CN114635362A - Cantilever type beam lifting station for beam slab erection and method for hoisting beam lifting station to bridge - Google Patents

Abstract

The invention discloses a cantilever type beam lifting station for erecting a beam slab, which is used for hoisting and erecting the beam slab on a bridge and comprises a supporting component and an overhead traveling crane component, wherein the supporting component comprises a first side steel pipe upright and a second side steel pipe upright, the overhead traveling crane component comprises a self-propelled overhead traveling crane beam and a winch moving along the self-propelled overhead traveling crane beam, and the upper parts of the first side steel pipe upright and the second side steel pipe upright are fixedly connected with the self-propelled overhead traveling crane beam. Adopt supporting component, the cooperation of overhead traveling crane subassembly is hoisted, I-shaped beam bridge limit hoist and mount has been realized, it is more high-efficient to make hoist and mount, it is more swift, it is more convenient, need not to carry out high stand construction outside the bridge limit line, the risk of high altitude construction has been reduced, only need prefabricated decking and below fortune roof beam passageway can install, reduce bridge sideline outside place restriction influence, the construction degree of difficulty has been reduced, be favorable to the equipment multiple spot to put in, improve hanging beam efficiency of construction, the lifting beam station simple structure, the installation and demolish the degree of difficulty and significantly reduce, the turnover efficiency is high.

Description

Cantilever beam lifting station for beam plate erection and method for hoisting on bridge

technical field

The invention relates to the field of bridge construction, in particular to a cantilever beam-lifting station for beam-slab erection and a method for hoisting and hoisting a bridge.

Background technique

At present, the upper structure of the viaduct adopts the prestressed concrete I-beam, the bridge deck is continuous, and the bridge erection machine is mainly used for the overall lifting construction.

However, the traditional beam lifting station designed as a high and low leg gantry crane has the following disadvantages:

1. The steel pipe column is relatively high, there are certain safety hazards in high-altitude operation, and the structural safety performance requirements of the bracket are relatively high, making it inconvenient to hoist;

2. The installation site requirements are relatively high. The beam-lifting station needs to pour a flat and open site outside the bridge to expand the foundation, and the bearing capacity of the foundation needs to meet the requirements of the scheme;

3. The installation process of the traditional high and low leg beam lifting station also involves soil compaction, spiral pipe piles, expansion of foundation construction, etc., and the installation preparation work is much and time-consuming;

4. It is inconvenient to dismantle the beam lifting station;

5. It is not suitable for the safety and convenience of the current bridge construction.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a cantilevered beam lifting station for beam plate erection and a method for hoisting the bridge, which can solve the problem of inconvenient hoisting.

One of the objects of the present invention adopts the following technical scheme to realize:

A cantilever beam-lifting station for beam-slab erection, used for hoisting and erecting beam-slabs on a bridge, includes a support assembly and a crane assembly, the support assembly includes a first side steel pipe column, a steel pipe column opposite to the first side steel column. The second side steel pipe column, the first side steel pipe column is located in the bridge, the first side steel pipe column is provided with a side auxiliary support, and the side auxiliary support includes auxiliary inclined rods and several auxiliary cross rods, so The two ends of the auxiliary inclined rod are respectively hinged with the lower part of the crane assembly and the lower part of the first side steel pipe column, and the two ends of the auxiliary cross rod are respectively connected with the first side steel pipe column and the auxiliary inclined steel column. The rod is hinged, and the auxiliary cross rod is in a horizontal state; the crane assembly includes a self-propelled crane beam and a hoist that moves along the self-propelled crane beam. The self-propelled crane beam is fixedly connected.

Further, the extension direction of the first side steel pipe column is parallel to the extension direction of the second side steel pipe column.

Further, the extension direction of the first side steel pipe column is perpendicular to the extension direction of the self-propelled crane beam.

Further, the cantilevered beam lifting station for beam plate erection includes a first beam lifting station and a second beam lifting station, and the first beam lifting station and the second beam lifting station are distributed on both sides of the beam plate to be hoisted; the The cantilever beam lifting station used for beam plate erection also includes an I-beam transport vehicle arranged on the bridge.

Further, the auxiliary inclined rods, the auxiliary cross rods, and the first side steel pipe uprights are distributed in a right-angled triangle.

