CN205604739U - A fixing device that is used for decline angle steel intertube to connect - Google Patents

Abstract

The utility model discloses a simple structure is reasonable, construction convenience, a fixing device that is used for decline angle steel intertube to connect that supported effects is good, need interconnect steel pipe as an organic whole including 2, 2 the adjacent terminal surface department of root steel pipe is provided with a plurality of otic placodes group, otic placode group is including first otic placode and second otic placode, the quantity of otic placode group is a plurality of, the both sides of otic placode group all are fixed with splint. This fixing device easy operation that is under construction, the construction is swift, saves group altogether such as traditional hawser and supporting the tire RACK, the saving cost.

Description

A kind of fixing device connected between high inclination-angle steel pipe

Technical field

This utility model relates to technical field of building construction, particularly relate to a kind of between high inclination-angle steel pipe connect Fixing device.

Background technology

In construction, when carrying out high building construction, owing to high building housing steel pipe column diameter is excessive, generally 1300mm, 1200mm, 1100mm, 900mm, 800mm, 700mm, it has relatively large inclination angle simultaneously, and generally 30-50 ° is not Deng, need at two adjacent steel pipe columns plus temporary support for the construction between this high inclination-angle steel pipe column, constructed in the past In be all to use moulding bed and rope be supported and fix, but this form of construction work the most greatly wasting manpower and material resources, Construction inconvenience, the unreasonable of supporting construction will have a strong impact on being smoothed out of whole construction simultaneously.

Utility model content

In order to solve above-mentioned technical problem, this utility model provides a kind of simple and reasonable, easy construction, support effect The best fixing device connected between high inclination-angle steel pipe.

Technical problem to be solved in the utility model is achieved through the following technical solutions:

A kind of fixing device connected between high inclination-angle steel pipe of the present utility model, is connected to including 2 needs The steel pipe of one, the end that described 2 steel pipes are adjacent is provided with some otic placode groups, and described otic placode group includes the first otic placode and the Two otic placodes, described first otic placode is arranged at the end of closing on of 1 steel pipe, and described second otic placode is arranged at facing of another 1 steel pipe At close end, axial along steel pipe, described first otic placode and the second otic placode are placed in same plane；

The quantity of described otic placode group is several, and described otic placode group is uniformly distributed on the circumference of 2 steel pipes, described otic placode The both sides of group are respectively and fixedly provided with clamping plate.

Further, the first otic placode of described otic placode group and the second otic placode all offer some bolts hole, described otic placode All offering some bolts hole on the both sides clamping plate of group, the clamping plate of described otic placode group and both sides are bolted.

Further, described bolt is high-strength bolt.

Further, described otic placode bond pads is fixed on 2 steel pipes.

Further, a diameter of 1.3m of described 2 steel pipes, the length of described 2 steel pipes is respectively less than equal to 7.5m, described The angle of 2 steel pipes and vertical is 49 °；

First otic placode of described otic placode group and the size of the second otic placode are 135x90mm, described first otic placode and the second otic placode Thickness be 20mm, the thickness of described clamping plate is 16mm.

By such scheme, this utility model at least has the advantage that

Fixing device of the present utility model is mainly by the otic placode with bolt hole, the clamping plate with bolt hole and high-strength spiral shell Bolt, otic placode is fixing structurally by the form of welding, then uses two clamping plates and high-strength bolt lower floor to be tied by otic placode Structure and superstructure are fixed temporarily, use two laminated planks to be mainly mechanics principle, it is ensured that the clamping plate on otic placode both sides and bolt Stress equalization.Employing fixed by traditional oblique steel pipe is hawser and support jig, takes a lot of work, time-consuming.And this bracing means is simple to operate, Quick construction, saves the group altogether such as traditional hawser and support jig, cost-effective.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and can being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed Describe in detail bright as after.

Accompanying drawing explanation

Fig. 1 is that the otic placode group mounting structure of a kind of fixing device connected between high inclination-angle steel pipe of the present utility model shows It is intended to；

Fig. 2 is the mounting structure schematic diagram of a kind of fixing device connected between high inclination-angle steel pipe shown in Fig. 1；

Fig. 3 is the structural representation of a kind of fixing device connected between high inclination-angle steel pipe shown in Fig. 1.

1, steel pipe；2, otic placode group；3, bolt hole；4, bolt；5, clamping plate.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Below Embodiment is used for illustrating this utility model, but is not limited to scope of the present utility model.

