CN105937203A - Reinforced joint structure of interface between reactive powder concrete layer and steel structure layer and construction method of reinforced joint structure - Google Patents
Reinforced joint structure of interface between reactive powder concrete layer and steel structure layer and construction method of reinforced joint structure Download PDFInfo
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- CN105937203A CN105937203A CN201610391786.3A CN201610391786A CN105937203A CN 105937203 A CN105937203 A CN 105937203A CN 201610391786 A CN201610391786 A CN 201610391786A CN 105937203 A CN105937203 A CN 105937203A
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- steel
- reinforcing bar
- shaped reinforcing
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- rpc
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Abstract
The invention discloses a reinforced joint structure of an interface between a reactive powder concrete layer and a steel structure layer and a construction method of the reinforced joint structure. The reinforced joint structure mainly aims at solving the technical problem that joints of a reactive powder concrete layer border and a steel structure border are quite prone to cracks under the action of temperature changes due to different materials. According to the technical scheme, the reinforced joint structure is characterized by comprising the reactive powder concrete layer (1), U-shaped steel bars (2) and steel structures (5); longitudinal steel bars (3) and transverse steel bars (7) are arranged in the reactive powder concrete layer (1), left branches (22) and right branches (23) of the U-shaped steel bars (2) are connected and welded to the transverse steel bars (7) in the reactive powder concrete layer (1), steel bar bottom edges (21) of the U-shaped steel bars (2) are connected and welded to the borders of the steel structures (5), the U-shaped steel bars (2) enable the reactive powder concrete layer (1) and the steel structures (5) to be connected into a whole, and the joints of the reactive powder concrete layer (1) and the borders of the steel structures (5) do not generate cracks. The reinforced joint structure is mainly applied to the fields of steel structure bridges and the like.
Description
Technical field
The present invention relates to RPC layer border seam, particularly relate to a kind of RPC layer and the strengthening seam construction at steel structural layer interface and construction method thereof.
Background technology
RPC is a kind of New Style Concrete Materials in recent years developed rapidly, because of comprcssive strength height, superhigh tenacity, advantage that endurance quality is superior, is successfully applied to the permanent bridge deck structure of important bridge.RPC layer border is different because of its material from steel construction border seam, easily producing crack under variations in temperature effect causes rainwater to immerse the surrounding structure face generation corrosion under RPC layer from crack, the durability of bridge structure will be had a greatly reduced quality, even jeopardize the durable safety of bridge.
Summary of the invention
It is an object of the invention to provide a kind of RPC layer and the strengthening seam construction at steel structural layer interface and construction method thereof.
The present invention solves the scheme of its technical problem employing: include RPC layer 1, U-shaped reinforcing bar 2, steel construction 5, RPC layer 1 is provided with longitudinal reinforcement 3 and transverse steel 7, before RPC layer 1 pours, the left limb 22 of U-shaped reinforcing bar 2 is connected and welds with the transverse steel 7 in RPC layer 1 with right limb 23 respectively, the reinforcing bar base 21 of U-shaped reinforcing bar 2 is connected with steel construction 5 border and welds, U-shaped reinforcing bar 2 connects RPC layer 1 becomes an entirety with steel construction 5, realize RPC layer 1 and do not produce crack with steel construction 5 border seam, prevent RPC internal and Steel Bridge Deck is caused structure durability to damage by harmful environmental material from the intrusion of interface seam crossing.
For optimizing U-shaped reinforcing steel bar bear state, more efficient performance material property, width between the two ends of the U-shaped reinforcing bar 2 of the present invention is 25-280mm, the left limb 22 of U-shaped reinforcing bar 2 and a length of 50mm-160mm of right limb 23, a diameter of 5mm-16mm of U-shaped reinforcing bar 2, adjacent two U-shaped reinforcing bar 2 spacing are 25mm-250mm.
The U-shaped reinforcing bar of steel 2 of the present invention left limb 22 and right limb 23 use plane to overlap welding manner respectively with the structure transverse steel 7 in RPC layer, fusion length is 50mm-160mm, and U-shaped reinforcing bar 2 is in same plane with transverse steel 7；U-shaped reinforcing bar one end is integrally forming after welding for steel structure, the other end is then integrally welded with transverse steel, organically steel construction and RPC layer being become a stress overall structure, the seam between RPC layer border and steel construction will not produce crack because of variations in temperature.
Employing two-sided full weld welding is welded on the U-shaped reinforcing bar reinforcing bar base 21 of the present invention with steel construction 5 border；U-shaped reinforcing bar 2 diameter is same or like with RPC layer steel bar stress diameter.
After the U-shaped reinforcing bar of the present invention and transverse steel, steel construction border welding fabrication, pouring RPC layer 1, after pouring construction completes, U-shaped reinforcing bar 2 and the stress transverse steel 7 welded therewith, steel construction 5 border is wrapped and is built among RPC.
