord 1, the quantity of described the first web member 5-1 is that the first web member 5-1 is parallel laying described in multiple tracks and multiple tracks, and the first web member 5-1 is even laying described in multiple tracks, and the first web member 5-1 is rectangular steel pipe.
Simultaneously, described in adjacent twice, between the first web member 5-1, be also provided with four road the second web member 5-2, the second web member 5-2 laying that assumes diamond in shape described in four roads, described in Qie Si road, the second web member 5-2 comprises that web member and twice in twice are laid in the lower web member of upper web member below described in twice, described upper abdomen masthead end is fixed on upper chord 1 and its bottom is fixed on the middle part sidewall of the first web member 5-1, and described lower abdomen masthead end is fixed on lower chord 2 and its bottom is fixed on the middle part sidewall of the first web member 5-1.Between described the first web member 5-1 and upper chord 1 and lower chord 2, between described upper web member and upper chord 1 and the first web member 5-1 and between described lower web member and lower chord 2 and the first web member 5-1, be all connected by connecting bolt.In the present embodiment, the second web member 5-2 is rectangular steel pipe.
In the present embodiment, described the first rectangular steel pipe 1-1 by top board, base plate below described top board and be connected in top board and the base plate left and right sides between left plate and right plate form, described left extension steel plate 3-1 and right extension steel plate 3-2 and described top board processing and fabricating are integrated.That is to say, described left extension steel plate 3-1 and right extension steel plate 3-2 and described top board composition bottom support steel plate, described bottom support steel plate is a monolithic steel plate.
Correspondingly, described the second rectangular steel pipe 2-1 is also assembled by four block plates.
In the present embodiment, described combined bridge deck is level to be laid, and described bottom load-carrying construction is vertically to laying, and the apical side height of described concrete slab 3-4 is higher than the apical side height of above putting vertical rib 3-3.
When practice of construction, the height of putting vertical rib 3-3 on described is 200mm～300mm, and the end face of described concrete slab 3-4 is 50mm～100mm with above putting the spacing of indulging between rib 3-3 end face.
The width of described bottom support steel plate is 2.5m～6m, and the spacing of putting between vertical rib 3-3 on described in adjacent twice is 400mm～600mm.
When practice of construction, can also be according to specific needs, to above put vertical rib 3-3 height, concrete slab 3-4 end face with above put described in the width of spacing between vertical rib 3-3 end face, bottom support steel plate and adjacent twice on put the spacing of indulging between rib 3-3 and adjust accordingly.
Actually add man-hour, the left and right sides of described bottom support steel plate all extend out to concrete slab 3-4 outside.In the present embodiment, the width that the described bottom support steel plate left and right sides extend out to concrete slab 3-4 outside is all identical.
In the present embodiment, put vertical rib 3-3 on described in multiple tracks and be even laying.
When practice of construction, as shown in Figure 4, Figure 5, the quantity of described combined bridge deck and described bottom load-carrying construction is multiple, multiple described bottoms load-carrying construction is parallel laying, multiple described combined bridge decks are laid at grade and it connects as one a monolithic bridge floor architecture of formation, between the concrete slab 3-4 of adjacent two described combined bridge decks, connect by wet seam 4, the bottom support Plate Welding of adjacent two described combined bridge decks is fixed as one.Correspondingly, the width that the described bottom support steel plate left and right sides extend out to concrete slab 3-4 outside is the wide half of seam of wet seam 4.Stretch out directly over the steel plate sections in concrete slab 3-4 outside the left and right sides that described wet seam 4 is positioned at described bottom support steel plate.In the present embodiment, the quantity of described combined bridge deck and described bottom load-carrying construction is 3.When practice of construction, can be according to specific needs, described combined bridge deck and the quantity of described bottom load-carrying construction and the size of each combined bridge deck are adjusted accordingly.