See shown in Fig. 1-2, a kind of fixing device connected between high inclination-angle steel pipe, it is connected with each other including 2 needs 1,2 ends that steel pipe 1 is adjacent of the steel pipe being integrated are provided with some otic placode groups 2, and otic placode group 2 includes the first otic placode and second Otic placode, what the first otic placode was arranged at 1 steel pipe 1 closes on end, and what the second otic placode was arranged at another 1 steel pipe 1 closes on end, Along steel pipe 1 axially, the first otic placode and the second otic placode are placed in same plane；

The quantity of otic placode group 2 is several, and otic placode group 2 is uniformly distributed on the circumference of 2 steel pipes 1, the both sides of otic placode group 2 It is respectively and fixedly provided with clamping plate 5.

Some bolts hole 3 are all offered, on the both sides clamping plate 5 of otic placode group 2 on first otic placode of otic placode group 2 and the second otic placode All offering some bolts hole 3, the clamping plate 5 of otic placode group 2 and both sides are fixed by bolt 4.

Bolt 4 is high-strength bolt.Otic placode group 2 is fixedly welded on 2 steel pipes 1.

A diameter of 1.3m of 2 steel pipes 1, the length of 2 steel pipes 1 is respectively less than equal to 7.5m, 2 steel pipes 1 and vertical Angle be 49 °；

First otic placode of otic placode group 2 and the size of the second otic placode are 135x90mm, the first otic placode and the thickness of the second otic placode For 20mm, the thickness of clamping plate 5 is 16mm.

Fixing device of the present utility model is mainly by the otic placode group 2 with bolt hole 3, clamping plate 5 and with bolt hole 3 High-strength bolt, otic placode is fixing structurally by the form of welding, then uses two clamping plates 5 and high-strength bolt by otic placode group Understructure and superstructure are fixed by 2 temporarily, use two laminated plank 5 mainly mechanics principles, it is ensured that otic placode group 2 both sides Clamping plate 5 and bolt 4 stress equalization.Employing fixed by traditional oblique steel pipe is hawser and support jig, takes a lot of work, time-consuming.And originally add Be fixedly mounted with put simple to operate, quick construction, save the altogether group such as traditional hawser and support jig, cost-effective.

Wherein the computational methods of otic placode and bolt 4 are as described below:

(1) to the stress of the steel pipe column of differing heights through com-parison and analysis, wherein caliber D=1.3m, greatest length L= 7.5m, maximum deadweight G=125KN, steel pipe column and vertical face directly between angle 49 ° time stress the most unfavorable.

(2) otic placode size: b=90mm (the otic placode Bolt centre of form is to joint edge), (the otic placode Bolt centre of form arrives h=135mm The distance of the vertical of steel pipe column docking), effective fusion length lw=240mm of otic placode (otic placode weld all around, leg 14mm), otic placode is thick Degree t=20mm, connecting cleat t0=16mm；

(3) high-strength bolt selects M24,10.9s,(calculating by plain bolt),

(4) all steel material Q345B, first-order weld,

(5) equivalent wind action:

Fundamental wind pressure ω₀=0.3KN/m2 (10 years one, Beijing chance)

Height coefficient μ_z=2.30 (at 200 meters, surface roughness is C class area)

Wind pulse β at highly z_z=2.1 (200 meters)

Structural shape factor of wind load μ_s=1

Characteristi cvalue o fwindload: ω_k=ω₀β_zμ_zμ_s=0.3 × 2.1 × 2.30 × 1=1.449KN/m2

Steel pipe column front face area: S=DL=1.3 × 7.5=9.75m2

Wind load: ω=ω_kS=1.449 × 9.75=14.5KN

(6) construction loads: mainly workmen's weight, negligible relative to wind load and deadweight dead load.

(7) Load Combination

Load Combination=wind load ω LX+ gravity load G+ construction loads

=1.4 × 14.5+1.35 × 125+1.2 × 0=189.05KN

(8) pillar internal force calculates

A, wind load produce moment of flexure

M1=ω LX × L/2=14.5 × (7.50/2)=54.4KN m

The deadweight of b, pillar produces the moment of flexure of (containing construction loads)

M2=N × L/2 × Sin49 °=125 × (7.5/2) × 0.755=353.90KN m

Total moment of flexure that c, pillar bear

M=M1+M2=54.4+353.9=408.3KN m

Horizontal wind excitation after d, amplification and vertical load

V=1.4 ω LX=1.4 × 14.5=20.3KN

N=1.35G=1.35 × 125=168.8KN

One, otic placode calculates

Otic placode internal force

V plate=V/2+N × Sin49 °/2=20.3/2+168.8 × 0.755/2=73.9KN

N plate=M/ (D+2b)=408.3/ (1.3+2 × 0.09)=275.9KN

Otic placode checks

Compressive stress: σ_Plate=N plate/2t (B-24)=2759000/2 × 16 × (90-24)=130.6Mpa

Shear stress: τ_Plate=V plate/2t (B-24)=73900/2 × 16 × (90-24)=34.9Mpa

Combined stress:

σ_Group＜ [σ]=295Mpa

Otic placode intensity meets checking computations requirement.

