CN104404868A - Arch spring of through steel tube concrete tie bar arch - Google Patents
Arch spring of through steel tube concrete tie bar arch Download PDFInfo
- Publication number
- CN104404868A CN104404868A CN201410768805.0A CN201410768805A CN104404868A CN 104404868 A CN104404868 A CN 104404868A CN 201410768805 A CN201410768805 A CN 201410768805A CN 104404868 A CN104404868 A CN 104404868A
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- steel tube
- steel plate
- arch rib
- arch
- steel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an arch spring of a through steel tube concrete tie bar arch, and the arch spring comprises an arch spring concrete and a steel tube arch rib extended into the concrete, the bottom of the mentioned steel tube arch rib is fixedly provided with a bottom steel plate, and the cross section of the steel tube arch rib is arranged within the bottom steel plate end; by the arch spring, the axial force of the steel tube arch rib can be transferred to the arch spring concrete through a pressure-bearing steel plate, and the 'pressure' of the arch rib steel tube is converted into that of the arch spring concrete, thus the arch spring gives full play to the high compressive strength of the concrete, the stress of the structure is optimized, construction difficulties are also reduced, the construction quality is effectively improved and the arch spring concrete diseases are fundamentally solved.
Description
Technical field
The invention belongs to concrete filled steel tube arch springing technical field, particularly a kind of arch springing of lower support type concrete-filled steel tube tied arch.
Background technology
In conventional steel concrete arch springing, adopting directly inserts in arch springing concrete by steel pipe, utilize the frictional force between steel pipe and concrete, axle power powerful for arch rib is passed to arch springing concrete, because concrete property is that tensile strength is low, compressive strength is high, in the process transmitting arch rib axle power, " pressure " of arch rib is changed into concrete " pulling force ", the concrete contacted with steel tube arch rib assume responsibility for larger tensile stress, do not utilize the advantage that concrete compressive strength is large, make use of the shortcoming of concrete tensile strength difference on the contrary, this form arch springing causes the stressed complexity of arch springing concrete, because this stressed power transmission pattern causes traditional design to be provided with more oblique reinforcing bar to strengthen concrete resistance to tension, because concrete arch pin is natively provided with more plain bars, increase oblique reinforcing bar again, cause arch springing concreting difficulty large, construction quality is comparatively difficult to ensure card, by investigation, this type of arch bridge of 80%, all there is cracking disease in various degree in arch springing concrete, because arch springing is arch bridge the most concentrated stressed position, after there is disease, maintenance cost is higher, maintenance construction difficulty is larger, this also result in the not very willing reason recommending to adopt concrete-filled steel tubes arch bridge of Construction unit.
Summary of the invention
The object of the present invention is to provide and a kind ofly the axle power of steel tube arch rib can be passed to arch springing concrete by pressure-bearing steel plate, " pressure " of arch rib steel pipe is changed into arch springing concrete " pressure ", and the arch springing of the low lower support type concrete-filled steel tube tied arch of difficulty of construction.
The technical solution realizing the object of the invention is:
An arch springing for lower support type concrete-filled steel tube tied arch, comprise arch springing concrete and stretch into the steel tube arch rib in concrete, stretch into bottom the steel tube arch rib in concrete and be fixedly installed end steel plate, the cross section of steel tube arch rib is in the scope of end steel plate end face.
The present invention compared with prior art, its remarkable advantage:
(1) the present invention is by the setting of carrying steel plate, the axle power of steel tube arch rib can be passed to arch springing concrete by pressure-bearing steel plate, " pressure " of arch rib steel pipe changes arch springing concrete " pressure " into, has given full play to the advantage that concrete crushing strength is high, has optimized the stressed of structure.
(2) the present invention is relative to common concrete filled steel tube arch springing, and change is structurally little, without the need to the form of construction work adopting difficulty larger, and due to the optimization of structure, lower construction requirement can reach than construction effect good in the past, therefore, reduces the difficulty of construction.
(3) the present invention is provided with stiffener muscle between pressure-bearing steel plate and steel tube arch rib, and the structure of arch springing can be made more stable.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the arch springing of lower support type concrete-filled steel tube tied arch of the present invention.