U-shaped reinforcing bar 2 cross section of the present invention includes circle, ellipse, square, rectangle, strengthens the cohesive force between U-shaped reinforcing bar and RPC.
The U-shaped reinforcing bar 2 of the present invention may be configured as L-type, and the long edge lengths of its L-type is 50mm-160mm, and bond length is 20mm-80mm, is used for adapting to special construction or optimizing U-shaped reinforcing steel bar bear.
The long limit of L-type of the U-shaped reinforcing bar 2 of the present invention uses plane overlap welding to be connected with transverse steel 7, weld length 50mm-160mm, and is in same plane with transverse steel 7.
The L-type minor face of the U-shaped reinforcing bar 2 of the present invention welds with steel construction 5 border, and its welding position and transverse steel 7 are in same plane, weld length 50mm-80mm.
The L-type minor face of the U-shaped reinforcing bar 2 of the present invention welds with steel construction 5 border, and its welding position and transverse steel 7 plane are 10 ° ~ 90 ° angles, weld length 50mm-80mm.
RPC layer of the present invention is specific as follows with the construction method of the strengthening seam construction at steel structural layer interface: before pouring RPC layer 1, first lay U-shaped reinforcing bar 2, and the U-shaped base 21 of U-shaped reinforcing bar 2 is welded with the border of steel construction 5, the left limb 22 of U-shaped reinforcing bar 2 is connected and welds with the transverse steel 7 in RPC layer 1 with right limb 23 respectively, and allowing U-shaped reinforcing bar 2 become reactive powder concrete becomes a stress entirety with steel construction 5；Again the U-shaped base of U-shaped screw-thread steel is used two-sided welding with steel construction edge, and make U-shaped steel bar arrangement on the same plane of reactive powder concrete transverse steel 7；U-shaped reinforcing bar two limb and transverse steel 7 are used single-sided welding；After completing the welding of U-shaped reinforcement installation, pour RPC again, being wrapped on the border of U-shaped reinforcing bar 2, transverse steel 7 and steel construction 5 builds in RPC, make up in design after intensity until steam-cured or natural curing, three forms an entirety, make RPC layer border will not produce Interface Crack because of variation of ambient temperature with seam interface, steel construction border, thus reach to prevent harmful substance from invading the effect impacting the harm of steel construction durability from interface seam crossing.
The invention has the beneficial effects as follows: after the RPC layer of the present invention pours, covering curing membrane prevents the surface initial stage from ftractureing, it is steam-cured or time natural curing reaches design strength, RPC layer and steel construction are linked to be an entirety by U-shaped reinforcing bar, when variation of ambient temperature, strongly link together between RPC bed boundary with steel construction interface Tong Bu deformation because of it, interface will not produce crack, reaches to prevent harmful environmental material from invading from interface seam crossing and impacts the harm of steel construction durability.It is mainly used in the fields such as steel structure bridge.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 is the L-type structural representation of the present invention；
Fig. 4 is the L-type top view of the present invention.
In figure: 1-RPC layer, the U-shaped reinforcing bar of 2-, 3-longitudinal reinforcement, 5-steel construction, 7-transverse steel, 21-reinforcing bar base, the left limb of 22-U steel bar 2, the right limb of the U-shaped reinforcing bar of 23-2.
Detailed description of the invention
With embodiment, the present invention is described in further details below in conjunction with the accompanying drawings.
Embodiment 1, including RPC layer 1, U-shaped reinforcing bar 2, steel construction 5, RPC layer 1 is provided with longitudinal reinforcement 3 and transverse steel 7, before RPC layer 1 pours, the left limb 22 of U-shaped reinforcing bar 2 is connected and welds with the transverse steel 7 in RPC layer 1 with right limb 23 respectively, the reinforcing bar base 21 of U-shaped reinforcing bar 2 is connected with steel construction 5 border and welds, U-shaped reinforcing bar 2 connects RPC layer 1 becomes an entirety with steel construction 5, realize RPC layer 1 and do not produce crack with steel construction 5 border seam, prevent RPC internal and Steel Bridge Deck is caused structure durability to damage by harmful environmental material from the intrusion of interface seam crossing.Referring to figs. 1 to Fig. 4.
