CN1042757C

CN1042757C - Shell structural belt conveyer trestle bridge

Info

Publication number: CN1042757C
Application number: CN92109665A
Authority: CN
Inventors: 张希孔; 杜小云
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-26
Filing date: 1992-08-26
Publication date: 1999-03-31
Anticipated expiration: 2007-08-26
Also published as: CN1119618A

Abstract

The present invention relates to a shell structural belt conveyer trestle bridge which comprises a base, support columns connected with the base, a crossing part arranged on the support columns, and a roof covering which covers over the crossing part, wherein the base, the support columns, the crossing part and the roof covering are a thin wall structure, and the ratio of height and thickness is larger than 10. the present invention has the advantages of light dead weight, large span, good shock resistance, low manufacturing cost, high construction speed, long service life and beautiful appearance, the dead weight of the present invention is half to two thirds of the dead weight of the original trestle bridge, the span is from 6 to 42 meters, the civil engineering investment can save 20 to 40%, and the construction time can save one fourth to one third.

Description

The belt conveyer trestle of plate and shell structure

The present invention relates to a kind of belt hauler trestle, specifically a kind of belt conveyer trestle of plate and shell structure.

Present belt conveyer trestle kind is a lot, and brickwork construction is arranged, and steel concrete, brick mix structure are arranged, and full steel structure is also arranged.Generally from heavy, span is little for above structure, and it is big to consume building materials, though full steel structure is in light weight, but make large span, but the cost height, poor durability, maintenance cost height.

The objective of the invention is to design a kind of from heavy and light, span is big, and cost is low, the belt conveyer trestle of the steel concrete plate and shell structure of long service life.

The plate and shell structure belt conveyer trestle of steel concrete of the present invention, comprise the frid of putting upside down, or bucket type plate, or the basis of positive conical shell, T type post or L type post, or the bearing post of [] type post, the leap part of two-way thin-walled frid beam body; thin wall lattice configuration plate, or form boarding, or the roofing of long barrel shell plate of single wavestrip rib or two-fold flap.

Thin-walled frid beam, the thin wall lattice configuration plate, long barrel shell plate of form boarding list wavestrip rib or two-fold flap all are the thin-wall reinforced concrete members, the ratio of the height of thin-wall member and thickness is all greater than 10.

Enumerate with reference to the accompanying drawings below thick, high size relationship such as the following table of thin-walled frid beam: accompanying drawing order 12345678 high h＞1000＞1000＞1000＞1000＞1000＞1000＞2200＞2200 thick b 100 100 100 100 100 100 100 100 accompanying drawings order thick b 100 100 100 100 100 100 100 in 9 10 11 12 13 14 high h＞2200＞2200＞2200＞2200＞2200＞1000＞1000

From showing h/b＞10 as can be seen

The width of trestle of the present invention can be designed into 2.5-12m, but span can design 6-42mm.According to different width and span requirement, can select for use by accompanying drawing.If the width I is selected accompanying drawing 1～3 type for use, if width can be selected 4～6 types for use greatly, if span can be selected accompanying drawing 7～12 types greatly for use.Its computational methods all can be calculated with computational methods such as i beam and relevant flap and housings by the T plate-girder.Its structure requires to add anti-swirl pot in the plate domestic demand that encrusts, and adding anti-swirl pot is to prevent the bent distortion of structure wing, increases stability.

Advantage of the present invention be trestle from heavy and light, have only originally 1/2～2/3, span is big, can be 6～42 meters, anti-seismic performance is good, cost is low, can save civil works investment 20～40%, construction speed is fast, can shift to an earlier date the engineering time 1/4～1/3.Long service life, good looking appearance.

Below in conjunction with accompanying drawing embodiment is elaborated:

Fig. 1～Figure 14 is the leap part of belt conveyer trestle of plate and shell structure and the sectional view of roofing.

Figure 15 is the trestle schematic overview.

Figure 16 is the trestle schematic overview.

Figure 17 is a trestle top barrel shell arrangement of reinforcement.

Figure 18 is a trestle lower channel plate-girder arrangement of reinforcement.

Figure 19 is the calculated load schematic diagram.

Striding 18.0m with wide 3.0m is that the example brief calculation is as follows:

18.0m be freely-supported, lotus P=300kg/m lives ², dead load frid beam is 700kg/m-) and its design formulas such as Figure 19 span centre bending moment M _In=1/10q ρ ²1. bearing bending moment M _Clearly=1/40ql ²2. shear force Q ₁=R ₁=R ₂=1/2ql ... 3. calculate q=1.5 * 300+700=1150kg/m M _In=1/10 * 1150 * 18 ²=37260kg M _Family=1/40 * 1150 * 18 ²=9315kg Q ₁=1/2 * 1150 * 18=20700kg

Can merge into the I-shaped section table that double B and Q look into the relevant height of steel concrete that adds by flute profile or double flute, arrangement of reinforcement can be obtained the main stress muscle.

Two) arrangement of reinforcement is constructed as follows figure:

(1) top barrel shell arrangement of reinforcement such as Figure 17

Tabula thickness of slab 80, join two guiding principle φ 6 and 1. join 2 φ 12 for 100 times

(2) lower channel plate-girder arrangement of reinforcement such as Figure 18

Can be with two-way hoop arrangement of reinforcement when (3) bearing post is T shape or L shaped thin plate.

(4) basis can be by various shells and flap arrangement of reinforcement.

Above bearing post, the arrangement of reinforcement on basis are conventional arrangements of reinforcement.Part is crossed on the bearing post basis, and arrangements of reinforcement such as roofing are carried out the back concrete placing.The ratio of the height of its ready-made reinforced concrete structure and thickness is greater than 10.

Claims

1, a kind of belt conveyer trestle of plate and shell structure, described belt conveyer trestle plate and shell structure is to mix earth by reinforcing bar to constitute, comprise basis (1), bearing post (2), cross over part (3), roofing (4) is characterized in that crossing over part (3) and is two-way thin-walled frid beam body, and the ratio of its height and thickness is greater than 10.

2, the belt conveyer lattice bridge of plate and shell structure according to claim 1 is characterized in that roofing (4) is a lattice plate, or form boarding, or the long barrel shell of single wavestrip rib, or the two-fold flap.

3, the belt conveyer trestle of plate and shell structure according to claim 1 is characterized in that basis (1) is the frid of putting upside down, or the bucket type flap, or positive conical shell.