Two, welding seam calculating

Weld seam internal force value

V seam=M/ (D+2b)=408.3/ (1.3+2 × 0.09)=275.9KN

N seam=V/2+N × Sin49 °/2=20.3/2+168.8 × 0.755/2=73.9KN

M seam=V seam × b+N seam × h=275.9 × 0.09+73.9 × 0.135=34.81KN m

Weld seam checks

When angle welding checks, check according to below equation, steel material Q345B, three grades of weld seams, E50 type welding rod Manual welding,

β_f=1.22 h_e=0.7h_f h_f-foot welding height l_w: it is connector thickness that welding seam design length deducts 2t, t.

Otic placode weld strength meets checking computations requirement.

Two, bolt calculates

V bolt=V/2+N × Sin49 °/2=20.3/2+168.8 × 0.755/2=73.9KN

N bolt=M/ (D+2b)=408.3/ (1.3+2 × 0.09)=275.9KN

M bolt=V bolt × h=73.9 × 0.135=10.0KN m

$N_V^b=n_V\frac{{\mathrm{\πd}}_e^2}{4}{f}_V^b=2\×\frac{3.14\×{21.19}^2}{4}\×310=218.5KN$

Pressure-bearing type bolt shear connections:

$N_c^b=d\·\Σt\·f_c^b=24\×20\×510=244.8KN$

The shear-carrying capacity taking single bolt is 218.5KN

The maximum value with joint efforts that single bolt is subject to is:

Meet checking computations requirement.

Employing fixed by traditional oblique steel pipe is hawser and support jig, takes a lot of work, time-consuming.And this bracing means is simple to operate, Quick construction, saves the group altogether such as traditional hawser and support jig, cost-effective.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and can being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed Describe in detail bright as after.

The above is only preferred implementation of the present utility model, is not limited to this utility model, it is noted that For those skilled in the art, on the premise of without departing from this utility model know-why, it is also possible to do Going out some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.

Claims (5)

1. the fixing device connected between high inclination-angle steel pipe, is connected with each other the steel pipe (1) being integrated including 2 needs, It is characterized in that, the adjacent end of described 2 steel pipes (1) is provided with some otic placode groups (2), and described otic placode group (2) includes One otic placode and the second otic placode, described first otic placode is arranged at the end of closing on of 1 steel pipe (1), and described second otic placode is arranged at Another 1 steel pipe (1) close on end, axial along steel pipe (1), described first otic placode and the second otic placode are placed in same plane；

The quantity of described otic placode group (2) is several, and described otic placode group (2) is uniformly distributed on the circumference of 2 steel pipes (1), institute The both sides stating otic placode group (2) are respectively and fixedly provided with clamping plate (5).

A kind of fixing device connected between high inclination-angle steel pipe the most according to claim 1, it is characterised in that described ear Some bolts hole (3), the both sides clamping plate (5) of described otic placode group (2) are all offered on first otic placode of plate group (2) and the second otic placode On all offer some bolts hole (3), the clamping plate (2) of described otic placode group (2) and both sides by bolt (4) fix.

A kind of fixing device connected between high inclination-angle steel pipe the most according to claim 2, it is characterised in that described spiral shell Bolt (4) is high-strength bolt.

A kind of fixing device connected between high inclination-angle steel pipe the most according to claim 1, it is characterised in that described ear Plate group (2) is fixedly welded on 2 steel pipes (1).

A kind of fixing device connected between high inclination-angle steel pipe the most according to claim 1, it is characterised in that described 2 A diameter of 1.3m of root steel pipe (1), the length of described 2 steel pipes (1) is respectively less than equal to 7.5m, described 2 steel pipes (1) and vertical The angle in direction is 49 °；

Described first otic placode of otic placode group (2) and the size of the second otic placode are 135x90mm, described first otic placode and the second otic placode Thickness be 20mm, the thickness of described clamping plate (5) is 16mm.