Further, the auxiliary inclined rod is at 15°-20° with the first side steel pipe upright.

Further, the auxiliary inclined rod and the first side steel pipe column are at 18°.

Further, the auxiliary inclined rods, auxiliary cross rods, and self-propelled crane beams are distributed in a right-angled triangle.

A method for hoisting a bridge on a cantilevered beam-lifting station for beam-slab erection, comprising the following steps:

Preparation steps: The beam transporter transports the I-beam to the sideline of the bridge 2-3m, and the beam transporter is parked on the bridge deck under the outer cantilever to wait for loading;

Inspection steps: Trial operation of the lifting crane, check the brake of the crane, the wear of the wire rope, the anchoring and locking conditions, and the conditions of each safety switch. After confirming that there is no abnormality, the lifting can be started;

Lifting steps: open the two cranes to the cantilever at the same time, when the lifting center of the two hoists is close to the I-beam lifting point, slow down and approach at a slow speed until it overlaps with the I-beam lifting point. hook;

Hoisting steps: After hanging the rope, the crane slowly hoisted the I-beam to the bridge deck, and moved the I-beam laterally along the inside of the bridge to place the I-beam on the bridge deck girder truck.

Further, in the hoisting step, after hanging the rope, first slowly lift the I-beam for 10mm and stand still for 2 minutes, observe the operation of the crane, and then slowly hoist the I-beam to the bridge deck only if the crane runs abnormally.

Compared with the prior art, the beneficial effects of the present invention are:

Both ends of the auxiliary inclined rod are hinged with the lower part of the crane assembly and the lower part of the first side steel pipe column, respectively, and the two ends of the auxiliary cross rod are respectively connected with the first side steel pipe column and the auxiliary steel pipe column. The inclined rod is hinged, and the auxiliary cross rod is in a horizontal state; the crane assembly includes a self-propelled crane beam, a hoist moving along the self-propelled crane beam, the upper part of the first side steel pipe column and the second side steel pipe column It is fixedly connected with the self-propelled crane beam. The supporting components and the crane components are used for hoisting, which realizes the hoisting of the I-beam bridge side, making the hoisting more efficient, faster and more convenient, without the need for high column construction outside the bridge side line, reducing the risk of high-altitude operations. It can be installed only with a prefabricated bridge deck and a beam transport channel below, which reduces the influence of site constraints on the outside of the bridge side line, reduces the construction difficulty, is conducive to the multi-point placement of equipment, and improves the construction efficiency of the lifting beam. The beam lifting station has a simple structure and is difficult to install and remove. Greatly reduced, high turnover efficiency.

The above description is only an overview of the technical solution of the present invention, in order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present invention more obvious and easy to understand , the following specific preferred embodiments, and in conjunction with the accompanying drawings, are described in detail as follows.

Description of drawings

1 is a schematic diagram of a preferred embodiment of the cantilever beam lifting station used for beam plate erection according to the present invention;

Fig. 2 is the side view of the cantilevered beam lifting station for beam plate erection shown in Fig. 1;

Fig. 3 is the top view of the cantilevered beam lifting station for beam plate erection shown in Fig. 1;

FIG. 4 is a flow chart of a method for hoisting a bridge on a cantilevered beam-lifting station for beam-slab erection.

In the figure: 100, the first beam lifting station; 200, the second beam lifting station; 10, the support assembly; 11, the first side steel pipe column; 12, the second side steel pipe column; 13, the side auxiliary support; 131, the auxiliary inclined rod ; 132, auxiliary cross bar; 20, crane assembly; 21, self-propelled crane beam; 22, winch; 30, I-beam transport vehicle; 300, beam plate.

Detailed ways

Hereinafter, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments. .