Meanwhile, the present invention also comprises the direction across bridge connecting reinforcement that multiple tracks is laid from front to back, and the through hole 3-5 that described direction across bridge connecting reinforcement is put vertical rib 3-3 on from left to right in described monolithic bridge floor architecture passes.Described direction across bridge connecting reinforcement is prestressing tendon 6 or is laid in respectively by multiple tracks the splice bar that the plain bars in multiple described combined bridge decks is formed by connecting, and described prestressing tendon 6 outsides are set with bellows.In the present embodiment, described direction across bridge connecting reinforcement is prestressing tendon 6, and prestressing tendon 6 two ends are provided with prestressed anchor.When practice of construction, described direction across bridge connecting reinforcement can be also the splice bar being formed by connecting by multiple tracks plain bars.
When reality is constructed to T shape plate girder precast segment unit, first assembled described bottom load-carrying construction, on the bottom support steel plate of described bottom load-carrying construction, lay again in multiple tracks and put and indulge rib 3-3, concreting forms concrete slab 3-4 afterwards, work progress is simple and realize conveniently short construction period.
In the time that described direction across bridge connecting reinforcement is prestressing tendon 6, before carrying out concreting, first in the multiple tracks in construct combined bridge deck, puts in vertical rib 3-3 and wear bellows, concreting more afterwards, the T shape plate girder precast segment unit of acquisition construction molding; Then, multiple T shape plate girder precast segments unit of construction molding is lifted respectively to construction location, the bellows of adjacent two described combined bridge decks that lifting is put in place connects, and form multiple splicing tubes of passing for prestressing tendon 6 described in multiple tracks respectively, and the bottom support Plate Welding of adjacent two described combined bridge decks is integrated, build the wet seam 4 between adjacent two described combined bridge decks simultaneously; Finally, in multiple described splicing tubes, penetrate respectively prestressing tendon 6, and stretch-draw, grouting and maintenance.
In the time that described direction across bridge connecting reinforcement is the splice bar being formed by connecting by multiple tracks plain bars, before carrying out concreting, first in the multiple tracks in constructed combined bridge deck, put in vertical rib 3-3 and wear plain bars, concreting more afterwards, obtains the T shape plate girder precast segment unit of construction molding; Then, multiple T shape plate girder precast segments unit of construction molding is lifted respectively to construction location, and the plain bars of adjacent two described combined bridge decks that lifting is put in place connects, splice bar described in formation multiple tracks, the bottom support Plate Welding of adjacent two described combined bridge decks is integrated simultaneously, and builds the wet seam 4 between adjacent two described combined bridge decks.Wherein, before wet seam 4 is built, first by the sidewall dabbing of adjacent two described combined bridge decks.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (10)
1. the T shape plate girder precast segment unit based on steel truss and combined bridge deck, it is characterized in that: comprise bottom load-carrying construction and be laid in the combined bridge deck on the load-carrying construction of described bottom, described combined bridge deck be positioned at described bottom load-carrying construction directly over and the two be vertical laying, described combined bridge deck and described bottom load-carrying construction are all along the vertical bridge of institute's construction bridges to laying, described bottom load-carrying construction for by one upper chord (1), one lower chord (2) and be connected in upper chord (1) and lower chord (2) between the plane frame that forms of multiple tracks web member, described lower chord (2) be positioned at upper chord (1) under and the two be parallel laying, described upper chord (1) comprises the first rectangular steel pipe (1-1), on four inside walls of described the first rectangular steel pipe (1-1), is laid with the first longitudinal stiffener (1-2), described lower chord (2) comprises the second rectangular steel pipe (2-1), on four inside walls of described the second rectangular steel pipe (2-1), is laid with the second longitudinal stiffener (2-2), described the first longitudinal stiffener (1-2) and the second longitudinal stiffener (2-2) are all along the vertical bridge of institute's construction bridges to laying, described combined bridge deck comprises bottom support steel plate, be laid in from left to right and in the multiple tracks on described bottom support steel plate, put vertical rib (3-3) and build the concrete slab (3-4) on described bottom support steel plate, on described in multiple tracks, putting vertical rib (3-3) all builds in concrete slab (3-4), on described in multiple tracks, put vertical rib (3-3) and be all vertical laying with described bottom support steel plate along the vertical bridge of institute's construction bridges to laying and its, structure and the size of on described in multiple tracks, putting vertical rib (3-3) are all identical, on described, putting vertical rib (3-3) is the strip steel plate that middle part has multiple through holes (3-5) from front to back, the described bottom support steel plate rectangle supporting steel plate that left extension steel plate (3-1), right extension steel plate (3-2) and the first rectangular steel pipe (1-1) connect into of serving as reasons, described left extension steel plate (3-1) and right extension steel plate (3-2) are laid in respectively the left and right sides of the first rectangular steel pipe (1-1), described left extension steel plate (3-1) connect as one with the first rectangular steel pipe (1-1) with right extension steel plate (3-2) and three's end face mutually concordant.
2. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck claimed in claim 1, it is characterized in that: the quantity Wei Si road of first longitudinal stiffener of laying (1-2) in described the first rectangular steel pipe (1-1), described in four roads, the first longitudinal stiffener (1-2) is laid in respectively four inside wall middle parts of the first rectangular steel pipe (1-1), and described the first longitudinal stiffener (1-2) is vertical laying with its inside wall of laying the first rectangular steel pipe (1-1); The quantity Wei Si road of second longitudinal stiffener of laying (2-2) in described the second rectangular steel pipe (2-1), described in four roads, the second longitudinal stiffener (2-2) is laid in respectively four inside wall middle parts of the second rectangular steel pipe (2-1), and described the second longitudinal stiffener (2-2) is vertical laying with its inside wall of laying the second rectangular steel pipe (2-1).
3. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck described in claim 1 or 2, it is characterized in that: described upper chord (1) and lower chord (2) are encased structures, described upper chord (1) also comprises first concrete structure of building in the first rectangular steel pipe (1-1), and described the first longitudinal stiffener (1-2) is built in described the first concrete structure; Described lower chord (2) also comprises second concrete structure of building in the second rectangular steel pipe (2-1), and described the second longitudinal stiffener (2-2) is built in described the second concrete structure.
4. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck described in claim 1 or 2, it is characterized in that: described the first longitudinal stiffener (1-2) is weldingly fixed on the inside wall of the first rectangular steel pipe (1-1) for strip steel plate and its, described the second longitudinal stiffener (2-2) is weldingly fixed on the inside wall of the second rectangular steel pipe (2-1) for strip steel plate and its.
5. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck described in claim 1 or 2, it is characterized in that: described combined bridge deck is level and lays, described bottom load-carrying construction is vertically to laying, and the apical side height of described concrete slab (3-4) is higher than the apical side height of above putting vertical rib (3-3).
6. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck claimed in claim 5, it is characterized in that: the height of putting vertical rib (3-3) on described is 200mm～300mm, the end face of described concrete slab (3-4) and the spacing of above putting between vertical rib (3-3) end face are 50mm～100mm; The width of described bottom support steel plate is 2.5m～6m, and the spacing of putting between vertical rib (3-3) on described in adjacent twice is 400mm～600mm.
7. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck described in claim 1 or 2, it is characterized in that: on described in multiple tracks, put vertical rib (3-3) and be even laying, the left and right sides of described bottom support steel plate all extend out to concrete slab (3-4) outside.
8. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck described in claim 1 or 2, it is characterized in that: the quantity of described combined bridge deck and described bottom load-carrying construction is multiple, multiple described bottoms load-carrying construction is parallel laying, multiple described combined bridge decks are laid at grade and it connects as one a monolithic bridge floor architecture of formation, between the concrete slab (3-4) of adjacent two described combined bridge decks, connect by wet seam (4); The left and right sides of described bottom support steel plate all extend out to concrete slab (3-4) outside, and the bottom support Plate Welding of adjacent two described combined bridge decks is fixed as one.
9. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck claimed in claim 8, it is characterized in that: also comprise the direction across bridge connecting reinforcement that multiple tracks is laid from front to back, the through hole (3-5) that described direction across bridge connecting reinforcement is put vertical rib (3-3) on from left to right in described monolithic bridge floor architecture passes; Described direction across bridge connecting reinforcement is prestressing tendon (6) or is laid in respectively by multiple tracks the splice bar that the plain bars in multiple described combined bridge decks is formed by connecting, and described prestressing tendon (6) outside is set with bellows.
