CN204530433U - Steel pipe pile foundation combination steel trestle - Google Patents

Abstract

The utility model belongs to the technical field of bridge access construction in water. In order to solve the technical problems of slow construction speed, complicated installation and poor stability of traditional trestle bridges, the utility model provides a steel pipe pile foundation combined steel trestle, which includes steel pipe piles, beams, shells Thunder beams and deck steel plates, steel pipe piles are arranged in several rows at equal intervals longitudinally along the length of the trestle, and several steel pipe piles are arranged at equal intervals in each row horizontally. The lower parts of the steel pipe piles are driven into the underwater soil, and the horizontal The middle and upper parts of two adjacent steel pipe piles are fixed by horizontal connecting rods and scissor braces. The top of the horizontally arranged steel pipe piles is erected with a beam. The Bailey beam is vertically erected on the upper beam of the steel pipe pile. The Bailey beam and the beam pass through The U-shaped iron parts are connected, the bridge deck steel plate is laid on the upper part of the Bailey beam, and the protective railings are set on both sides of the bridge deck steel plate along the length of the trestle. The utility model has simple installation and good stability, improves the construction speed of the trestle bridge, reduces the construction cost, and ensures the safety of the later use process.

Description

Steel pipe pile foundation composite steel trestle

technical field

The utility model belongs to the technical field of bridge access construction in water, and in particular relates to a combined steel trestle bridge with steel pipe pile foundations.

Background technique

In bridge construction, the trestle bridge is a temporary bridge facility built to transport materials, equipment and personnel. For river and sea-crossing bridges, the construction of trestle bridges is often relatively long, and the input of manpower and material resources is relatively large. With the rapid development of expressways and high-speed railways, bridges in water are widely used in highways and railways. How to quickly build convenient bridges is the key The key issue is to ensure the construction period of the bridge. Therefore, choosing a reasonable trestle structure and construction method has become an urgent problem to be solved in the construction of the bridge in the water. In the construction of traditional trestle bridges, the beams and Bailey beams are directly welded. The construction speed is slow, the installation is complicated, and the stability is poor, which seriously affects the construction period of the bridge.

Contents of the invention

The utility model provides a steel pipe pile foundation combined steel trestle bridge for solving the technical problems of slow construction speed, complicated installation and poor stability of the traditional trestle bridge.

The technical scheme that the utility model adopts is as follows:

A composite steel trestle bridge with steel pipe pile foundations, including multiple steel pipe piles, multiple beams, multiple Bailey beams and bridge deck steel plates, the steel pipe piles are arranged in several rows at equal intervals longitudinally along the length of the trestle, and each row is equally spaced horizontally Arrange several steel pipe piles, the lower parts of the steel pipe piles are all driven into the underwater soil, the middle and upper parts of two adjacent steel pipe piles arranged horizontally are fixed by horizontal connecting rods and scissor braces, and the steel pipe piles arranged horizontally The beam is erected on the top, and the Bailey beam is vertically erected on the upper beam of the steel pipe pile. The Bailey beam and the beam are connected by U-shaped iron pieces. railing.

The top of each steel pipe pile is welded with a steel cover plate, and the beam and the steel cover plate are welded together.

The beam is formed by butt welding of I-beams.

Beneficial effects of the utility model: the Bailey beam and the cross beam of the utility model are connected by U-shaped iron parts, which is easy to install and has good stability, improves the construction speed of the trestle bridge, reduces the construction cost, and ensures the safety of the later use process.

Description of drawings

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

Fig. 2 is a side view of the utility model;

In the figure: 1-steel pipe pile, 2-horizontal connecting rod, 3-scissors brace, 4-beam, 5-Berry beam, 6-U-shaped iron piece, 7-deck steel plate, 8-protective railing, 9- Mortar rubble.

