CN205329551U - Support arrangement for construction of cable support tower crossbeam - Google Patents

Abstract

The utility model provides a supporting device for the construction of a cable tower beam, comprising: a steel corbel, a support, a track beam, a truss device, and a load distribution device, and the steel corbels are respectively fixed on the inner sides of two tower columns , the support is fixed on the steel corbel, the track beam is fixed on the support, the truss device is fixed on the track beam, and the load distribution device is fixed on the top of the truss device for Support pylon beams. Compared with the ground support device, the support device of the utility model has the characteristics of less consumable materials, low cost, short construction period, high safety and stable structure.

Description

Supporting device for cable tower beam construction

technical field

The utility model belongs to the construction field of cable tower beams of suspension bridges, in particular to a supporting device for cable tower beam construction.

Background technique

Suspension bridges are widely used in the field of bridge construction due to their advantages such as strong spanning ability and no impact on navigation under the bridge. The suspension bridge supports the suspension cables through the cable towers. Each cable tower includes two tower columns. In order to maintain the strength and stability of the cable tower, the two tower columns should be connected by a beam, and the beam is set at a certain height of the tower column.

At present, floor supports are generally used in the construction of long-span suspension bridge cable tower beams, such as full hall supports or column supports. The floor support is to use steel pipes and other materials to build supports from the ground up to the beam construction position, build a construction platform and provide a support structure during the construction process. With the increase of the span of the bridge and the increase of the tower height, the erection height of the support will also increase, and the required consumables and construction period will increase accordingly. Therefore, there are many defects in the construction period, safety and economy of the support method. :

1. The bracket erection period is long, which affects the construction period;

2. As the height of the tower increases, the position of the beam increases, the height of the bracket increases accordingly, and the risk of construction safety increases;

Especially when the bridge is located in areas with poor foundation geological conditions and deep water levels, it is more difficult and risky to erect floor-to-ceiling steel pipe supports.

With the increasingly widespread application of suspension bridges, a new type of support structure is urgently needed to meet the construction of beams.

Utility model content

The purpose of this utility model is to provide a new type of supporting device for the construction of the cable tower beam, which is used to solve the above technical problems.

In order to solve the above technical problems, the utility model provides a supporting device for the construction of the cable tower beam, including: steel corbels, supports, track beams, truss devices, and load distribution devices;

The steel corbels are respectively fixed on the inner side of the two tower columns, the support is fixed on the steel corbel, the track beam is fixed on the support, the truss device is fixed on the track beam, and the The above load distribution device is fixed on the top of the truss device and is used to support the beam of the cable tower.

Further, the steel corbels are respectively fixed in the reserved shear grooves inside the two tower columns.

Further, the steel corbel adopts a straight type rigid corbel,

Further, the truss device comprises multiple sets of truss units spliced together, the horizontally adjacent truss units are connected by vertical and oblique rods, and the vertically adjacent truss units are connected by scissor braces. connect.

Further, the cross-sectional shape of the truss device in the transverse bridge direction is a regular trapezoid.

Further, the truss unit includes two trusses connected by angle steel.

Further, the distance between the centers of the two trusses of the truss units located in the middle group is 1.6-2.4m, and the distance between the centers of the two trusses of the truss units located on both sides is 0.7-1m.

Further, the load distribution device is laid on the top and two shoulders of the regular trapezoidal truss.

Further, the load distribution device includes distribution beams, square wood and bamboo plywood sequentially connected from bottom to top, and the distribution beams are fixed on the top of the truss device.

Further, the distribution beam is an I-shaped beam.

By adopting the above-mentioned technical scheme, the technical effects produced by the support device for the cable tower beam construction provided by the utility model are as follows:

(1) cost saving

During the construction of the support device of the utility model, the construction turnover materials only need to consider the steel corbels, bearings, track beams, truss devices, etc. used for construction operations, and with the increase of bridge span and tower height, consumption The amount of steel and construction costs increase very little.

(2) Shorten the construction period

The ground support construction device needs to be erected from the ground, especially for areas with poor geological conditions (such as soft soil foundations, etc.), it is also necessary to carry out foundation treatment construction in the early stage, and the construction period is long. The supporting device of the utility model well avoids the above-mentioned problems, and can greatly save construction time.

