CN105648898A - Prefabricated ultra-high-performance concrete half-through beam units, bridge beam structure and construction method - Google Patents
Prefabricated ultra-high-performance concrete half-through beam units, bridge beam structure and construction method Download PDFInfo
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- CN105648898A CN105648898A CN201610070637.7A CN201610070637A CN105648898A CN 105648898 A CN105648898 A CN 105648898A CN 201610070637 A CN201610070637 A CN 201610070637A CN 105648898 A CN105648898 A CN 105648898A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- 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
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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Abstract
The invention discloses prefabricated ultra-high-performance concrete half-through beam units, a bridge beam structure and a construction method. Each half-through beam unit is mainly prefabricated by ultra-high-performance concrete main beams, ultra-high-performance concrete transverse partition plates and an ultra-high-performance concrete bridge deck slab. The transverse partition plates are longitudinally and uniformly distributed on the lower portion of the bridge deck slab along a bridge beam. The bridge deck slabs are supported by the main beams and the transverse partition plates jointly. One side of each half-through beam unit is provided with a connecting part for being spliced with the adjacent half-through beam unit. The half-through beam units can be combined into a double-spliced half-through beam unit after being spliced in the transverse direction of the bridge beam. By arranging ultra-high-performance concrete cast-in-situ joints on the connecting parts, the multiple half-through beam units are capable of forming the half-through bridge beam structure after being spliced in the longitudinal direction of the bridge beam. During constructing, the ultra-high-performance concrete half-through beam units are prefabricated at first; then, on-site lifting is conducted, the joints are casted on site, and the ultra-high-performance concrete half-through beam units are sequentially spliced to form a half-through bridge beam structure main body; and finally, construction of an auxiliary project is completed. The prefabricated ultra-high-performance concrete half-through beam units have the remarkable advantages of being light in self weight, good in durability, capable of effectively decreasing the height of a beam body building and the like.
Description
Technical field
The present invention relates to a kind of bridge member, bridge body construction and construction thereof, particularly relate to a kind of prefabricated ultra-high performance concrete (UHPC) beam element, bridge structure and construction method thereof.
Background technology
Precast prestressed concrete beam has the advantages such as simple in construction, stress is clear and definite, cheap, erection is convenient, bridge structure obtains a degree of application, but owing to common concrete material tensile strength is low, shrinkage and creep is big, under vehicular load long term, beam body easily produces crack, water permeating of bridge floor corrodes girder, and durability is had a greatly reduced quality.
For common prefabricated concrete bridge form, when upper cross a river stream, highway, by navigation, be open to traffic the restriction to under-clearance and end of the bridge elevation, generally require reduction bridge structure building height, the reduction of normal concrete structural bridge building height then means to reduce girder or web height, and this is unsafe for bridge structure. Therefore, how while reducing bridge height, also ensureing safety and the durability of bridge structure, this is always up the technical barrier that those skilled in the art face for a long time. Although existing document has been presented for some solutions, but all there is structure complexity, cost height, constructional difficulties or bridge height and reduce the various defects such as limited extent.
Summary of the invention
The technical problem to be solved is, overcome the deficiency and defect mentioned in background above technology, make full use of the advantage that UHPC comprcssive strength is high, there is provided that a kind of deadweight is relatively light, good endurance, can effectively reduce the prefabricated ultra-high performance concrete half-through beam element of beam body building height, and the half-through bridge girder construction being made up of this prefabricated ultra-high performance concrete half-through beam element, correspondingly provide that a kind of technique is simple, easy to operate, speed of application fast, the construction method of the prefabricated ultra-high performance concrete half-through bridge girder construction of good economy performance.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes is a kind of prefabricated ultra-high performance concrete half-through beam element that can be applicable in bridge structure, and described prefabricated ultra-high performance concrete half-through beam element is mainly by ultra-high performance concrete girder, ultra-high performance concrete diaphragm plate with ultra-high performance concrete floorings are integral prefabricated forms;Described ultra-high performance concrete girder is arranged on ultra-high performance concrete floorings both sides and affixed with it, and the ultra-high performance concrete girder being positioned at both sides is parallel to each other; Described ultra-high performance concrete diaphragm plate is longitudinally uniformly laid in below ultra-high performance concrete floorings along bridge, and it is affixed with the ultra-high performance concrete girder of ultra-high performance concrete floorings and both sides, described ultra-high performance concrete floorings are supported jointly by ultra-high performance concrete girder and ultra-high performance concrete diaphragm plate, and described prefabricated ultra-high performance concrete half-through beam element is set to along the one or both sides that bridge is longitudinal carry out, with contiguous prefabricated ultra-high performance concrete half-through beam element, the connecting portion that splices.