It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a co-existence of an intervening component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a co-existing centered component. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIGS. 1-4 , a cantilever beam lifting station for beam plate erection, used for hoisting and erecting beam plate 300 on a bridge, includes a support assembly 10 and a crane assembly 20, the support assembly 10 includes a first side The steel pipe column 11 and the second side steel pipe column 12 opposite to the first side steel pipe column 11, the first side steel pipe column 11 is located in the bridge, and the first side steel pipe column 11 is provided with a side auxiliary support 13, so The side auxiliary support 13 includes auxiliary inclined rods 131 and several auxiliary cross rods 132. Both ends of the auxiliary inclined rods 131 are hinged with the lower part of the crane assembly 20 and the lower part of the first side steel pipe column 11 respectively. , the two ends of the auxiliary cross bar 132 are hinged with the first side steel pipe column 11 and the auxiliary inclined bar 131 respectively, and the auxiliary cross bar 132 is in a horizontal state; the crane assembly 20 includes a self-propelled crane The beam 21 , the hoist 22 moving along the self-propelled crane beam 21 , the upper parts of the first side steel pipe column 11 and the second side steel pipe column 12 are fixedly connected with the self-propelled crane beam 21 . The supporting assembly 10 and the crane assembly 20 are used for hoisting, realizing the hoisting of the I-beam bridge side, making the hoisting more efficient, faster and more convenient, without the need for high column construction outside the bridge side line, reducing the need for high-altitude operations. Risk, it can be installed only with prefabricated bridge deck and the lower beam transport channel, which reduces the influence of site constraints on the outside of the bridge side line, reduces the construction difficulty, is conducive to the multi-point placement of equipment, and improves the construction efficiency of the lifting beam. The beam lifting station has a simple structure and is easy to install. The difficulty of dismantling is greatly reduced, and the turnover efficiency is high.

Specifically, Ф426×10mm steel pipe piles are used for the steel pipe columns of the beam-lifting station. All Ф426×10mm steel pipe piles are located on the bridge deck and are supported by steel foundations. m, before the risers of the adjacent bridge decks at the beam-lifting station are completed, the top surface of each row of longitudinal piles of the steel pipe support frame on both sides of the beam-lifting station is made of double-joint I30a I-beam as the cushion beam, and the load-bearing truss is arranged on the cushion beam. The beam must be welded firmly to the truss and the top of the pipe pile. The beam lifting station is in a fixed form. In order to adapt to the hoisting of the 25-40m beam section of this project, the 25m, 30m and 40m beam sections are hoisted with special hangers in conjunction with the beam lifting station. The hoisting crane is mainly composed of self-propelled crane girder and hoist, the bridge deck hoisting clearance height is ≥7m, and the designed lifting capacity of a single girder station is 60T.

Preferably, the extending direction of the first side steel pipe column 11 is parallel to the extending direction of the second side steel pipe column 12 . The extension direction of the first side steel pipe column 11 is perpendicular to the extension direction of the self-propelled crane beam 21 .

Preferably, the cantilevered beam lifting station for beam plate erection includes a first beam lifting station 100 and a second beam lifting station 200, and the first beam lifting station 100 and the second beam lifting station 200 are distributed on the beam plate 300 to be hoisted. Both sides; the cantilevered beam lifting station for beam plate erection also includes an I-beam transport vehicle 30 arranged on the bridge. The whole device has novel structure, ingenious design, strong applicability and easy promotion.

Preferably, the auxiliary inclined rods 131, the auxiliary cross rods 132, and the first side steel pipe uprights 11 are distributed in a right-angled triangle. The auxiliary inclined rod 131 and the first side steel pipe column 11 are at 15°-20°. Specifically, the auxiliary inclined rod 131 and the first side steel pipe column 11 are at 18°. The auxiliary inclined rods 131, the auxiliary cross rods 132, and the self-propelled crane beam 21 are distributed in a right-angled triangle.

A method for hoisting a bridge on a cantilevered beam-lifting station for beam-slab erection, comprising the following steps:

Preparation steps: The beam transporter transports the I-beam to the sideline of the bridge 2-3m, and the beam transporter is parked on the bridge deck under the outer cantilever to wait for loading;

Inspection steps: Trial operation of the lifting crane, check the brake of the crane, the wear of the wire rope, the anchoring and locking conditions, and the conditions of each safety switch. After confirming that there is no abnormality, the lifting can be started;

Lifting steps: open the two cranes to the cantilever at the same time, when the lifting center of the two hoists is close to the I-beam lifting point, slow down and approach at a slow speed until it overlaps with the I-beam lifting point. hook;

Hoisting steps: After hanging the rope, the crane slowly hoisted the I-beam to the bridge deck, and moved the I-beam laterally along the inside of the bridge to place the I-beam on the bridge deck girder truck. Preferably, in the hoisting step, after the ropes are hung up, the I-beam is slowly hoisted for 10 mm and kept for 2 minutes, and the operation of the crane is observed. The I-beam can be slowly hoisted to the bridge deck only when the crane is running normally.