Fig. 2 is I-I sectional view of Fig. 1.
Fig. 3 is II-II sectional view of Fig. 1.
Detailed description of the invention
Composition graphs 1 ~ Fig. 3:
An arch springing for lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, stretch into bottom the steel tube arch rib in concrete and be fixedly installed end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face.
One end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2.
The steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib 3 is fixedly installed end steel plate 1, the top of first paragraph steel tube arch rib 3 is fixed with the first top steel plate 4, the cross section of first paragraph steel tube arch rib 3 is pushed up in the scope of steel plate 4 end face at end steel plate 1 and first, first top steel plate 4 has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate 4 is fixedly installed the positioning steel tube 5 coaxial with its perforate, first top steel plate 4 is fixedly installed the second top steel plate 6, perforate on second top steel plate 6 is coaxial with the first perforate of pushing up on steel plate 4, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube 5 diameter, second segment steel tube arch rib 7 is fixedly installed on the second top steel plate 6, the cross section of second segment steel tube arch rib 7 is in the scope of the second top steel plate 6 end face, second segment steel tube arch rib 7 is identical and coaxial with first paragraph steel tube arch rib 3 diameter, wherein, end steel plate 1, first paragraph steel tube arch rib 3, first top steel plate 4, positioning steel tube 5, second top steel plate 6 and second segment steel tube arch rib 7 and second push up one end that steel plate 6 is connected and are all wrapped up by arch springing concrete 9.
End steel plate 1 and and its steel tube arch rib be fixedly installed between be fixedly installed stiffener muscle along the circumference of steel tube arch rib, wherein, stiffener muscle is wrapped up by arch springing concrete 9.
First top steel plate 4 and and its first paragraph steel tube arch rib 3 be fixedly installed between to arrange along the circumference of first paragraph steel tube arch rib 3 and be fixed with stiffener muscle; Second top steel plate 6 and and its second segment steel tube arch rib 7 be fixedly installed between be fixedly installed stiffener muscle along the circumference of second segment steel tube arch rib 7, wherein, stiffener muscle is wrapped up by arch springing concrete 9.
Be connected by welding between steel tube arch rib with end steel plate 1.
First paragraph steel tube arch rib 3 and end steel plate 1 and first push up between steel plate 4 and are connected by welding, and second segment steel tube arch rib 7 and second pushes up between steel plate 6 and is connected by welding, and the first top steel plate 4 and second is pushed up between steel plate 6 and is connected by bolt 10.
Embodiment 1:
An arch springing for lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, and the cross section of steel tube arch rib is in the scope of end steel plate 1 end face.
Embodiment 2:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, and one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2.
Embodiment 3:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, end steel plate 1 is axial vertical with the steel tube arch rib stretched in concrete, and one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2, wherein, the steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib 3 is fixedly installed end steel plate 1, the top of first paragraph steel tube arch rib 3 is fixed with the first top steel plate 4, the cross section of first paragraph steel tube arch rib 3 is pushed up in the scope of steel plate 4 end face at end steel plate 1 and first, first top steel plate 4 has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate 4 is fixedly installed the positioning steel tube 5 coaxial with its perforate, first top steel plate 4 is fixedly installed the second top steel plate 6, perforate on second top steel plate 6 is coaxial with the first perforate of pushing up on steel plate 4, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube 5 diameter, second segment steel tube arch rib 7 is fixedly installed on the second top steel plate 6, the cross section of second segment steel tube arch rib 7 is in the scope of the second top steel plate 6 end face, second segment steel tube arch rib 7 is identical and coaxial with first paragraph steel tube arch rib 3 diameter, wherein, end steel plate 1, first paragraph steel tube arch rib 3, first top steel plate 4, positioning steel tube 5, second top steel plate 6 and second segment steel tube arch rib 7 and second push up one end that steel plate 6 is connected and are all wrapped up by arch springing concrete 9.
Embodiment 4:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, end steel plate 1 and and its steel tube arch rib be fixedly installed between be welded with stiffener muscle along the circumference of steel tube arch rib, wherein, stiffener muscle is wrapped up by arch springing concrete 9.