Above-mentioned prefabricated ultra-high performance concrete half-through beam element, it is preferred that: described ultra-high performance concrete floorings adopt bottom with the slim plate of longitudinal rib, and described longitudinal rib is evenly distributed on the bottom surface of ultra-high performance concrete floorings along bridge lateral.
Above-mentioned prefabricated ultra-high performance concrete half-through beam element, preferred: the end face width of described longitudinal rib is more than its bottom width, and the width of longitudinal rib is diminished by end face to bottom surface is gradual. It is furthermore preferred that the cross section of described longitudinal rib is an inverted trapezoidal shape. The end face width of described longitudinal rib is 0.12m��0.20m, and described longitudinal rib bottom width is 0.10m��0.18m, and the spacing of adjacent two longitudinal rib is 0.45m��1.50m. So preferred size design scheme can give full play to ultra-high performance concrete intensity height, non-coarse aggregate, easily closely knit technical advantage, alleviates the deadweight of ultra-high performance concrete floorings.
Above-mentioned prefabricated ultra-high performance concrete half-through beam element, preferred: the plate gross thickness (including longitudinal rib) of described ultra-high performance concrete floorings is 0.18m��0.25m, wherein, the thickness of the panel body (4) being fixed in described longitudinal rib (3) top is 0.05m��0.10m.
Above-mentioned prefabricated ultra-high performance concrete half-through beam element, preferred: described ultra-high performance concrete girder adopts the inverted T-shaped structure that bottom is widened, size 0.60m��2.0m is widened in the bottom of described ultra-high performance concrete girder, the thickness of described ultra-high performance concrete girder is 0.20m��0.30m, and the overall height of described ultra-high performance concrete girder is that prefabricated ultra-high performance concrete half-through beam element is across the 1/18��1/30 of footpath.
According to above-mentioned preferred size design scheme, can meeting the requirement of ultra-high performance concrete girder strength and stiffness, beam body deadweight simultaneously is only about the half of conventional concrete beam deadweight.
Conceive as a total technology, the present invention also provides for a kind of prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element that can be applicable in bridge structure, described Two bors d's oeuveres half-through beam element is spliced along bridge lateral by above-mentioned prefabricated ultra-high performance concrete half-through beam element, and both of the aforesaid prefabricated ultra-high performance concrete half-through beam element be by its each side ultra-high performance concrete girder affixed side by side and shape is integral.
Conceive as a total technology, the present invention also provides for a kind of prefabricated ultra-high performance concrete half-through bridge girder construction, described half-through bridge girder construction is to be formed along bridge is longitudinal spliced by above-mentioned prefabricated ultra-high performance concrete half-through beam element or prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element, adjacent two half-through beam elements are that the portion of being connected through connects, and described connecting portion is provided with the cast-in-place seam of ultra-high performance concrete.
In above-mentioned prefabricated ultra-high performance concrete half-through bridge girder construction, preferred: described ultra-high performance concrete diaphragm plate is along bridge longitudinally intensive layout, its spacing is 2.5m��5.0m, thickness is 0.1m��0.2m, is highly the 1/5��1/15 of ultra-high performance concrete girder spacing (i.e. bridge lateral width).In the present invention, the setting of ultra-high performance concrete diaphragm plate can ensure that half-through bridge girder construction has enough torsional rigidities, and can be directly pre-formed in early stage, convenient construction.