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims (10)

1. a cantilevered beam-lifting station for beam plate erection, for hoisting and erecting beam plate on a bridge, comprising support assembly, crane assembly, it is characterized in that: The support assembly includes a first side steel pipe column and a second side steel pipe column opposite to the first side steel pipe column, the first side steel pipe column is located in the bridge, and the first side steel pipe column is provided with a side auxiliary support , the side auxiliary support includes auxiliary inclined rods and several auxiliary transverse rods, two ends of the auxiliary inclined rods are respectively hinged with the lower part of the crane assembly and the lower part of the first side steel pipe column. Both ends of the cross bar are respectively hinged with the first side steel pipe column and the auxiliary inclined bar, and the auxiliary cross bar is in a horizontal state; The crane assembly includes a self-propelled crane beam and a hoist that moves along the self-propelled crane beam. The upper parts of the first side steel pipe column and the second side steel pipe column are fixedly connected to the self-propelled crane beam. 2 . The cantilever beam lifting station for beam plate erection according to claim 1 , wherein the extension direction of the first side steel pipe column is parallel to the extension direction of the second side steel pipe column. 3 . 3 . The cantilever beam lifting station for beam plate erection according to claim 1 , wherein the extension direction of the first side steel pipe column is perpendicular to the extension direction of the self-propelled crane beam. 4 . 4. The cantilevered beam-lifting station for beam-slab erection according to claim 1, wherein the cantilevered beam-lifting station for beam-slab erection comprises a first beam-lifting station and a second beam-lifting station, the first beam-lifting station The first beam lifting station and the second beam lifting station are distributed on both sides of the beam plate to be hoisted; the cantilever beam lifting station for beam plate erection also includes an I-beam transport vehicle arranged on the bridge. 5 . The cantilever beam lifting station for beam plate erection according to claim 1 , wherein the auxiliary inclined rods, the auxiliary cross rods and the first side steel pipe uprights are distributed in a right triangle. 6 . 6 . The cantilever beam lifting station for beam plate erection according to claim 5 , wherein the auxiliary inclined rod and the first side steel pipe upright are at an angle of 15°-20°. 7 . 7 . The cantilever beam lifting station for beam plate erection according to claim 6 , wherein the auxiliary inclined rod and the first side steel pipe column are at 18°. 8 . 8 . The cantilever beam lifting station for beam plate erection according to claim 1 , wherein the auxiliary inclined rods, the auxiliary cross rods, and the self-propelled crane beams are distributed in a right-angled triangle. 9 . 9. A method for hoisting and hoisting a bridge for a cantilevered beam-lifting station for beam-slab erection according to any one of claims 1-8, characterized in that, comprising the following steps: Preparation steps: The beam transporter transports the I-beam to the sideline of the bridge 2-3m, and the beam transporter is parked on the bridge deck under the outer cantilever to wait for loading; Inspection steps: Trial operation of the lifting crane, check the brake of the crane, the wear of the wire rope, the anchoring and locking conditions, and the conditions of each safety switch. After confirming that there is no abnormality, the lifting can be started; Lifting steps: open the two cranes to the cantilever at the same time, when the lifting center of the two hoists is close to the I-beam lifting point, slow down and approach at a slow speed until it overlaps with the I-beam lifting point. hook; Hoisting steps: After hanging the rope, the crane slowly hoisted the I-beam to the bridge deck, and moved the I-beam laterally along the inside of the bridge to place the I-beam on the bridge deck girder truck. 10. The method for hoisting a bridge as claimed in claim 9, characterized in that: in the hoisting step, after hanging the rope, first slowly test the I-beam for 10mm and stand still for 2 minutes, observe the operation of the crane, and the crane Only when there is no abnormality in operation, the I-beam can be slowly lifted to the bridge deck.

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