Embodiment 5:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, end steel plate 1 is axial vertical with the steel tube arch rib stretched in concrete, one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2, end steel plate 1 and and its steel tube arch rib be fixedly installed between be fixedly welded with stiffener muscle along the circumference of steel tube arch rib, wherein, stiffener muscle is wrapped up by arch springing concrete 9.
Embodiment 6:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, and one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2, wherein, the steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib 3 is fixedly installed end steel plate 1, the top of first paragraph steel tube arch rib 3 is fixed with the first top steel plate 4, first paragraph steel tube arch rib 3 axially to push up steel plate 4 with end steel plate 1 and first respectively vertical, the cross section of first paragraph steel tube arch rib 3 is pushed up in the scope of steel plate 4 end face at end steel plate 1 and first, first top steel plate 4 has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate 4 is fixedly installed the positioning steel tube 5 coaxial with its perforate, first top steel plate 4 is fixedly installed the second top steel plate 6, perforate on second top steel plate 6 is coaxial with the first perforate of pushing up on steel plate 4, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube 5 diameter, second segment steel tube arch rib 7 is fixedly installed on the second top steel plate 6, the cross section of second segment steel tube arch rib 7 is in the scope of the second top steel plate 6 end face, it is vertical that the axis and second of second segment steel tube arch rib 7 pushes up steel plate 6, second segment steel tube arch rib 7 is identical and coaxial with first paragraph steel tube arch rib 3 diameter, wherein, end steel plate 1, first paragraph steel tube arch rib 3, first top steel plate 4, positioning steel tube 5, second top steel plate 6 and second segment steel tube arch rib 7 and second push up one end that steel plate 6 is connected and are all wrapped up by arch springing concrete 9.
Embodiment 7:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, and one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2, wherein, the steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib 3 is fixedly installed end steel plate 1, the top of first paragraph steel tube arch rib 3 is fixed with the first top steel plate 4, first paragraph steel tube arch rib 3 axially to push up steel plate 4 with end steel plate 1 and first respectively vertical, the cross section of first paragraph steel tube arch rib 3 is pushed up in the scope of steel plate 4 end face at end steel plate 1 and first, first top steel plate 4 has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate 4 is fixedly installed the positioning steel tube 5 coaxial with its perforate, first top steel plate 4 is fixedly installed the second top steel plate 6, perforate on second top steel plate 6 is coaxial with the first perforate of pushing up on steel plate 4, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube 5 diameter, second segment steel tube arch rib 7 is fixedly installed on the second top steel plate 6, the cross section of second segment steel tube arch rib 7 is in the scope of the second top steel plate 6 end face, it is vertical that the axis and second of second segment steel tube arch rib 7 pushes up steel plate 6, second segment steel tube arch rib 7 is identical and coaxial with first paragraph steel tube arch rib 3 diameter, first top steel plate 4 and and its first paragraph steel tube arch rib 3 be fixedly installed between to arrange along the circumference of first paragraph steel tube arch rib 3 and be fixed with stiffener muscle, second top steel plate 6 and and its second segment steel tube arch rib 7 be fixedly installed between be fixedly installed stiffener muscle along the circumference of second segment steel tube arch rib 7, wherein, end steel plate 1, first paragraph steel tube arch rib 3, first push up steel plate 4, positioning steel tube 5, second pushes up steel plate 6, stiffener muscle and second segment steel tube arch rib 7 and second and push up one end that steel plate 6 is connected and all wrapped up by arch springing concrete 9.