The prefabricated ultra-high performance concrete half-through beam element of the invention described above and the half-through bridge girder construction of composition thereof, owing to have employed ultra-high performance concrete as structural material, and coordinated rational connection to arrange, girder web plate thickness and the floorings average thickness making half-through beam element reduces (panel thickness is only the 1/3��1/2 of tradition precast concrete beam), ultra-high performance concrete girder is without adopting variable cross-section simultaneously, pre-stress system, only need a small amount of distributing bar, this overall depth of section of prefabricated ultra-high performance concrete half-through bridge girder construction making the present invention and width are keeping under suitable premise with tradition precast concrete beam design load, the gravity energy of whole beam body is greatly reduced, compare with common Medium Span type of bridge, can effectively reduce constructionheightofbridge (constructionheightofbridge is only about the 1/2 of tradition precast concrete beam).
Conceiving as a total technology, the present invention also provides for the construction method of a kind of above-mentioned prefabricated ultra-high performance concrete half-through bridge girder construction, comprises the following steps:
A () is according to the structure of described prefabricated ultra-high performance concrete half-through beam element, at the integral prefabricated described ultra-high performance concrete girder of factory, ultra-high performance concrete diaphragm plate and ultra-high performance concrete floorings, form independent prefabricated ultra-high performance concrete half-through beam element;
B (), after ultra-high performance concrete girder reaches design strength, carries out on-site hoisting; After lifting puts in place, by arranging the cast-in-place seam of ultra-high performance concrete at the connecting portion of adjacent two prefabricated ultra-high performance concrete half-through beam elements, described prefabricated ultra-high performance concrete half-through beam element is longitudinally spliced to form half-through bridge girder construction main body successively along bridge;
C () finally completes the construction of appurtenant work and deck paving.
Above-mentioned construction method, it is preferred that: the construction of described half-through bridge girder construction is the bridge construction work progress being applied to simply supported girder bridge or continuous bridge; The beam section longitudinal length of described half-through bridge girder construction is equal to bridge single span span length degree, and described bridge single span is 20m��60m across footpath, and described constructionheightofbridge is that bridge single span is across the 1/35��1/50 of footpath. Technical scheme is particularly suitable for simply supported girder bridge or continuous bridge, the construction technology ripe by this kind of bridge type and equipment combine with the present invention, can better ensuring that feasibility and the efficiency of construction of bridge structure of the present invention and construction thereof, the above-mentioned technical scheme of connected applications will produce more significantly technique effect and technical advantage.
Above-mentioned construction method, it is preferred that: the ultra-high performance concrete material that described prefabricated ultra-high performance concrete half-through beam element uses is the ultra-high performance concrete of more than bending and tensile strength 20MPa, comprcssive strength more than 120MPa.
Compared with prior art, it is an advantage of the current invention that:
First, prefabricated ultra-high performance concrete half-through beam element provided by the invention and bridge structure have employed new material ultra-high performance concrete, comprcssive strength may be up to more than 120MPa, it can realize the lightness of girder, not only can alleviate the weight of substructure, improve the span ability of bridge, and make prefabricated, assembled, the transport of structure be more prone to;
Second, the present invention greatly reduces constructionheightofbridge compared to tradition Medium Span beams of concrete, can make mutilevel overpass that overall height is greatly lowered, shorten access bridge or length of leading the way, the quantities that reduces, account for soil less, remove engineering less, thus huge economic benefit and environmental benefit can be obtained;Further, since the gradient diminishes, vehicle climbing amount is little, it is also possible to reduce running cost;
3rd, the present invention can effectively reduce the cracking risk of tradition precast concrete beam; Owing to the bending and tensile strength of ultra-high performance concrete is up to more than 20MPa, and the later stage after high-temperature steam curing shrinks substantially zeroed, and the later stage creeps also only small, and this makes the present invention have enough guarantees in taking precautions against prefabricated beam body cracking;
4th, the present invention adopts ultra-high performance concrete girder and floorings are integral prefabricated, the form of construction work of integral hoisting, is not only convenient for constructing, and enhances the durability of bridge structure, facilitates the later maintenance of bridge.
