CN2420324Y

CN2420324Y - Net truss for pedestrian overcrossing

Info

Publication number: CN2420324Y
Application number: CN 00222954
Authority: CN
Inventors: 黄太明
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-27
Filing date: 2000-04-27
Publication date: 2001-02-21
Anticipated expiration: 2010-04-27

Abstract

The utility model relates to a net truss for a pedestrian overhead bridge, which is composed of an upper chord main bar 1, a web member 2, an upper plane straight bar 3, a lower chord main bar 4, a lower plane diagonal bar 5, a lower plane straight bar 6 and a reinforcing gusset 7. The utility model is characterized in that all the bars are connected by welding, and the reinforcing gusset 7 is arranged at a welded joint among the lower plane diagonal bar 5, the lower plane straight bar 6 and the lower chord main bar 4 in the lower plane; sides of the net truss look like an upended trapezoid; the upper plane looks like a shape which is like the Chinese character'tiang', the lower plane looks like a shape '*', and the upper plane and the lower plane are connected through the web member 2. The utility model has the advantages of good performance for earthquake resistance, light weight (less than a third of an equal concrete structure), high bending and shearing resistance, large span, large bearing force of load, short construction period, convenient installation and beautiful appearance.

Description

The net truss that is used for pedestrian overcrossing

The utility model relates to a kind of pedestrian overcrossing master portal structure, in particular for the net truss of pedestrian overcrossing.

What as everyone knows, the main crane span structure of present pedestrian overcrossing adopted is reinforced concrete structure or butterfly groove concrete structure.This main crane span structure is difficult to solve the span problem not only from great, and the construction period is long, and installation difficulty is big.Solve the large span problem, only in the middle of highway, support column is set, and support column is an impediment to traffic safety more.In addition, the concrete products profile is not attractive in appearance, has brought obstacle to the beautifying city.

Concrete scheme of the present utility model is: a kind of net truss that is used for pedestrian overcrossing, form by the mobile jib that winds up, web member, last plane straight-bar, lower edge mobile jib, lower plane brace, lower plane straight-bar, reinforcement gusset, it is characterized in that: the connection between each bar all is welding, between lower plane brace and the lower plane straight-bar, weld has the reinforcement gusset between lower plane straight-bar and the lower edge mobile jib in lower plane; The side of net truss is the trapezoidal of handstand; Last plane is matts, and lower plane is double check with a core, and upper and lower plane connects through web member.

Adopt such scheme, anti-seismic performance is good, in light weight (not enough equal concrete structure 1/3rd), and bending resistance cuts that ability is strong, and span is big, and bearing load is big, and the construction period is short, and is easy for installation, good looking appearance.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is a front view of the present utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the last layout plan (top plan view) of Fig. 1;

Fig. 4 is the lower plane arrangement diagram (bottom plan view) of Fig. 1.

Please see Figure 1, Fig. 2, Fig. 3, Fig. 4, the utility model mainly is made up of the mobile jib 1 that winds up, web member 2, last plane straight-bar 3, lower edge mobile jib 4, lower plane brace 5, lower plane straight-bar 6, reinforcement gusset 7, it is characterized in that: the connection between each rod member all is welding, and weld has the gusset 7 of reinforcement between interior below lower plane brace 5 and lower plane straight-bar 6, lower plane straight-bar 6 and the lower edge mobile jib 4; The side of net truss is the trapezoidal of handstand; Last plane is matts, and lower plane is double check with a core, and upper and lower plane connects through web member 2.

From above-mentioned accompanying drawing, can find out: the mobile jib 1 that winds up, lower edge mobile jib 4 than web member 2, go up plane straight-bar 3, lower plane brace 5, lower plane straight-bar 6 sectional dimension big.

As shown in Figure 3: go up the plane and form the matts structure by wind up mobile jib 1 and last plane straight-bar 3.

As shown in Figure 4: lower plane is formed the double check with a core structure by lower edge mobile jib 4, lower plane brace 5, lower plane straight-bar 6, reinforcement gusset 7.

As shown in Figure 1 and Figure 2: upper and lower plane connects through web member 2.

Claims

1, a kind of net truss that is used for pedestrian overcrossing, form by the mobile jib that winds up (1), web member (2), last plane straight-bar (3), lower edge mobile jib (4), lower plane brace (5), lower plane straight-bar (6), reinforcement gusset (7), it is characterized in that: the connection between each bar all is welding, and weld has reinforcement gusset (7) in lower plane between lower plane brace (5) and the lower plane straight-bar (6), between lower plane straight-bar (6) and the lower edge mobile jib (4); The side of net truss is the trapezoidal of handstand; Last plane is matts, and lower plane is double check with a core, and upper and lower plane connects through web member (2).

2, according to the net truss that is used for pedestrian overcrossing shown in the claim 1, it is characterized in that: the mobile jib that winds up (1), lower edge mobile jib (4) than web member (2), go up plane straight-bar (3), lower plane brace (5), lower plane straight-bar (6) sectional dimension big.