CN209194350U - A kind of continuous lowering system of steel jacket box suitable for the construction of big spacing pile foundation support table - Google Patents

Abstract

The utility model provides a kind of continuous lowering system of steel jacket box suitable for the construction of big spacing pile foundation support table, level is erected with spandrel girder on each pile foundation steel pile casting of cushion cap, spandrel girder both ends are provided with lower template beam, lower template beam is equipped with jack, upper bearing beam is equipped at the top of jack, steel truss is erected between at the top of the upper bearing beam of two steel pile castings, in the two sides of every steel pile casting, it is respectively set two main sunpenders for from bottom to top sequentially passing through spandrel girder, lower template beam and steel truss, is mounted on fixture nut in underlay top surface of the beam and steel truss top surface on main sunpender；The lower end of two auxiliary sunpenders passed through in the middle part of steel truss of setting between two steel pile castings, main sunpender and auxiliary sunpender is fixedly connected with the bottom plate truss of steel jacket box, avoids the deformation of bottom plate truss.

Description

A kind of continuous lowering system of steel jacket box suitable for the construction of big spacing pile foundation support table

Technical field

The utility model belongs to water Bridge technical field of construction, is related to the bearing platform construction of water Bridge, and in particular to one Lower method, system of the kind for the steel jacket box of bearing platform construction.

Background technique

The cushion cap of water Bridge engineering is commonly used large-scale steel jacket box and constructs.It will sink to and hold below steel jacket box on the water Around platform, then the water in casing is drained, provides a water-less environment to bearing platform construction.Steel jacket box decentralization can be used waterborne big Type crane barge, but higher cost, therefore would generally be using discharge technique under steel jacket box entirety multiple spot, if the applicant is in Chinese patent Shen Please number for 201621361639.3, technical solution disclosed in entitled " the continuous lowering system of steel jacket box ", to reduce cost.But Discharge technique is compared with the casing lower section for being suitable for common cushion cap under existing steel jacket box entirety multiple spot, when for large pile spacing bearing platform construction, by Larger in stake spacing, steel jacket box bottom plate truss position stress between stake is larger, and only the sunpender suspention at the top of steel pile casting can not expire Foot construction needs, it is also necessary to which inserting piling assists steel-pipe pile between pile foundation, as the Auxiliary support point of lowering system, leads to work of constructing Sequence is complicated, while also adding the workload that auxiliary steel-pipe pile is pulled out in decentralization after the completion, extends the duration.

Summary of the invention

The purpose of this utility model is that improving discharge technique under current steel jacket box entirety multiple spot, it can guarantee that steel jacket box is transferred When sunpender and steel jacket box bottom plate truss uniform force and meet the requirements, and need to guarantee the continuity of steel jacket box decentralization, make steel bushing Discharge technique has wider applicability under case entirety multiple spot.

The technical solution of the utility model is as follows:

A kind of continuous lowering system of steel jacket box suitable for the construction of big spacing pile foundation support table, in each pile foundation steel pile casting of cushion cap Upper level is erected with spandrel girder, and spandrel girder both ends extend to except steel pile casting side wall, is provided with and holds in spandrel girder both ends horizontal The vertical lower template beam of weight beam, lower template beam are equipped with jack, are equipped with the upper bearing beam parallel with spandrel girder, feature at the top of jack It is: is erected with steel truss between at the top of the upper bearing beam of two steel pile castings, in the two sides of every steel pile casting, is respectively set two The main sunpender of spandrel girder, lower template beam and steel truss is from bottom to top sequentially passed through, in underlay top surface of the beam and type on the main sunpender Steel truss top of support is mounted on nut；Between two steel pile castings, two auxiliary sunpenders passed through in the middle part of steel truss of setting are described auxiliary The upper end of the sunpender nut that is spirally connected is fixed with the steel truss；The lower end of the main sunpender and auxiliary sunpender with the bottom plate of steel jacket box Truss is fixedly connected.