On the whole, the present invention has from heavy and light, good endurance, reduction beam body cracking risk, the significant advantages such as constructionheightofbridge is greatly lowered, and has good commercial application prospect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the elevation of prefabricated ultra-high performance concrete half-through bridge girder construction in the embodiment of the present invention.
Fig. 2 is the sectional view at A-A place in Fig. 1.
Fig. 3 is the sectional view at B-B place in Fig. 1.
Fig. 4 is the cross sectional representation of prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element in the present invention.
Fig. 5 is the partial enlarged drawing at C place in Fig. 3.
Marginal data:
1, ultra-high performance concrete floorings; 2, wearing course; 3, longitudinal rib; 4, panel body; 5, ultra-high performance concrete girder; 6, ultra-high performance concrete end diaphragm plate; 7, ultra-high performance concrete diaphragm plate; 8, guardrail; 9, the cast-in-place seam of ultra-high performance concrete.
Detailed description of the invention
For the ease of understanding the present invention, below in conjunction with Figure of description and preferred embodiment, the present invention is made more comprehensively, describes meticulously, but protection scope of the present invention is not limited to embodiment in detail below.
It should be noted that, when a certain element is described as on " be fixed on, be fixed in, be connected to or be communicated in " another element, it can be directly fixing, affixed, connect or connection is on another element, it is also possible to be by fixing, affixed, the connection indirectly of other intermediate connectors or connect on another element.
Unless otherwise defined, the implication that all technical term used hereinafter is generally understood that with those skilled in the art is identical. Technical term used herein is intended merely to the purpose describing specific embodiment, is not intended to limit the scope of the invention.
Unless otherwise specified, the various raw materials used in the present invention, reagent, instrument and equipment etc. all can be commercially available by market or can be prepared by existing method.
Embodiment 1:
A kind of as shown in Figure 1, Figure 2, the prefabricated ultra-high performance concrete half-through beam element that can be applicable in bridge structure shown in Fig. 3, this prefabricated ultra-high performance concrete half-through beam element is mainly by ultra-high performance concrete girder 5, ultra-high performance concrete diaphragm plate 7 with ultra-high performance concrete floorings 1 are integral prefabricated forms; Ultra-high performance concrete girder 5 is arranged on ultra-high performance concrete floorings 1 both sides and affixed with it, and the ultra-high performance concrete girder 5 being positioned at both sides is longitudinally parallel to each other along bridge.Ultra-high performance concrete diaphragm plate 7 is longitudinally uniformly laid in below ultra-high performance concrete floorings 1 along bridge, and it is affixed with the ultra-high performance concrete girder 5 of ultra-high performance concrete floorings 1 and both sides, ultra-high performance concrete floorings 1 are supported jointly by ultra-high performance concrete girder 5 and ultra-high performance concrete diaphragm plate 7, and prefabricated ultra-high performance concrete half-through beam element is set to along the one or both sides that bridge is longitudinal carry out, with contiguous prefabricated ultra-high performance concrete half-through beam element, the connecting portion that splices.
As it is shown in figure 5, in the prefabricated ultra-high performance concrete half-through beam element of the present embodiment, ultra-high performance concrete floorings 1 adopt bottom with the slim plate of longitudinal rib 3, and longitudinal rib 3 is evenly distributed on the bottom surface of ultra-high performance concrete floorings 1 along bridge lateral. The end face width of longitudinal rib 3 is more than its bottom width, and the width of longitudinal rib 3 is diminished by end face to bottom surface is gradual. The cross section of the longitudinal rib 3 in the present embodiment is an inverted trapezoidal shape; The end face width of longitudinal rib 3 is 0.20m, and the height of longitudinal rib 3 is 0.11m, and the bottom width of longitudinal rib 3 is 0.18m, and the spacing of adjacent two longitudinal rib 3 is 0.7m. In the prefabricated ultra-high performance concrete half-through beam element of the present embodiment, the plate gross thickness of ultra-high performance concrete floorings 1 is 0.18m, and wherein, the thickness being fixed in the panel body 4 above longitudinal rib 3 is 0.07m.