(3) Strong construction safety

The use of floor support construction devices requires the erection of a high-altitude large-scale support structure system of tens of meters or even hundreds of meters, which has very high requirements for the stability and safety of the structure. During the construction process, the high-altitude operation takes a long time and many cross operations . For beam construction in areas with adverse geological conditions or deep water areas, there are still problems such as construction structure safety risks caused by adverse geological conditions. Since the supporting device of the present invention cancels the erection of self-floor supports and has high overall strength, the above-mentioned construction safety risks and hidden dangers are largely reduced.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is the structural representation of the supporting device of cable tower beam construction;

Fig. 2 is the A-A direction sectional view of Fig. 1;

Fig. 3 is the partial enlarged view I among Fig. 1;

Fig. 4 is a partially enlarged view J in Fig. 1;

in:

1-pillar; 2-steel corbel; 3-support;

4-track beam; 5-truss device; 6-cable tower beam;

7-distribution beam; 8-square wood; 9-bamboo plywood;

51-truss unit; 52-vertical member; 53-oblique member;

54-scissors brace; 511-truss.

detailed description

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

This embodiment takes the "construction of cable pylon beams of the Ma Changjiang Bridge" on the currently constructed Chongqing Wanzhou-Hubei Lichuan Expressway (Chongqing section) as an example to specifically illustrate that the bridge structure is a large suspension bridge, and the suspension bridge supports the suspension cables through the cable pylons. , each cable tower includes two tower columns, in order to maintain the strength and stability of the cable tower, the two tower columns should be connected into one body by a beam, and the beam is set at a certain height of the tower column.

At present, floor supports are generally used in the construction of long-span suspension bridge cable tower beams, such as full hall supports or column supports. The floor support is to use steel pipes and other materials to build supports from the ground up to the beam construction position, build a construction platform and provide a support structure during the construction process.

For long-span bridges, the height of the tower increases, and the height of the support also increases, and the required consumables and construction period increase accordingly. Using the above-mentioned existing support structure requires the erection of a large-height support truss, which not only requires a large amount of steel, but also increases the construction period. Moreover, the height of the frame body is large, the overall stability is poor, there are potential safety hazards for construction, and the construction period is long, and there are also defects in economy. Therefore, the utility model provides a novel support device for the construction of the cable tower beam, in order to solve the above-mentioned defects.

As shown in Figure 1, it is a structural schematic diagram of the supporting device for the construction of the cable tower beam provided by the utility model;

The supporting device for cable tower beam construction provided by the utility model includes:

A steel corbel 2, a support 3, a track beam 4, a truss device 5 and a load distribution device arranged between the two tower columns 1 of the cable tower;

Referring to Figures 1 to 3, the steel corbels 2 are respectively fixed on the inner sides of the two tower columns 1;

The steel corbel 2 is a straight plate steel corbel, and shear grooves are reserved at corresponding positions inside the two tower columns 1, and the steel corbels 2 are respectively fixed in the reserved shear grooves inside the two tower columns 1.

The support 3 adopts a shaped steel support, which is fixed on the top of the steel corbel 2 and used to support the track beam 4 .

The track beam 4 is fixed on the support 3 , and the track beam 4 is used to support the truss device 5 .

The truss device 5 is fixedly mounted on the track beam 4 as a load transfer structure in the middle section.

The load distribution device is fixed on the top of the truss device 5 for bearing the pressure of the pylon beam 6 .

Referring to Fig. 2, the truss device 5 is formed by splicing multiple groups of truss units 51; in this embodiment, the truss device 5 is formed by splicing a total of six truss units 51 on upper and lower layers;

Wherein, each truss unit 51 includes two trusses 511 arranged in parallel, and the two trusses 511 are connected by horizontal and vertical angle steels to form a cubic unit.

In this embodiment, the center distance between the two trusses 511 of the truss unit 51 in the middle group is 1.6-2.4m, preferably set to 2m, and the center distance between the two trusses 511 of the truss units 51 on both sides is 0.7-2.4m. 1m, preferably set to 0.9m.

During installation, the truss units 51 of the middle group and the truss units 51 on both sides are fixedly connected in the horizontal direction through vertical rods 52 and oblique rods 53, respectively, and scissors are used between the adjacent truss units 51 in the vertical direction. The struts 54 are connected. The above-mentioned connection structure is adopted between the truss units 51 to ensure a high supporting strength.

The cross-sectional shape of the truss device 5 in the transverse bridge direction is a regular trapezoid, and the top of the regular trapezoidal truss device corresponds to the chamfered shape of the lower part of the cable tower beam 6 .

The load distribution device in this embodiment is laid on the top and two shoulders of the regular trapezoidal truss device 5 .

Referring to Fig. 4, the load distribution device includes a distribution beam 7, a square wood 8 and a bamboo plywood 9 sequentially connected from bottom to top;

The distribution beam 7 is fixed on the top of the truss device 5, and the distribution beam 7 is an I-shaped beam.

The installation method of the supporting device of the cable tower beam construction of the present embodiment is illustrated below, specifically comprises the following steps:

S10. Lay the platform at the preset position on the tower column, and then install the corbel, support and track beam in sequence;

S20. hoisting the truss unit of the middle lower floor to the track beam;

S30. hoisting the truss unit of the middle upper floor to the upper part of the truss unit of the lower floor, and connecting the two groups of truss units in the vertical direction with scissors braces;

S40. Pushing the upper and lower truss units in the middle to the preset position in the middle of the track beam;

S50. Hoist the lower truss units on one side of the upper and lower truss units in the middle into place, and then carry out the vertical rods and oblique rods on the middle group of truss units and the lower truss units on one side in the horizontal direction, respectively. fixed connection;

S60. hoisting the upper truss unit on one side of the upper and lower truss units in the middle; then connecting the upper truss unit to the lower and adjacent middle truss units respectively;

S70. Hoist the lower truss unit on the other side of the middle upper and lower truss units in place; then pass the vertical rods and oblique rods in the horizontal direction to the middle group of truss units and the lower truss units on the other side Make a fixed connection respectively;

S80. Hoisting the upper truss unit on the other side of the upper and lower truss units in the middle; then connecting the upper truss unit with the lower and adjacent middle truss units respectively;

S90. Lay distribution beams, square timber and bamboo plywood in sequence on the top of the installed truss device.