Embodiment 8:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, and one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2; Wherein,
The steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib 3 is fixedly installed end steel plate 1, the top of first paragraph steel tube arch rib 3 is fixed with the first top steel plate 4, first paragraph steel tube arch rib 3 axially to push up steel plate 4 with end steel plate 1 and first respectively vertical, the cross section of first paragraph steel tube arch rib 3 is pushed up in the scope of steel plate 4 end face at end steel plate 1 and first, first top steel plate 4 has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate 4 is fixedly installed the positioning steel tube 5 coaxial with its perforate, first top steel plate 4 is fixedly installed the second top steel plate 6, perforate on second top steel plate 6 is coaxial with the first perforate of pushing up on steel plate 4, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube 5 diameter, second segment steel tube arch rib 7 is fixedly installed on the second top steel plate 6, the cross section of second segment steel tube arch rib 7 is in the scope of the second top steel plate 6 end face, it is vertical that the axis and second of second segment steel tube arch rib 7 pushes up steel plate 6, second segment steel tube arch rib 7 is identical and coaxial with first paragraph steel tube arch rib 3 diameter, first paragraph steel tube arch rib 3 and end steel plate 1 and first push up between steel plate 4 and are connected by welding, and second segment steel tube arch rib 7 and second pushes up between steel plate 6 and is connected by welding, and the first top steel plate 4 and second is pushed up between steel plate 6 and is connected by bolt 10, wherein, end steel plate 1, first paragraph steel tube arch rib 3, first pushes up steel plate 4, positioning steel tube 5, second pushes up steel plate 6 and second segment steel tube arch rib 7 and second pushes up one end that steel plate 6 is connected and all wrapped up by arch springing concrete 9.
Embodiment 9:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, end steel plate 1 is axial vertical with the steel tube arch rib stretched in concrete, end steel plate 1 and and its steel tube arch rib be fixedly installed between be welded with stiffener muscle along the circumference of steel tube arch rib; Be connected by welding between steel tube arch rib with end steel plate 1; Wherein, stiffener muscle is wrapped up by arch springing concrete 9.
Embodiment 10:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2, end steel plate 1 and and its steel tube arch rib be fixedly installed between be fixedly welded with stiffener muscle along the circumference of steel tube arch rib; Be connected by welding between steel tube arch rib with end steel plate 1; Wherein, stiffener muscle is wrapped up by arch springing concrete 9.
Embodiment 11:
A kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, and one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2, wherein, the steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib 3 is fixedly installed end steel plate 1, the top of first paragraph steel tube arch rib 3 is fixed with the first top steel plate 4, first paragraph steel tube arch rib 3 axially to push up steel plate 4 with end steel plate 1 and first respectively vertical, the cross section of first paragraph steel tube arch rib 3 is pushed up in the scope of steel plate 4 end face at end steel plate 1 and first, first top steel plate 4 has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate 4 is fixedly installed the positioning steel tube 5 coaxial with its perforate, first top steel plate 4 is fixedly installed the second top steel plate 6, perforate on second top steel plate 6 is coaxial with the first perforate of pushing up on steel plate 4, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube 5 diameter, second segment steel tube arch rib 7 is fixedly installed on the second top steel plate 6, the cross section of second segment steel tube arch rib 7 is in the scope of the second top steel plate 6 end face, it is vertical that the axis and second of second segment steel tube arch rib 7 pushes up steel plate 6, second segment steel tube arch rib 7 is identical and coaxial with first paragraph steel tube arch rib 3 diameter, end steel plate 1 and and its steel tube arch rib be fixedly installed between be fixedly installed stiffener muscle along the circumference of steel tube arch rib, first paragraph steel tube arch rib 3 and end steel plate 1 and first push up between steel plate 4 and are connected by welding, second segment steel tube arch rib 7 and second pushes up between steel plate 6 and is connected by welding, and the first top steel plate 4 and second is pushed up between steel plate 6 and is connected by bolt 10, wherein, end steel plate 1, first paragraph steel tube arch rib 3, first push up steel plate 4, positioning steel tube 5, second pushes up steel plate 6, stiffener muscle and second segment steel tube arch rib 7 and second and push up one end that steel plate 6 is connected and all wrapped up by arch springing concrete 9.