In the prefabricated ultra-high performance concrete half-through beam element of the present embodiment, ultra-high performance concrete girder 5 adopts the inverted T-shaped structure that bottom is widened, size 0.90m is widened in the bottom of ultra-high performance concrete girder 5, the girder thickness of ultra-high performance concrete girder 5 is 0.25m, and the overall height of ultra-high performance concrete girder 5 is that prefabricated ultra-high performance concrete half-through beam element is across the 1/20 of footpath.
The prefabricated ultra-high performance concrete half-through beam element of above-mentioned the present embodiment can splice and combine, constitute the prefabricated ultra-high performance concrete half-through bridge girder construction of a kind of present invention, this half-through bridge girder construction is to be formed along bridge is longitudinal spliced by the prefabricated ultra-high performance concrete half-through beam element of multiple the invention described above, adjacent two half-through beam elements are that the portion of being connected through connects, and connecting portion is provided with the cast-in-place seam 9 of ultra-high performance concrete. Ultra-high performance concrete diaphragm plate 7 is arranged along whole bridge longitudinal separation, and spacing is 3.0m, and thickness is 0.1m��0.2m. Additionally, end at each prefabricated ultra-high performance concrete half-through beam element, one ultra-high performance concrete end diaphragm plate 6 as shown in Figure 3 can be set especially, the height of the ultra-high performance concrete diaphragm plate 7 of ultra-high performance concrete end diaphragm plate 6 laying more uniform than middle part is higher, the height of ultra-high performance concrete diaphragm plate 7 is the 1/10 of ultra-high performance concrete girder 5 spacing, and the height of ultra-high performance concrete end diaphragm plate 6 is ultra-high performance concrete girder 5 spacing 1/6; The beam section longitudinal length of this half-through bridge girder construction is equal to bridge single span span length degree, and the present embodiment Bridge single span is 50m across footpath, and in the present embodiment, beam section transverse width is 8.25m, and constructionheightofbridge is that bridge single span is across the 1/39 of footpath. Whole ultra-high performance concrete floorings 1 are equipped with wearing course 2, ultra-high performance concrete floorings 1 are additionally provided with guardrail 8.
The construction of the half-through bridge girder construction of above-mentioned the present embodiment is particularly suitable for the bridge construction work progress of simply supported girder bridge or continuous bridge; The construction method of this prefabricated ultra-high performance concrete half-through bridge girder construction specifically includes following steps:
A () is according to the structure of above-mentioned prefabricated ultra-high performance concrete half-through beam element, at the integral prefabricated ultra-high performance concrete girder 5 of factory, ultra-high performance concrete diaphragm plate 7 and ultra-high performance concrete floorings 1, form independent prefabricated ultra-high performance concrete half-through beam element;The ultra-high performance concrete material that prefabricated ultra-high performance concrete half-through beam element uses is the ultra-high performance concrete of more than bending and tensile strength 20MPa, comprcssive strength more than 120MPa;
B (), after ultra-high performance concrete girder 5 reaches design strength, carries out on-site hoisting; After lifting puts in place, by arranging the cast-in-place seam 9 of ultra-high performance concrete at the connecting portion of adjacent two prefabricated ultra-high performance concrete half-through beam elements, prefabricated ultra-high performance concrete half-through beam element is longitudinally spliced to form half-through bridge girder construction main body successively along bridge;
C () finally completes appurtenant work (such as guardrail 8) and the construction of deck paving (such as wearing course 2).
