CN200949208Y

CN200949208Y - Column type lifting bridge pier

Info

Publication number: CN200949208Y
Application number: CN 200520115542
Authority: CN
Inventors: 项利兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-21
Filing date: 2005-07-21
Publication date: 2007-09-19
Anticipated expiration: 2015-07-21

Abstract

The utility model relates to a column elevation pier which comprises a column pier, a coping and a column cover connected with top of the column pier. The middle of the utility model is provided with a column cavity, and the bottom of the column cavity is tapered. The lower part of the column cavity is filled with sand. The bottom of the column cavity is connected with sand discharging tube and extends outward. An exit of the sand discharging tube is provided with a ball valve and a bolt. A column core which is connected with the bottom of the coping stretches moveably into the column cavity. Anchor eyes are arranged averagely on the outside of the column pier on circle of the column cover along the axial direction. A steel bar connected with the coping is inserted into the anchor eye and fixed on bottom of the column cover by nut. The utility model with a proper design and easy operation meets strength, rigidity and stability of pier structure, adjusts height of the pier and controls height of bridge surface by discharging sand in the column cavity, makes settling amount of the bridge surface consistent with that of the road surface and keeps the road fluent linetype. The utility model can be used in correcting truck jumping caused by infirm groundwork on embankment of two sides of the bridge and sediment of bridge surface.

Description

Pillar lifting bridge pier

Technical field

The utility model relates to a kind of Foundation Design of bridge construction, specifically a kind of pillar lifting bridge pier of the jumping car problem that is used to solve bridge two embankment and bridge floor settlement difference and causes.

Background technology

At present, known columnar pier structure is the Reinforced Concrete Circular Cylinder body of solid integral type, build moulding after the pier heights of roofs can not adjust, sets up the bridge span structure on it and the height of bridge floor and also just can't adjust, and embankment must sedimentation.This has just determined and can't change the bridge floor height by adjusting the lifting bridge pier, to keep bridge floor consistent with the roadbed subsidence amount, has kept the road line style smooth and easy.Existing engineering is the soft soil layer that adopts by in the intensive treatment embankment scope, reduce roadbed subsidence with light road bank stuffing, but this way still can not be eliminated sedimentation fully, can not effectively solve the problem of bumping at bridge-head that sedimentation causes, so, in the road use, also need subsidize the road surface and come repairing road linear, not only maintenance difficult, engineering cost is big, can influence the normal current of road again.And subsidize for twice and still to be in the car state of jumping between the reparation for some time.The jumping car of how administering soft foundation bridge two embankment and bridge floor settlement difference and causing? be the important topic of pendulum in face of this field technology personnel.

Summary of the invention

The utility model purpose is at the defective of above-mentioned prior art and deficiency, for the Foundation Design field of bridge construction provides a kind of pillar lifting bridge pier, change the bridge floor height can adjust the bridge pier height easily, keep bridge floor consistent, keep the road line style smooth and easy with the roadbed subsidence amount.

The technical scheme that its technical problem that solves the utility model adopts is: it comprises stub, bent cap this pillar lifting bridge pier), described and the affixed cylindric column sleeve in stub top, its center offers the post chamber, the bottom in post chamber is coniform, sand is loaded in the bottom in post chamber, outside the bottom in post chamber connects the sediment outflow pipe and extends, ball valve and sediment outflow bolt is housed in the exit of sediment outflow pipe, the post core affixed with bent cap bottom is inserted in the post chamber, with the post chamber movingly.

The diameter of described column sleeve and bent cap is respectively greater than the stub that is fixed in the below and the diameter of post core, on the column sleeve periphery, be positioned at the stub outside and offer uniform anchor hole vertically, the reinforcing bar affixed with bent cap is inserted through anchor hole, and be fastening with the anchoring nut in the column sleeve bottom.

The degree of depth should be greater than 10 centimetres in the post chamber of described post core insertion column sleeve.

The utility model is reasonable in design, technical measures are simple, easy to operate, cost is not high, when satisfying bridge pier structure intensity, rigidity, stability requirement, can regulate the bridge pier height according to roadbed subsidence easily and change the bridge floor height, keep bridge floor consistent with the roadbed subsidence amount, it is smooth and easy to remain the road line style, and it is steadily comfortable to drive a vehicle.Need not seal road traffic when adjusting height.The utility model has reduced the requirement of control Embankment Subsidence amount, need not handle soft soil layer, does not also need to subsidize repairing road linear by top course, has reduced engineering-built and maintenance costs, has improved the engineering result of use.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is a sectional drawing of the present utility model.

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

Fig. 3 is to use the linear road before pillar lifting bridge pier is regulated.