Embodiment 12:
Composition graphs 1 ~ Fig. 3, a kind of arch springing of lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete 9 and stretch in concrete, the steel tube arch rib bottom welding stretched in concrete is fixed with end steel plate 1, the cross section of steel tube arch rib is in the scope of end steel plate 1 end face, and one end that end steel plate 1 is relative with steel tube arch rib is provided with steel mesh reinforcement 2, wherein, the steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib 3 is fixedly installed end steel plate 1, the top of first paragraph steel tube arch rib 3 is fixed with the first top steel plate 4, first paragraph steel tube arch rib 3 axially to push up steel plate 4 with end steel plate 1 and first respectively vertical, the cross section of first paragraph steel tube arch rib 3 is pushed up in the scope of steel plate 4 end face at end steel plate 1 and first, first top steel plate 4 has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate 4 is fixedly installed the positioning steel tube 5 coaxial with its perforate, first top steel plate 4 is fixedly installed the second top steel plate 6, perforate on second top steel plate 6 is coaxial with the first perforate of pushing up on steel plate 4, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube 5 diameter, second segment steel tube arch rib 7 is fixedly installed on the second top steel plate 6, the cross section of second segment steel tube arch rib 7 is in the scope of the second top steel plate 6 end face, it is vertical that the axis and second of second segment steel tube arch rib 7 pushes up steel plate 6, second segment steel tube arch rib 7 is identical and coaxial with first paragraph steel tube arch rib 3 diameter, first top steel plate 4 and and its first paragraph steel tube arch rib 3 be fixedly installed between be fixedly installed stiffener muscle along the circumference of first paragraph steel tube arch rib 3, second top steel plate 6 and and its second segment steel tube arch rib 7 be fixedly installed between be fixedly installed stiffener muscle along the circumference of second segment steel tube arch rib 7, first paragraph steel tube arch rib 3 and end steel plate 1 and first push up between steel plate 4 and are connected by welding, and second segment steel tube arch rib 7 and second pushes up between steel plate 6 and is connected by welding, and the first top steel plate 4 and second is pushed up between steel plate 6 and is connected by bolt 10, wherein, end steel plate 1, first paragraph steel tube arch rib 3, first push up steel plate 4, positioning steel tube 5, second pushes up steel plate 6, stiffener muscle and second segment steel tube arch rib 7 and second and push up one end that steel plate 6 is connected and all wrapped up by arch springing concrete 9.
Work progress:
Step one: the making carrying out arch springing steel lagging jack in factory: (1) end steel plate 1 and the first steel tube arch rib 3 adopt and be welded to connect, and arrange stiffener muscle in surrounding; (2) first top steel plates 4 and the first steel tube arch rib 3 adopt and are welded to connect, and arrange stiffener muscle in surrounding; (3) positioning steel tube 5 vertical welding is on the first top steel plate 4, pushes up and opens coaxial on steel plate 4, facilitate the lifting of second segment steel tube arch rib 6 to locate with first; All weld seams all adopt first-order weld standard.(4) the pre-buried installation of high-strength bolt;
Step 2: the colligation carrying out arch springing steel mesh reinforcement at the scene, steel mesh reinforcement 2 is installed into arch springing, again the first steel tube arch rib 3 assembled and the first top steel plate 4, end steel plate 1, positioning steel tube 5 are lifted into arch springing in the lump, by stiff skeleton and location and installation in arch springing, and by pre-buried for high-strength bolt in arch springing, bolt 10 needs vertical and steel plate is pre-buried;
Step 3:
Build arch springing concrete 9, and simultaneously concrete perfusion from the hole of positioning steel tube 5, be filled into the position of the first top steel plate 4;
Step 4:
Carry out in factory the connection that second segment steel tube arch rib 7, second pushes up steel plate 6 and stiffener muscle, second segment steel tube arch rib 7 is vertically welded on the second top steel plate 6; After having welded, equidistantly weld stiffener muscle at second segment steel tube arch rib 7 periphery, strengthen the switching performance that second segment steel tube arch rib 7 and second pushes up steel plate 6, all weld seams all adopt first-order weld standard;
Step 5:
After arch springing concrete 9 maintenance reaches designing requirement, adopt crane lifting second segment steel tube arch rib 7 to arch springing, utilize high-strength bolt to be connected with the second top steel plate 6 first top steel plate 4;
Step 6:
Carry out the installation of follow-up steel tube arch rib, after steel tube arch rib closes up, the end of to the sequence filling steel tube arch rib inner concrete on top;
Step 7:
After arch rib inner concrete reaches designing requirement, adopt mold method to build the section of watering 8 after arch springing concrete, built rear maintenance after 7 days, stripping, complete arch springing construction.