Embodiment 2:
The present invention may also provide the another kind of prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element that can be applicable in bridge structure as shown in Figure 4, this prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element is to be spliced along bridge lateral by the prefabricated ultra-high performance concrete half-through beam element in two above-described embodiments 1, and the prefabricated ultra-high performance concrete half-through beam element of both of the aforesaid be by its each side ultra-high performance concrete girder 5 to be spliced to form one side by side overall. So just transverse width and the bus capacity of bridge be can be effectively increased, technical advantage and the economic advantages of the present invention can also continue to play simultaneously.
Claims (10)
1. the prefabricated ultra-high performance concrete half-through beam element that can be applicable in bridge structure, it is characterised in that: described prefabricated ultra-high performance concrete half-through beam element is mainly by ultra-high performance concrete girder (5), ultra-high performance concrete diaphragm plate (7) with ultra-high performance concrete floorings (1) are integral prefabricated forms, described ultra-high performance concrete girder (5) is arranged on ultra-high performance concrete floorings (1) both sides and affixed with it, and the ultra-high performance concrete girder (5) being positioned at both sides is parallel to each other, described ultra-high performance concrete diaphragm plate (7) is longitudinally uniformly laid in ultra-high performance concrete floorings (1) lower section along bridge, and it is affixed with the ultra-high performance concrete girder (5) of ultra-high performance concrete floorings (1) and both sides, described ultra-high performance concrete floorings (1) are supported jointly by ultra-high performance concrete girder (5) and ultra-high performance concrete diaphragm plate (7), described prefabricated ultra-high performance concrete half-through beam element is set to along the one or both sides that bridge is longitudinal carry out, with contiguous prefabricated ultra-high performance concrete half-through beam element, the connecting portion that splices.
2. prefabricated ultra-high performance concrete half-through beam element according to claim 1, it is characterized in that: described ultra-high performance concrete floorings (1) adopt bottom with the slim plate of longitudinal rib (3), and described longitudinal rib (3) is evenly distributed on the bottom surface of ultra-high performance concrete floorings (1) along bridge lateral.
3. prefabricated ultra-high performance concrete half-through beam element according to claim 2, it is characterised in that: the end face width of described longitudinal rib (3) is more than its bottom width, and the width of longitudinal rib (3) is diminished by end face to bottom surface is gradual.
4. prefabricated ultra-high performance concrete half-through beam element according to claim 3, it is characterised in that: the cross section of described longitudinal rib (3) is an inverted trapezoidal shape; The end face width of described longitudinal rib (3) is 0.12m��0.20m, and described longitudinal rib (3) bottom width is 0.10m��0.18m, and the spacing of adjacent two longitudinal rib (3) is 0.45m��1.50m.
5. the prefabricated ultra-high performance concrete half-through beam element according to any one of claim 2-4, it is characterized in that: the plate gross thickness of described ultra-high performance concrete floorings (1) is 0.18m��0.25m, wherein, the thickness of the panel body (4) being fixed in described longitudinal rib (3) top is 0.05m��0.10m.
6. the prefabricated ultra-high performance concrete half-through beam element according to any one of claim 1-4, it is characterized in that: described ultra-high performance concrete girder (5) adopts the inverted T-shaped structure that bottom is widened, size 0.60m��2.0m is widened in the bottom of described ultra-high performance concrete girder (5), the thickness of described ultra-high performance concrete girder (5) is 0.20m��0.30m, and the overall height of described ultra-high performance concrete girder (5) is that prefabricated ultra-high performance concrete half-through beam element is across the 1/18��1/30 of footpath.
7. the prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element that can be applicable in bridge structure, it is characterized in that: the described prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element prefabricated ultra-high performance concrete half-through beam element according to any one of two claim 1-6 is spliced along bridge lateral, and both of the aforesaid prefabricated ultra-high performance concrete half-through beam element be by its each side ultra-high performance concrete girder (5) affixed side by side and shape is integral.