Fig. 4 is to use the linear road after pillar lifting bridge pier is regulated.

Among Fig. 1: 1 bent cap, 2 anchor bars, 3 anchoring nuts, 4 post cores, 5, sediment outflow pipe, 6 ball valves, 7, sediment outflow bolt, 8 post chambeies, 9 anchor holes, 10 column sleeves, 11 anchor plates, 12 stubs, 13 sands.

The specific embodiment

As shown in Figure 1 and Figure 2, stub 12 tops of this pillar lifting bridge pier are connected with the diameter cylindric column sleeve 10 big than stub, and the two available steel concrete is cast in one.Offer post chamber 8 at the center of column sleeve 10.The top in post chamber is cylindrical, and it is coniform that the bottom is, and the bottom in post chamber is filled with sand 13.The bottom of bent cap 1 is connected with the diameter post core 4 little than bent cap, is cast in one on the two available reinforced concrete.Insert in the post chamber 8 post core 4 bottoms, with post chamber 8 movingly, and can axially slide up and down along the post chamber, outside 8 bottoms, post chamber connected sediment outflow pipe 5 and extend, sediment outflow pipe 5 outlet section mounting ball valves 6 were installed sediment outflow bolts 7 in one section sediment outflow pipe 5 outside the ball valve.Be positioned at the stub outside and offer uniform anchor hole 9 vertically on the column sleeve periphery, the anchor bar 2 affixed with bent cap is inserted through anchor hole, and with anchoring nut 3, anchor plate 11 anchor bar 2 is anchored on column sleeve 10 bottom surfaces.Anchor bar is a fining twisted steel.For guaranteeing that the post core is inserted in the stability in the post chamber of column sleeve, the post core inserts section should certain depth, preferably makes the post core insert the degree of depth of section greater than 10 centimetres.

Below in conjunction with description of drawings the utility model operating principle, Fig. 3 is to use the linear road schematic diagram before pillar lifting bridge pier is regulated.When road surface generation sedimentation need be adjusted the bridge floor height, open ball valve 6, regulate sediment outflow bolt 7 toward sediment outflow pipe 5 Way outs, the space between ball valve 6 and the sediment outflow bolt 7 increases, and the sand in the post chamber is under deadweight and pressure effect, flow down and fill the space that increases between ball valve 6 and the sediment outflow bolt 7, sand volume reduces in the post chamber 8, and the sand end face descends, and post core 4 is also along with decline, anchor bar 2 also descends, and anchoring nut 3 unclamps.Close ball valve 6, unload sediment outflow bolt 7, the sand between ball-valve 6 and the sediment outflow bolt 7 is installed onto original position to the sediment outflow bolt.

Tighten anchoring nut

3,2, one sedimentation adjustment processes of the tight anchor bar of anchor finish, and reach shown in Figure 4 with the linear road after the adjusting of pillar lifting bridge pier.As when the settling amount of a sedimentation adjustment process is not enough, can repeat above operation and carry out another sedimentation adjustment process, increase settling amount.After Embankment Subsidence is complete, when no longer needing to regulate the stub height,,, make post core 4 and column sleeve 10 affixed by sediment outflow pipe 5 outlets grouting in post chamber 8 space sealing between column sleeve 10 end faces and bent cap 1 bottom surface, anchor bar 2 and column sleeve 10 are affixed.

In order to make bent cap stressed evenly, the stub Height Adjustment under the same bent cap wants synchronous equivalent to regulate.

Claims

1, a kind of pillar lifting bridge pier, it comprises stub (12), bent cap (1), it is characterized in that described and the affixed cylindric column sleeve (10) in stub top, the center of column sleeve offers post chamber (8), and the bottom in post chamber is coniform, and sand (13) is loaded in the bottom in post chamber, outside the bottom in post chamber connects sediment outflow pipe (5) and extends, ball valve (6) and sediment outflow bolt (7) are housed in the exit of sediment outflow pipe, and the post core (4) affixed with bent cap bottom is inserted in the post chamber (8), with post chamber (8) movingly.

2, pillar lifting bridge pier according to claim 1, the diameter that it is characterized in that described column sleeve and bent cap is respectively greater than the stub that is fixed in the below and the diameter of post core, on the column sleeve periphery, be positioned at the stub outside and offer uniform anchor hole (9) vertically, the anchor bar affixed with bent cap (2) is inserted through anchor hole, and fastening with anchoring nut (3) in the column sleeve bottom.

3, pillar lifting bridge pier according to claim 1 and 2 is characterized in that the degree of depth that described post core (4) inserts in column sleeve (10) the post chamber (8) should be greater than 10 centimetres.