Embodiment 2, for optimizing U-shaped reinforcing steel bar bear state, more efficient performance material property, width between the two ends of the U-shaped reinforcing bar 2 of the present invention is 25-280mm, the left limb 22 of U-shaped reinforcing bar 2 and a length of 50mm-160mm of right limb 23, a diameter of 5mm-16mm of U-shaped reinforcing bar 2, adjacent two U-shaped reinforcing bar 2 spacing are 25mm-250mm.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 3, the U-shaped reinforcing bar of steel 2 of the present invention left limb 22 and right limb 23 use with the structure transverse steel 7 in RPC layer respectively plane overlap welding manner, fusion length is 50mm-160mm, and U-shaped reinforcing bar 2 is in same plane with transverse steel 7；U-shaped reinforcing bar one end is integrally forming after welding for steel structure, the other end is then integrally welded with transverse steel, organically steel construction and RPC layer being become a stress overall structure, the seam between RPC layer border and steel construction will not produce crack because of variations in temperature.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 4, employing two-sided full weld welding is welded on the U-shaped reinforcing bar reinforcing bar base 21 of the present invention with steel construction 5 border；U-shaped reinforcing bar 2 diameter is same or like with RPC layer steel bar stress diameter.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 5, after the U-shaped reinforcing bar of the present invention and transverse steel, steel construction border welding fabrication, pour RPC layer 1, after pouring construction completes, U-shaped reinforcing bar 2 and the stress transverse steel 7 welded therewith, steel construction 5 border bag is built among RPC.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 6, U-shaped reinforcing bar 2 cross section of the present invention includes circle, ellipse, square, rectangle, empty cast, strengthens the cohesive force between U-shaped reinforcing bar and RPC.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 7, the U-shaped reinforcing bar 2 of the present invention may be configured as L-type, and the long edge lengths of its L-type is 50mm-160mm, and bond length is 20mm-80mm, is used for adapting to special construction or optimizing U-shaped reinforcing steel bar bear.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 8, the long limit of L-type of the U-shaped reinforcing bar 2 of the present invention uses plane overlap welding to be connected with transverse steel 7, weld length 50mm-160mm, and is in same plane with transverse steel 7.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 9, the L-type minor face of the U-shaped reinforcing bar 2 of the present invention welds with steel construction 5 border, and its welding position and transverse steel 7 are in same plane, weld length 50mm-80mm.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 10, the L-type minor face of the U-shaped reinforcing bar 2 of the present invention welds with steel construction 5 border, and its welding position and transverse steel 7 plane are 10 ° ~ 90 ° angles, weld length 50mm-80mm.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 11, the present invention is before RPC layer 1 pours, lay U-shaped reinforcing bar 2, the U-shaped base 21 of U-shaped reinforcing bar 2 is welded with the border of steel construction 5, U-shaped reinforcing bar 2 left limb 22 be connected with right limb 23 with the transverse steel 7 in RPC layer 1 and weld, allowing U-shaped reinforcing bar 2 become reactive powder concrete and steel construction 5, to become a stress overall.Wherein, the left limb 22 of U-shaped reinforcing bar 2 opening and a length of 100mm of right limb 23, U-shaped reinforcing bar is directly middle 10mm, and the spacing of adjacent U-shaped reinforcing bar is 150mm, and U-shaped reinforcing bar is screw-thread steel.The U-shaped base of U-shaped screw-thread steel uses two-sided welding with steel construction edge, U-shaped steel bar arrangement is in the same level of reactive powder concrete transverse steel 7, U-shaped reinforcing bar two limb and transverse steel 7 single-sided welding, fusion length 100mm, after completing the welding of U-shaped reinforcement installation, pour RPC, by U-shaped reinforcing bar 2, transverse steel 7, steel construction 5 border bag is built in RPC, in steam-cured or natural curing reach design after intensity, three's shape is integral, RPC layer border will not produce Interface Crack because of variation of ambient temperature with seam interface, steel construction border, reach to prevent harmful substance from invading the effect impacting the harm of steel construction durability from interface seam crossing.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 12, the U-shaped reinforcing bar 2 of the present invention can transform to Φ 10 round steel.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 13, the U-shaped reinforcing bar 2 of the present invention can transform to 8 × 8 square steel.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 14, the U-shaped reinforcing bar 2 of the present invention can transform to 10 × 6 rectangular shaped steel.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 15, the U-shaped reinforcing bar 2 of the present invention can transform to φ 10mm external diameter × 2mm wall thickness steel tube.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 16, it is length of side 12mm triangle that the U-shaped reinforcing bar 2 of the present invention can transform to cross section.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 17, the U-shaped reinforcing bar 2 of the present invention uses φ 10 screw-thread steel, processes l-shaped, and the minor face of L-type and steel construction edge use two-sided welding, the long limit of L-type and transverse steel 7 single-sided welding, fusion length 100mm.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Embodiment 18, the U-shaped reinforcing bar 2 of the present invention uses φ 10 screw-thread steel, is processed into W type, use two-sided welding, the limb of W steel bar and transverse steel 7 single-sided welding with steel construction edge bottom a length of 120mm, the W steel bar of W limb, fusion length 100mm, other are same with embodiment 1.Referring to figs. 1 to Fig. 4, remaining same above-described embodiment.