The method for removing the supporting device of the cable tower beam construction of the present embodiment specifically includes the following steps:

S10'. Cut off the welding relationship between the support, the lower track beam, and the steel corbel to separate the three;

S20'. Take out the bamboo plywood, square timber and distribution beam in sequence;

S30'. cutting and removing the horizontal connectors of each truss unit in the truss device;

S40'. Translate each separated truss unit beyond the upper beam;

S50'. cutting the connecting piece between the upper and lower truss units;

S60’. Lift each truss unit to the ground one by one, and add support to prevent the truss unit from tipping over;

S70'. Remove track beams, corbels and operating platforms in sequence.

The support device for the construction of the cable tower beam provided by the utility model solves the problem that in the prior art, for large-span bridges, the ground bracket is generally used, and steel pipes and other materials are used to erect the bracket from the ground up until the beam construction position. The height is large, the required consumables and the construction period are increased, and the stability of the beam carrier is too high, which brings about poor stability and technical problems that pose safety hazards to the construction.

The beneficial effects that the utility model possesses are:

(1) cost saving

During the construction of the support device of the utility model, the construction turnover materials only need to consider the steel corbels, bearings, track beams, truss devices, etc. used for construction operations, and with the increase of bridge span and tower height, consumption The quantity of steel products and construction cost increase very little.

(2) Shorten the construction period

The ground support construction device needs to be erected from the ground, especially for areas with poor geological conditions (such as soft soil foundations, etc.), it is also necessary to carry out foundation treatment construction in the early stage, and the construction period is long. The supporting device of the utility model well avoids the above-mentioned problems, and can greatly save construction time.

(3) Strong construction safety

The use of floor support construction devices requires the erection of a high-altitude large-scale support structure system of tens of meters or even hundreds of meters, which has very high requirements for the stability and safety of the structure. During the construction process, the high-altitude operation takes a long time and many cross operations . For beam construction in areas with adverse geological conditions or deep water areas, there are still problems such as construction structure safety risks caused by adverse geological conditions. Since the support device of the present invention cancels the erection of the self-floor support, the above-mentioned construction safety risks and hidden dangers are largely reduced.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the embodiments of the present utility model Scope of technical solutions.

Claims (10)

1. a support arrangement of a Sarasota construction of beam, it is characterized in that, including: steel corbel, bearing, track girder, girder device and load distributor, described steel corbel is packed in the inner side of two king-posts respectively, described bearing is packed on steel corbel, and described track girder is packed on bearing, and described girder device is packed on track girder, described load distribution device is packed in the top of girder device, is used for supporting Sarasota crossbeam。

2. a support arrangement of Sarasota construction of beam according to claim 1, it is characterised in that: described steel corbel is packed in shearing groove reserved inside two king-posts respectively。

3. a support arrangement of Sarasota construction of beam according to claim 2, it is characterised in that: steel corbel adopts the firm bracket of board-type。

4. a support arrangement of Sarasota construction of beam according to claim 1, it is characterized in that: described girder device includes many group truss elements and is spliced, it is attached by vertical member and oblique rod member between the truss element that horizontal direction is adjacent, between the truss element that vertical direction is adjacent, adopts shears strut to be attached。

5. a support arrangement of Sarasota construction of beam according to claim 4, it is characterised in that: the section configuration of described girder device direction across bridge is trapezoid。

6. a support arrangement of Sarasota construction of beam according to claim 4, it is characterised in that: described truss element includes the two panels truss by Bolted angle connection。

7. the support arrangement of Sarasota construction of beam according to claim 4, it is characterised in that: the two panels of the truss element of centrally located group frame centre-to-centre spacing of spreading out is 1.6-2.4m, and being positioned at the two panels of the truss element of both sides frame centre-to-centre spacing of spreading out is 0.7-1m。

8. a support arrangement of Sarasota construction of beam according to claim 5, it is characterised in that: described load distributor is laid on truss top and two shoulders of trapezoid。

9. a support arrangement of Sarasota construction of beam according to claim 8, it is characterised in that: described load distributor includes the distribution beam, the lumps of wood and the bamboo slab rubber that are sequentially connected with from bottom to top, and described distribution beam is packed in girder device top。

10. a support arrangement of Sarasota construction of beam according to claim 9, it is characterised in that: described distribution beam is i-shaped beams。