8. a prefabricated ultra-high performance concrete half-through bridge girder construction, it is characterized in that: described half-through bridge girder construction is the prefabricated ultra-high performance concrete half-through beam element according to any one of multiple claim 1-6 or the prefabricated ultra-high performance concrete Two bors d's oeuveres half-through beam element described in claim 7 forms along bridge is longitudinal spliced, adjacent two half-through beam elements are that the portion of being connected through connects, and described connecting portion is provided with the cast-in-place seam of ultra-high performance concrete (9).
9. prefabricated ultra-high performance concrete half-through bridge girder construction according to claim 8, it is characterized in that: described ultra-high performance concrete diaphragm plate (7) is 2.5m��5.0m along the spacing that bridge is longitudinal, thickness is 0.1m��0.2m, is highly the 1/5��1/15 of ultra-high performance concrete girder (5) spacing.
10. a construction method for prefabricated ultra-high performance concrete half-through bridge girder construction as claimed in claim 8 or 9, the construction of described half-through bridge girder construction is the bridge construction work progress being applied to simply supported girder bridge or continuous bridge; The beam section longitudinal length of described half-through bridge girder construction is equal to bridge single span span length degree, and described bridge single span is 20m��60m across footpath, and described constructionheightofbridge is that bridge single span is across the 1/35��1/50 of footpath; This construction method specifically includes following steps:
A () is according to the structure of described prefabricated ultra-high performance concrete half-through beam element, at the integral prefabricated described ultra-high performance concrete girder (5) of factory, ultra-high performance concrete diaphragm plate (7) and ultra-high performance concrete floorings (1), form independent prefabricated ultra-high performance concrete half-through beam element; The ultra-high performance concrete material that prefabricated ultra-high performance concrete half-through beam element uses is the ultra-high performance concrete of more than bending and tensile strength 20MPa, comprcssive strength more than 120MPa;
B (), after ultra-high performance concrete girder (5) reaches design strength, carries out on-site hoisting; After lifting puts in place, by arranging the cast-in-place seam of ultra-high performance concrete (9) at the connecting portion of adjacent two prefabricated ultra-high performance concrete half-through beam elements, described prefabricated ultra-high performance concrete half-through beam element is longitudinally spliced to form half-through bridge girder construction main body successively along bridge;
C () finally completes the construction of appurtenant work and deck paving.
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| CN106192718A (en) * | 2016-08-29 | 2016-12-07 | 广东冠生土木工程技术有限公司 | A kind of can the bridge of quick-assembling and manufacture method thereof |
| CN109235222A (en) * | 2018-10-17 | 2019-01-18 | 湖南大学 | Light-duty full assembled great cantilever ultra-high performance concrete index chain and its construction method |
| CN109853358A (en) * | 2019-01-24 | 2019-06-07 | 西安公路研究院 | A kind of Very Low Clearance precast assembly integration UHPC spill beam bridge and its construction method |
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| CN205474797U (en) * | 2016-02-01 | 2016-08-17 | 湖南大学 | Hold formula beam element and half through bridge girder construction among prefabricated ultra high performance concrete |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106192718A (en) * | 2016-08-29 | 2016-12-07 | 广东冠生土木工程技术有限公司 | A kind of can the bridge of quick-assembling and manufacture method thereof |
| CN109235222A (en) * | 2018-10-17 | 2019-01-18 | 湖南大学 | Light-duty full assembled great cantilever ultra-high performance concrete index chain and its construction method |
| CN109235222B (en) * | 2018-10-17 | 2020-04-14 | 湖南大学 | Light full-assembly type large cantilever ultrahigh-performance concrete finned beam and construction method thereof |
| CN109853358A (en) * | 2019-01-24 | 2019-06-07 | 西安公路研究院 | A kind of Very Low Clearance precast assembly integration UHPC spill beam bridge and its construction method |
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| CN105648898B (en) | 2018-09-25 |
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