The concrete parameters of corresponding construction of the present invention:
1, the bottom of first paragraph steel tube arch rib 3 is provided with the end steel plate 1 of pressure-bearing effect, and the thickness of end steel plate 1 specifically refers to as following table from 2cm-10cm scope value according to different arch rib axle power:
| Arch rib axle power (kN) | Steel plate thickness (cm) |
| 1000～3000 | 2～4 |
| 3001～8000 | 4～6 |
| 8001～15000 | 6～8 |
| More than 15000 | 8-10 |
For the axle power of intermediate value in table, linear interpolation can be adopted to calculate steel plate thickness;
2, the profile of end steel plate 1 can adopt rectangle also can adopt polygon or ellipse, and its appearance and size will be wrapped in arch springing concrete 9, and larger than the appearance and size of first paragraph steel tube arch rib 3, and Edge Distance arch rib Edge Distance is not less than 5cm.
3, the steel mesh reinforcement 2 that diffusion-induced stress is set below of end steel plate 1, according to different axle power sizes, the diameter of steel mesh reinforcement 2 is 8mm or 10mm, and the sheet number of steel mesh reinforcement 2 from 4 ~ 10 not etc., is specifically taken from following table according to axle power:
| Arch rib axle power (kN) | The steel mesh reinforcement number of plies (sheet) |
| 1000～3000 | 4 |
| 3001～8000 | 6 |
| 8001～15000 | 8 |
| More than 15000 | 10 |
4, stiffener muscle is provided with between end steel plate 1 and first paragraph steel tube arch rib 3 to strengthen switching performance;
5, the first top steel plate 4 is welded to connect with first paragraph steel tube arch rib 3, first top steel plate 4 from thickness according to different arch rib axle power from 2cm-10cm scope value, and and stiffener muscle is set between first paragraph steel tube arch rib 3 to strengthen switching performance, concrete steel plate thickness is taken according to following table:
| Arch rib axle power (kN) | Steel plate thickness (cm) |
| 1000～3000 | 2～4 |
| 3001～8000 | 4～6 |
| 8001～15000 | 6～8 |
| More than 15000 | 8-10 |
6, the first top steel plate 4 intermediate demand perforate, aperture is less than the aperture of first paragraph steel tube arch rib 3, at the positioning steel tube 5 that the first top steel plate 4 perforate peripheral solder is prefabricated, location when constructing for second segment steel tube arch rib 7, positioning steel tube 5 and first pushes up between steel plate 4 by being welded to connect.
7, the second top steel plate 6 and first is pushed up between steel plate 4 and is connected by high-strength bolt, second pushes up steel plate 6 thickness according to the different value of arch rib axle power from 2cm-10cm, by being welded to connect between second top steel plate 6 and second segment steel tube arch rib 7, and add stiffener muscle is set to strengthen switching performance, concrete steel plate thickness is taken according to following table:
| Arch rib axle power (kN) | Steel plate thickness (cm) |
| 1000～3000 | 2～4 |
| 3001～8000 | 4～6 |
| 8001～15000 | 6～8 |
| More than 15000 | 8-10 |
8, the second top steel plate 6 intermediate demand perforate, aperture is larger than the aperture of the first top steel plate 4, and less than the aperture of second segment steel tube arch rib 7, and guarantees that prefabricated positioning steel tube 5 can pierce into.
9, the first top steel plate 4 and the second top steel plate 6 need reserved High-strength bolt hole, and the preformed hole position consistency of two steel plates.
10, the profile of the first top steel plate 4 and the second top steel plate 6 can adopt rectangle also can adopt polygon or ellipse, its appearance and size is less than arch springing concrete 9 appearance and size, and larger than the appearance and size of first paragraph steel tube arch rib 3 and second segment steel tube arch rib 7, Edge Distance arch rib Edge Distance is not less than 5cm.
Claims (9)
1. the arch springing of a lower support type concrete-filled steel tube tied arch, the steel tube arch rib comprising arch springing concrete (9) and stretch in concrete, it is characterized in that: stretch into bottom the steel tube arch rib in concrete and be fixedly installed end steel plate (1), the cross section of steel tube arch rib is in the scope of end steel plate (1) end face.
