CN206616444U - A kind of bolt connecting type steel concrete combination beam - Google Patents

Abstract

The utility model is related to a kind of bolt connecting type steel concrete combination beam, and the steel concrete combination beam is at least made up of bridge section, and each bridge section includes the i shaped steel girder that concrete slab and some are parallel to each other；Characterized in that, the web both sides of described i shaped steel girder are evenly distributed with the ribbed stiffener of the upper lower flange of connection；Described concrete slab is the array being made up of Rectangular Concrete plate, and spreads frame in the following manner on I-steel girder：Provided with a row Rectangular Concrete plate between every two adjacent i shaped steel girders, the both sides of each block of Rectangular Concrete plate ride on the top flange of adjacent two i shaped steel girders respectively, and are fixedly connected by high-strength bolt with the top flange；In described concrete slab build joint is equipped between two blocks of adjacent Rectangular Concrete plates；When the steel concrete combination beam is made up of two beam sections more than, expansion joint is provided between adjacent two bridges section.

Description

A kind of bolt connecting type steel concrete combination beam

Technical field

The utility model is related to the bridge being made up of segregative standard section or part.

Background technology

With the constantly propulsion and the proposition of recyclable structuring concept of new Development of China's Urbanization, sustainable and low-carbon is greatly developed Bridge structure has become the important directions of current engineering structure development, and the recyclable bridge structure of combination is arisen at the historic moment.Due to group Closing recyclable bridge structure not only has traditional single bridge structure intensity height, and anti-surrender ability is strong, the characteristics of stress deformation is small, Have concurrently and be easy to construction, economic benefit is good, the advantages of recoverable, combining structure performance advantage can be given full play to, lifting is public Road and bridge beam quality, and meet green, the development trend of energy-saving and environmental protection, boosting highway construction transition and upgrade is current bridge knot The main flow direction of structure development.

Steel concrete combination beam is a kind of very common combined beam structure form, and this structure type is by steel main beam and coagulation The material property of native panel combines, and improves the rigidity of combination beam, reduces combination depth of beam, not only saves About steel, shorten construction period, also improve the anti-seismic performance of beam main body.

However, existing steel concrete combination beam it is same across interior concrete slab be usually a monoblock, this causes concrete The prefabricated difficulty of panel is larger；Simultaneously because this concrete surface plate bulk is big, weight is high, its transport and hoisting difficulty are all very Greatly, if lifting is improper easily to fall beam phenomenon.

The combining form of traditional steel concrete combination beam be T-shaped combination, i.e. steel main beam longitudinal bracing in the middle part of concrete slab, When structure bears evenly load, easily there is the crackle of Longitudinal extending in the middle part of concrete slab upper surface, but is due to concrete Upper surface is covered with asphalt pavement surface layer, and crack is difficult to be found, and asphalt pavement surface layer then occurs what several were parallel to each other Transverse crack, some pieces are horizontally divided into by road surface, and each segmentation block height rises and falls, and multiple repair is had no result；Study carefully its underlying causes, It is under the state that bidirectional pre-fabricated panels are isolated as some unidirectional Slab elements by transverse crack, it is anxious with respect to original structure bearing capacity Reduce sharply low, it is impossible to ensure traffic safety and comfort level.

In addition, generally using WELDING STUDS connection between concrete slab and steel main beam in existing steel concrete combination beam, i.e. The upper surface welding WELDING STUDS of steel main beam, in the reserved hole for wearing WELDING STUDS in the edge of concrete slab, then by secondary The method of concrete cast-in-situ links together steel main beam and concrete slab；Not only installation difficulty is big for such connected mode, Also it is unfavorable for dismounting, adds the difficulty of later stage repairerment and rectification.

The content of the invention

Technical problem to be solved in the utility model is to provide a kind of bolt connecting type steel concrete combination beam, steel concrete combination Beam has simple, short time limit of constructing, and later period maintenance rectifies and improves easy advantage.

The utility model solve above-mentioned technical problem technical scheme be：

A kind of bolt connecting type steel concrete combination beam, the steel concrete combination beam is at least made up of bridge section, each bridge section bag Concrete slab and some i shaped steel girders are included, wherein, some i shaped steel girders are parallel to each other, and two point It is not supported on by shock isolating pedestal on two bent caps for supporting bridge section；Characterized in that,

The web both sides of described i shaped steel girder are evenly distributed with the ribbed stiffener of the upper lower flange of connection；

Described concrete slab is the array being made up of Rectangular Concrete plate, and spreads frame in the following manner in I-steel master Liang Shang：Provided with a row Rectangular Concrete plate, each block of Rectangular Concrete plate between every two adjacent i shaped steel girders Both sides ride over respectively on the top flange of adjacent two i shaped steel girders, and fixed by high-strength bolt with the top flange Connection；

In described concrete slab build joint is equipped between two blocks of adjacent Rectangular Concrete plates；

When the steel concrete combination beam is made up of two beam sections more than, expansion joint is provided between adjacent two bridges section.

The utility model has following beneficial effect：

1st, combine to form combination beam using the concrete slab array and i shaped steel girder of fritter, concrete slab it is prefabricated, The work difficulty of transport and lifting is obviously reduced.

2nd, it is bolted between concrete slab and i shaped steel girder, it is cast-in-place without second coagulation soil, it is easy to install Construction, the duration substantially shortens；And the later stage repairs, rectification is even removed difficulty and is obviously reduced.