Detailed ways

As shown in Figures 1 and 2, a steel pipe pile foundation composite steel trestle bridge includes multiple steel pipe piles 1, multiple beams 4, multiple Bailey beams 5 and deck steel plates 7, and the steel pipe piles 1 are along the length of the trestle. Several rows are arranged at equal intervals in the vertical direction, and several steel pipe piles 1 are arranged at equal intervals in each row. Fixed by the horizontal connecting rod 2 and the scissor brace 3, the top of the horizontally arranged steel pipe pile 1 is erected with a crossbeam 4, and the crossbeam 4 is formed by I-beam butt welding. The Bailey beam 5 is vertically erected on the upper beam 4 of the steel pipe pile 1. The Bailey beam 5 and the beam 4 are connected by U-shaped iron pieces 6. The bridge deck steel plate 7 is laid on the upper part of the Bailey beam 5. Protective railings 8 are arranged in the length direction of the trestle bridge.

In order to ensure the firmness of the welding between the beam and the steel pipe pile, a steel cover plate is welded on the pile top of each steel pipe pile 1, and the beam 4 and the steel cover plate are welded together.

Example 1

A composite steel trestle bridge based on steel pipe piles, with a single span length of 9m and a deck width of 6m. As shown in Figure 1 and 2,

Substructure: φ630mm×8mm steel pipe piles 1 are used to drive into the soil, and the depth of penetration is greater than 16m. The steel pipe piles 1 are arranged in several rows at equal intervals longitudinally along the length of the trestle, and three steel pipe piles 1 are arranged horizontally in each row. The distance between the three steel pipe piles 1 is 2.35m, and the horizontal connecting rods 2 and scissor braces 3 are firmly welded between the piles; the top of the steel pipe piles 1 is welded with a steel cover plate of 650×650cm and δ=10mm, and the steel cover plate and steel The periphery of the top of the pipe pile 1 is fully welded; the top of the horizontally arranged steel pipe pile 1 is arranged with two 6m-long I45 I-steel double beams 4, and the beams 4 are welded together with the steel cover plate.

Superstructure: a single layer of 6 pieces and 3 groups of Bailey sheets (specification: 150cm×300cm) arranged in a 9-meter-span longitudinal beam. See Figure 1 for the horizontal layout. Connect to ensure its overall stability, and the U-shaped iron pieces 6 are used to connect the Bailey sheet and the I-beam beam 4 to prevent sliding.

Deck structure of the trestle bridge: the net width of the bridge deck is 6m, using assembled steel panels, a single panel is 6m long and 1.5m wide, the panels are made of 5.5mm thick printed steel plates, the bottom transverse ribs are made of I25cm I-beam, and the longitudinal spacing of the bottom transverse ribs is 50cm It is set on the Bailey beam, and the printed steel plate is laid on the bottom transverse rib.

Protective railings: protective railings 8 are made of small steel pipes with a diameter of 4.8cm. The height of the protective railings 8 is 1.2 meters. The protective railings 8 are provided with one column at 3 meters along the length of the trestle, and three columns are arranged at equal intervals between adjacent two columns. crossbar.

Claims (3)

1. A composite steel trestle bridge with steel pipe pile foundation, characterized in that it includes multiple steel pipe piles (1), multiple beams (4), multiple Bailey beams (5) and deck steel plates (7), steel Pipe piles (1) are arranged in several rows at equal intervals longitudinally along the length of the trestle, and several steel pipe piles (1) are arranged at equal intervals in each row horizontally. The lower parts of the steel pipe piles (1) are driven into the underwater soil, and the horizontal The middle and upper parts of two adjacent steel pipe piles (1) arranged are fixed by horizontal connecting rods (2) and scissors braces (3), and the top of the horizontally arranged steel pipe piles (1) is erected with a beam (4), a Bailey beam ( 5) Lay vertically on the upper beam (4) of the steel pipe pile (1), the Bailey beam (5) and the beam (4) are connected by U-shaped iron pieces (6), and the bridge deck is laid on the upper part of the Bailey beam (5) Steel plate (7), protective railings (8) are arranged along the length direction of the trestle bridge on both sides of the bridge deck steel plate (7). 2. A composite steel trestle bridge based on steel pipe piles according to claim 1, characterized in that: each steel pipe pile (1) has a steel cover plate welded to the top of the pile, and the beam (4) is welded to the steel cover plate Together. 3. A composite steel trestle bridge based on steel pipe piles according to claim 1, characterized in that: the beam (4) is formed by butt welding of I-beams.