2. the arch springing of lower support type concrete-filled steel tube tied arch according to claim 1, is characterized in that: one end that described end steel plate (1) is relative with steel tube arch rib is provided with steel mesh reinforcement (2).
3. the arch springing of lower support type concrete-filled steel tube tied arch according to claim 1 and 2, it is characterized in that: the described steel tube arch rib stretched in concrete is divided into two sections, the bottom of first paragraph steel tube arch rib (3) is fixedly installed end steel plate (1), the top of first paragraph steel tube arch rib (3) is fixed with the first top steel plate (4), the cross section of first paragraph steel tube arch rib (3) is pushed up in the scope of steel plate (4) end face at end steel plate (1) and first, first top steel plate (4) has the hole coaxial with steel tube arch rib, aperture is less than steel tube arch rib diameter, first top steel plate (4) is fixedly installed the positioning steel tube (5) coaxial with its perforate, first top steel plate (4) is fixedly installed the second top steel plate (6), the perforate that perforate and first on second top steel plate (6) is pushed up on steel plate (4) is coaxial, aperture is less than steel tube arch rib diameter and is greater than positioning steel tube (5) diameter, second segment steel tube arch rib (7) is fixedly installed on the second top steel plate (6), the cross section of second segment steel tube arch rib (7) is in the scope of the second top steel plate (6) end face, second segment steel tube arch rib (7) is identical and coaxial with first paragraph steel tube arch rib (3) diameter, wherein, end steel plate (1), first paragraph steel tube arch rib (3), first top steel plate (4), positioning steel tube (5), second top steel plate (6) and second segment steel tube arch rib (7) and second push up one end that steel plate (6) is connected and are all wrapped up by arch springing concrete (9).
4. the arch springing of lower support type concrete-filled steel tube tied arch according to claim 1 and 2, it is characterized in that: described end steel plate (1) and and its steel tube arch rib be fixedly installed between be fixedly installed stiffener muscle along the circumference of steel tube arch rib, wherein, stiffener muscle is wrapped up by arch springing concrete (9).
5. the arch springing of lower support type concrete-filled steel tube tied arch according to claim 3, it is characterized in that: described end steel plate (1) and and its steel tube arch rib be fixedly installed between be fixedly installed stiffener muscle along the circumference of steel tube arch rib, wherein, stiffener muscle is wrapped up by arch springing concrete (9).
6. the arch springing of lower support type concrete-filled steel tube tied arch according to claim 3, is characterized in that: described first top steel plate (4) and and its first paragraph steel tube arch rib (3) be fixedly installed between to arrange along the circumference of first paragraph steel tube arch rib (3) and be fixed with stiffener muscle; Second top steel plate (6) and and its second segment steel tube arch rib (7) be fixedly installed between be fixedly installed stiffener muscle along the circumference of second segment steel tube arch rib (7), wherein, stiffener muscle is wrapped up by arch springing concrete (9).
7. the arch springing of lower support type concrete-filled steel tube tied arch according to claim 3, it is characterized in that: described first paragraph steel tube arch rib (3) and end steel plate (1) and first push up between steel plate (4) and be connected by welding, second segment steel tube arch rib (7) and second pushes up between steel plate (6) and is connected by welding, and the first top steel plate (4) and second is pushed up between steel plate (6) and is connected by bolt (10).
8. the arch springing of lower support type concrete-filled steel tube tied arch according to claim 4, is characterized in that: be connected by welding between described steel tube arch rib with end steel plate (1).
9. the arch springing of the lower support type concrete-filled steel tube tied arch according to claim 5 or 6, it is characterized in that: described first paragraph steel tube arch rib (3) and end steel plate (1) and first push up between steel plate (4) and be connected by welding, second segment steel tube arch rib (7) and second pushes up between steel plate (6) and is connected by welding, and the first top steel plate (4) and second is pushed up between steel plate (6) and is connected by bolt (10).
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| CN201410768805.0A CN104404868A (en) | 2014-12-12 | 2014-12-12 | Arch spring of through steel tube concrete tie bar arch |
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| CN201410768805.0A CN104404868A (en) | 2014-12-12 | 2014-12-12 | Arch spring of through steel tube concrete tie bar arch |
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