3rd, the both sides of each block of Rectangular Concrete plate ride on two i shaped steels respectively, and pass through high strength exploitation Π types construction is formed, its mechanical model can be reduced to the once indeterminate simply supported beam system of pin-ended, when Rectangular Concrete plate When bearing evenly load, plate body is laterally necessarily occurred in plate bottom by its curved crack, is easy to the early processing of early discovery, it is to avoid girder fragility Destruction.

Brief description of the drawings

Fig. 1~3 are the one kind two constituted using bolt connecting type steel concrete combination beam described in the utility model across combination beam The structural representation of bridge, wherein, Fig. 1 is front view (section view), and the enlarged drawing that Fig. 2 is in Fig. 1 local I, Fig. 3 is part in Fig. 1 II enlarged drawing.

Fig. 4~9 be Fig. 1~3 shown in two across in composite beam bridge a bridge section structural representation, wherein, Fig. 4 is front view (section view), Fig. 5 is Fig. 4 A-A sectional views, and Fig. 6 is the ordered state schematic diagram of Rectangular Concrete plate under vertical view state, and Fig. 7 is Local III enlarged drawing in Fig. 4, the enlarged drawing that Fig. 8 is in Fig. 5 local IV, the enlarged drawing that Fig. 9 is in Fig. 5 local V.

Embodiment

Referring to Fig. 1~3, this example for it is a kind of by the bolt connecting type steel concrete combination beam constitute two across composite beam bridge, bag Include has two for by positioned at described two across composite beam bridge two in the two bridges section 1 of three bent cap supports, three bent caps The abutment bent cap 5 that supports of abutment 4, it is by the bridge pier lid that is supported positioned at described two bridge piers 2 in the middle part of composite beam bridge to have one Beam 3；Relative one described of two bridges section 1 is supported on pier cap beam 3 by rubber earthquake isolation support 8 respectively, opposite one It is supported on respectively by rubber earthquake isolation support 8 on two abutment bent caps 5；And, between two bridges section, the 1 relative end of one Provided with the wide expansion joints 7 of 80mm, both with abutment bent cap 5 is overlapped one be also respectively equipped between the parados 6 of corresponding abutment 4 Expansion joint 7 wide 80mm.

Referring to Fig. 4~9, each bridge section 1 includes five i shaped steel girders 9 for being parallel to each other and being equally spaced and paving frame Concrete slab on five i shaped steel girders 9；The web 9-3 of each i shaped steel girder 9 both sides are uniform The web of four vertical ribbed stiffener 9-1, each ribbed stiffener 9-1 for being coupled upper lower flange and i shaped steel girder 9 is distributed with and upper The side of lower flange connection is both needed to two-sided welding；Two of each i shaped steel girder 9 is respectively by the rubber earthquake isolation support 8 On an abutment bent cap 5 for being supported on the pier cap beam 3 and support one bridge section 1；Described concrete slab is by 12 In 3 × 4 array that block Rectangular Concrete plate 10 is constituted, the array 15mm is left between two blocks of adjacent Rectangular Concrete plates 10 Wide build joint 13；Spreading frame in five described i shaped steel girders 9, between adjacent two has the row Rectangular Concrete Each piece of both sides are overlapped on the upper limb of adjacent two i shaped steel girders 9 respectively in plate 10, the row Rectangular Concrete plate 10 The upper surface of side relative edge 9-2, and be fixedly connected by 10.9 grades of high-strength bolt 12；The mode being fixedly connected For：Bolt hole is opened up along its length on the top flange 9-2 of the i shaped steel girder 9, in the both sides of Rectangular Concrete plate 10 Counter sink is reserved in the position of the correspondence bolt hole, and the high-strength bolt 12 is from bottom to top by the upper limb of i shaped steel girder 9 Together with edge 9-2 is worn with Rectangular Concrete plate 10, and it is locked by nut in the counter sink.The two row rectangles positioned at outside The outer side edges of concrete slab 10 stretch out to form the bridge edge of a wing, and upper with the i shaped steel girder 9 on the support bridge edge of a wing Edge of a wing 9-2 both sides are respectively adopted high-strength bolt 12 and are fixedly connected, and hereafter pour drip on the concrete slab of two bridges section 1 Blue or green road surface 11 can complete in this example two across composite beam bridge construction.

Claims (1)

1. a kind of bolt connecting type steel concrete combination beam, the steel concrete combination beam is at least made up of bridge section, each bridge section includes Concrete slab and some i shaped steel girders, wherein, some i shaped steel girders are parallel to each other, and two is distinguished It is supported on by shock isolating pedestal on two bent caps for supporting bridge section；Characterized in that,

The web both sides of described i shaped steel girder are evenly distributed with the ribbed stiffener of the upper lower flange of connection；

Described concrete slab is the array being made up of Rectangular Concrete plate, and spreads frame in the following manner in I-steel girder On：Provided with a row Rectangular Concrete plate between every two adjacent i shaped steel girders, each block of Rectangular Concrete plate Both sides ride on the top flange of adjacent two i shaped steel girders respectively, and fix company by high-strength bolt and the top flange Connect；

In described concrete slab build joint is equipped between two blocks of adjacent Rectangular Concrete plates；

When the steel concrete combination beam is made up of two beam sections more than, expansion joint is provided between adjacent two bridges section.