Claims (10)
1. a RPC layer and the strengthening seam construction at steel structural layer interface, it is characterized in that: include RPC layer (1), U-shaped reinforcing bar (2) and steel construction (5), RPC layer (1) is provided with longitudinal reinforcement (3) and transverse steel (7), the left limb (22) of U-shaped reinforcing bar (2) is connected and welds with the transverse steel (7) in RPC layer (1) with right limb (23) respectively, the reinforcing bar base (21) of U-shaped reinforcing bar (2) is connected with steel construction (5) border and welds, U-shaped reinforcing bar (2) connects RPC layer (1) becomes an entirety with steel construction (5), realize RPC layer (1) and do not produce crack with steel construction (5) border seam.
A kind of RPC layer the most according to claim 1 and the strengthening seam construction at steel structural layer interface, it is characterized in that: the width between two limbs of described U-shaped reinforcing bar (2) is 25-280mm, the left limb (22) of U-shaped reinforcing bar (2) and right limb (23) a length of 50mm-160mm, a diameter of 5mm-16mm of U-shaped reinforcing bar (2), adjacent two U-shaped reinforcing bar (2) spacing are 25mm-250mm.
A kind of RPC layer the most according to claim 1 and the strengthening seam construction at steel structural layer interface, it is characterized in that: the U-shaped reinforcing bar of described steel (2) left limb (22) and right limb (23) respectively with in RPC layer structure transverse steel (7) use plane overlap joint welding manner, fusion length is 50mm-160mm, and U-shaped reinforcing bar (2) is in same plane with transverse steel (7).
A kind of RPC layer the most according to claim 1 and the strengthening seam construction at steel structural layer interface, is characterized in that: described U-shaped reinforcing bar reinforcing bar base (21) welds employing two-sided full weld welding with steel construction (5) border.
A kind of RPC layer the most according to claim 1 and the strengthening seam construction at steel structural layer interface, is characterized in that: described U-shaped reinforcing bar (2) and steel construction (5) border bag are built in RPC layer (1).
A kind of RPC layer the most according to claim 1 and the strengthening seam construction at steel structural layer interface, is characterized in that: described U-shaped reinforcing bar (2) cross section includes circle, ellipse, square, rectangle.
A kind of RPC layer the most according to claim 1 and the strengthening seam construction at steel structural layer interface, is characterized in that: described U-shaped reinforcing bar (2) may be configured as L-type, and the long edge lengths of its L-type is 50mm-160mm, and bond length is 20mm-80mm.
A kind of RPC layer the most according to claim 7 and the strengthening seam construction at steel structural layer interface, it is characterized in that: the long limit of L-type of U-shaped reinforcing bar (2) uses plane overlap welding to be connected with transverse steel (7), weld length 50mm-160mm, and it is in same plane with transverse steel (7).
A kind of RPC layer the most according to claim 7 and the strengthening seam construction at steel structural layer interface, it is characterized in that: the L-type minor face of U-shaped reinforcing bar (2) welds with steel construction (5) border, weld length 50mm-80mm, its welding position and transverse steel (7) are in same plane, or the plane of its welding position and transverse steel (7) is 10 ° ~ 90 ° angles.
10. the construction method of the strengthening seam construction at a RPC layer and steel structural layer interface, it is characterized in that: pouring, RPC layer (1) is front, first lay U-shaped reinforcing bar (2), and the U-shaped base (21) of U-shaped reinforcing bar (2) is welded with the border of steel construction (5), the left limb (22) of U-shaped reinforcing bar (2) is connected and welds with the transverse steel (7) in RPC layer (1) with right limb (23) respectively, and allowing U-shaped reinforcing bar (2) become reactive powder concrete becomes a stress entirety with steel construction (5)；Again the U-shaped base of U-shaped screw-thread steel is used two-sided welding with steel construction edge, and make U-shaped steel bar arrangement on the same plane of reactive powder concrete transverse steel (7)；U-shaped reinforcing bar two limb is used single-sided welding with transverse steel (7)；After completing the welding of U-shaped reinforcement installation, pour RPC again, being wrapped on the border of U-shaped reinforcing bar (2), transverse steel (7) and steel construction (5) builds in RPC, make up in design after intensity until steam-cured or natural curing, three forms an entirety, make RPC layer border will not produce Interface Crack because of variation of ambient temperature with seam interface, steel construction border, thus reach to prevent harmful substance from invading the effect impacting the harm of steel construction durability from interface seam crossing.
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| CN201610391786.3A CN105937203B (en) | 2016-06-06 | 2016-06-06 | A kind of RPC layer and the reinforcing seam construction and its construction method at steel structural layer interface |
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| CN201610391786.3A CN105937203B (en) | 2016-06-06 | 2016-06-06 | A kind of RPC layer and the reinforcing seam construction and its construction method at steel structural layer interface |
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