Floating bridge

 

(57) Abstract:

The invention relates to a bridge and can be used when aiming for the floating bridges. Floating bridge contains floating support, the superstructure, abutment, ramps, sills installed on the floating structure, and the ledge-anchors on shore. A ramp pivotally connected to the ledge on the floating structure and the coast. Coastal lezhen made wedge-shaped, with the possibility of rearranging and fixing to the ground. 9 Il.

The invention relates to postoperational technique and can be used when aiming for the floating bridges.

The famous floating bridge, containing floating supports, decking and beam transition span (ramp), resting one end on the shore, and the other on the superstructure. The mounting bridge is done using braces and anchors. This bridge allows to take into account variations in water level and time of its seasonal operation unlimited [1]

The disadvantage of this bridge is the presence of a fracture and a large sloping beamed transitional migration in the place of pairing it with part of the river, which complicates the entry of vehicles on the bridge.

The closest second structure mounted with its ends movable ledge, the abutment and a ramp pivotally connected at one end with a movable wedge-shaped Lejeune on the floating structure, the other end pivotally connected to the abutment [2]

A disadvantage of the known construction of the bridge is that the abutment does not have a built-roadway not provide reliable fastening of the bridge, are not allowed bulkheads of the bridge to change the height, as it requires the removal of the superstructure and reinstall the bearings. Changing the height of the bearing during operation of the bridge, which may be required if significant fluctuations in water level, is very difficult.

The objective of the invention is creation of a design that would allow you to securely fasten the bridge and ensure a smooth entry of vehicles on the bridge at any water level fluctuations.

The problem is solved due to the fact that the floating bridge, including floating support, the superstructure mounted with its ends movable ledge, the abutment and a ramp pivotally connected at one end with a movable wedge-shaped Lejeune on the floating structure, and the other end pivotally connected to the abutment, with an abutment made in the form of paristan is in the horizontal plane or close to it, the bottom face has an angle of inclination equal to the angle of inclination of the coast, and provided with a bearing surface, and Lejeune-anchor provided with a device for attaching it to the shore.

In Fig. 1 shows a General view of the floating bridge when the water level is low, and Fig. 2 General view of the floating bridge at high water level; Fig. 3 - terminal part of the floating bridge at low water level, Lejeune-anchor is located in the outer close to the superstructure of the bridge position, the node I in Fig. 1; Fig. 4 the end portion of the floating bridge at high water level, Lejeune-anchor is set and fixed at the approximate span building bridge position, site II in Fig. 2; Fig. 5 is the same, Lejeune-anchor moved toward the coast (from the bridge) and fixed in this position; Fig. 6 Lejeune-anchor, cross section section a-a in Fig. 5; Fig. 7 - lezhen-anchor, top view view B in Fig 4; Fig. 8, the device for fixing Lejeune-anchor to the ground of the shore, site III in Fig. 6; Fig. 9 - joint device for the articulated connection of Lejeune-anchor with apparel, cross section b-b In Fig. 7.

Naplavnye bridge (Fig. 1 and 2) includes floating support in the form of individual pontoons 1 installed and fixed on them span 2 beam structure is ha 3 are of the abutment 4, which are connected pivotally to one end of apparel 5, which other end pivotally connected with Lejeune 6 mounted on the end of the span.

The abutment 4 is made in the form of rolling Lejeune-anchor in the form of a prism, the top face 7 which is horizontal or close to horizontal plane and has an internal roadway, the lower face 8 provided with a bearing surface 9, which has a tilt angle of 10 equal to the angle of inclination of the shore at the site of the bridge, the bottom face is provided with a device 11 for fixing Lejeune-anchor to the ground shore after shifts and install it in a working position in which the angle of inclination of the ramp remains operational.

Device for fixing Lejeune-anchor to the ground of the shore can be performed (Fig. 6 8) in the form of anchor pins 12, hammered through the vertical opening in the guide sleeve 13 mounted on the horizontal bar 14 in the area of the bottom face of the prism of Lejeune-anchor.

Swivel plug connection ramp with lezhen-Aner can be performed, for example, in the form of a single eyelets 15, mounted on the ramp, dual lugs 16, the guide 17 and the horizontal stereoset to navigate soy bridge and take the right position in height depending on the water level in the river 20, providing operational angle of 21 ramp, while Lejeune 6 moves along the span of the structure along the axis of the axle with coil couplers and fixed to span structure locks pin type (not shown).

Work floating bridge is as follows:

When assembling the floating bridge, for example, when water level is low (Fig. 1 and 3), Lejeune-anchor 4 is placed on the prepared area of ground shore 3-axis bridge in as close a condition to span the structure of the bridge so that the tilt angle of 21 ramp was no longer valid, i.e., within operational. Ramps 5 fasten the hinge to the Lejeune-the anchor 4 and Lejeune 6, which moves relative to the superstructure 2 along the axis of the bridge.

At high water level in the river, for example in spring or autumn floods (Fig. 2 and 4), floating support with the superstructure 2 and the ledge 6 float in the upper position, the tilt angle of 21 ramp may be more valid, making it impossible to pass vehicles on the ramp and operation of the bridge will also be impossible. In order to be able to continue the operation of the bridge, produced the goal of the slope 21 of the ramp will be within the allowable value, thus reducing the angle of the ramp is due to the rise of Lejeune-anchor up when the longitudinal slip away from the bridge. After progress in the desired position Lejeune-anchor attached device, such as pins, to the ground of the shore (Fig. 6 8), and Lejeune 6 is fastened with the appropriate fasteners to span the structure of the bridge. The longitudinal slip of Lejeune-anchor 4 may be, for example, ropes hoist transport vehicle or crane. Development of Lejeune 6 on the floating structure is the standard screw couplers (not shown).

The proposed solution allows to increase the seasonal operation of the floating bridge by eliminating large breaks in operation with a significant rise or decline of the water level when the angle of the slope of the ramp is higher than acceptable. Development of Lejeune-anchor for a few hours will ensure maximum inclination of the ramps and operation of the bridge can be continued.

The proposed bridge dramatically reduces the time and complexity of building coastal bearings during Assembly of the axle, so as to laying and fixing of Lejeune-anchor will need a little time (a few hours) as in the original spletne structure mounted with its ends movable ledge, the abutment and a ramp pivotally connected at one end with a movable wedge-shaped Lejeune on the floating structure, and the other end pivotally connected to the abutment, wherein the abutment is made in the form of actuating the wedge Lejeune-anchor, the top face of which has an internal roadway and located in a horizontal plane or close to it, the bottom face has an angle of inclination equal to the angle of inclination of the shore and provided with a bearing surface, and Lejeune-anchor provided with a device for attaching it to the shore.

 

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