10. according to a kind of T shape plate girder precast segment unit based on steel truss and combined bridge deck described in claim 1 or 2, it is characterized in that: described the first rectangular steel pipe (1-1) by top board, base plate below described top board and be connected in top board and the base plate left and right sides between left plate and right plate form, described left extension steel plate (3-1) and right extension steel plate (3-2) are integrated with described top board processing and fabricating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410373604.0A CN104088221B (en) | 2014-07-31 | 2014-07-31 | A kind of T-shaped plate girder precast segment unit based on steel truss and combined bridge deck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410373604.0A CN104088221B (en) | 2014-07-31 | 2014-07-31 | A kind of T-shaped plate girder precast segment unit based on steel truss and combined bridge deck |
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| Publication Number | Publication Date |
|---|---|
| CN104088221A true CN104088221A (en) | 2014-10-08 |
| CN104088221B CN104088221B (en) | 2015-11-25 |
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| CN104790289A (en) * | 2014-05-26 | 2015-07-22 | 北京地圣科创建设工程有限公司 | Steel composite PSC corrugated steel plate U-shaped girder simple bridge and continuous bridge |
| CN106223183A (en) * | 2016-09-13 | 2016-12-14 | 长安大学 | Assembled concrete-filled rectangular steel tube combination truss bridge and construction method |
| CN107447663A (en) * | 2017-07-31 | 2017-12-08 | 北京星河园林景观工程有限公司 | A kind of surface holeless wooden footway |
| CN108517793A (en) * | 2018-05-24 | 2018-09-11 | 南京梦联桥传感科技有限公司 | A kind of combination T beam bridges assembled lateral connection ruggedized construction and its reinforcement means |
| CN108842594A (en) * | 2018-07-12 | 2018-11-20 | 苏交科集团股份有限公司 | Prefabricated assembled steel-concrete composite beam and construction method thereof |
| CN108842593A (en) * | 2018-07-12 | 2018-11-20 | 苏交科集团股份有限公司 | Large-span assembly type steel-concrete composite beam and manufacturing method thereof |
| CN110644361A (en) * | 2019-11-07 | 2020-01-03 | 中国十七冶集团有限公司 | Steel-concrete composite beam bridge deck |
| CN110863418A (en) * | 2019-12-12 | 2020-03-06 | 长安大学 | Assembly type external prestress steel truss composite beam structure and construction method thereof |
| CN110905087A (en) * | 2019-11-07 | 2020-03-24 | 中交第二航务工程局有限公司 | Steel-concrete composite structure shear part connecting device and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104790289A (en) * | 2014-05-26 | 2015-07-22 | 北京地圣科创建设工程有限公司 | Steel composite PSC corrugated steel plate U-shaped girder simple bridge and continuous bridge |
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| CN106223183B (en) * | 2016-09-13 | 2018-07-27 | 长安大学 | Assembled concrete-filled rectangular steel tube combines truss bridge and construction method |
| CN107447663A (en) * | 2017-07-31 | 2017-12-08 | 北京星河园林景观工程有限公司 | A kind of surface holeless wooden footway |
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| CN108517793A (en) * | 2018-05-24 | 2018-09-11 | 南京梦联桥传感科技有限公司 | A kind of combination T beam bridges assembled lateral connection ruggedized construction and its reinforcement means |
| CN108842593A (en) * | 2018-07-12 | 2018-11-20 | 苏交科集团股份有限公司 | Large-span assembly type steel-concrete composite beam and manufacturing method thereof |
| CN108842594B (en) * | 2018-07-12 | 2023-08-11 | 苏交科集团股份有限公司 | Prefabricated assembled steel-concrete composite beam and construction method thereof |
| CN108842594A (en) * | 2018-07-12 | 2018-11-20 | 苏交科集团股份有限公司 | Prefabricated assembled steel-concrete composite beam and construction method thereof |
| CN110905087A (en) * | 2019-11-07 | 2020-03-24 | 中交第二航务工程局有限公司 | Steel-concrete composite structure shear part connecting device and construction method thereof |
| CN110644361A (en) * | 2019-11-07 | 2020-01-03 | 中国十七冶集团有限公司 | Steel-concrete composite beam bridge deck |
| CN110863418A (en) * | 2019-12-12 | 2020-03-06 | 长安大学 | Assembly type external prestress steel truss composite beam structure and construction method thereof |
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