The utility model can be completed big spacing pile foundation support table as supporting point merely with the steel pile casting of pile foundation construction and construct Steel jacket box decentralization, do not increase additional construction operation.It is outstanding by increasing auxiliary sunpender participation steel jacket box between two steel pile castings It hangs, guarantees that steel jacket box bottom plate truss will not deform；Suspention steel truss anti-bending strength is good, and span is big, can weigh again after the completion of construction It is multiple to utilize, while the utility model can achieve the effect that steel jacket box multiple spot is continuously transferred, it is at low cost, have a wide range of application, promotion price Value is high.

Detailed description of the invention

Fig. 1 is the casing lowering system elevation of the utility model；

Fig. 2 is the partial enlarged view in Fig. 1；

Fig. 3 is the casing lowering system side view of the utility model；

Fig. 4 is the partial enlarged view in Fig. 3.

Specific embodiment

As shown in Fig. 1, Fig. 3 and Fig. 2, Fig. 4, it is provided by the utility model it is a kind of suitable for big spacing pile foundation support table construction The continuous lowering system of steel jacket box, level is erected with spandrel girder 2 on each pile foundation steel pile casting 1 of cushion cap, and 2 both ends of spandrel girder extend to Except steel pile casting side wall, the lower template beam 3 vertical with spandrel girder is provided in 2 both ends horizontal of spandrel girder, lower template beam 3 is equipped with very heavy 4 are pushed up, is equipped with the upper bearing beam 5 parallel with spandrel girder at the top of jack 4: being erected with type between 4 top of upper bearing beam of two steel pile castings 1 Steel truss 6 is respectively set two and from bottom to top sequentially passes through spandrel girder 2, lower template beam 3 and fashioned iron in the two sides of every steel pile casting 1 The main sunpender 7 of truss 5 is mounted on nut 8 in underlay top surface of the beam and steel truss top surface on the main sunpender 7；It is protected in two steel Between cylinder 1, setting two pass through the auxiliary sunpender 9 at 6 middle part of steel truss, and the upper end of the auxiliary sunpender 9 passes through nut and fashioned iron purlin Frame 6 is fixed；The lower end of the main sunpender 7 and auxiliary sunpender 9 is fixedly connected with the bottom plate truss of steel jacket box.

The utility model, can be in the opposite two sides of each steel pile casting 1 when it is implemented, to guarantee that spandrel girder firmly installs Bracket 10 is respectively welded on inside and outside wall, flushes the top surface of bracket 10 with the nozzle top edge of steel pile casting, the spandrel girder 2 is taken It is located on the bracket on steel pile casting.

To keep bracket structure secured, can also in the steel pile casting 1 weld horizontal be arranged cylinder inner bracing piece 11, make to weld It is supported on the cylinder inner bracing piece in the bracket bottom on 1 inner wall of steel pile casting.

When the utility model is transferred for steel jacket box, in water after the completion of pile foundation construction, the drilling within the scope of cushion cap is removed Platform, segment steel jacket box welded on the interim platform for lining within the scope of cushion cap it is integral, while in every steel pile casting top opening Interior welds cylinder inner bracing piece welds bracket on the inside and outside wall of steel pile casting top, and spandrel girder, underlay are then successively installed on bracket Beam, jack, upper bearing beam, steel truss are installed main sunpender and are fixed by nut and lower template beam and steel truss, and auxiliary hang is installed Simultaneously the upper end and steel truss are secured with nuts for bar, and main and auxiliary downrod lower end is fixedly connected with steel jacket box bottom plate truss.It is all After the completion of component connection, the interim platform for lining of steel jacket box is removed, steel jacket box is suspended in midair by main and auxiliary sunpender at this time, then carries out steel The decentralization operation of casing, process are as follows: jack jacks slightly upwards, unclamps the nut between main sunpender and lower template beam and upward It twists and rises certain altitude, jack oil return, the nut that steel jacket box is integrally transferred between main sunpender and lower template beam is pressed on lower template beam Then top surface unclamps the nut between main sunpender and steel truss and twists liter certain altitude upwards, then jack oil supply jacks up Steel truss, makes the nut between main sunpender and steel truss be pressed on steel truss top surface, then unclamps again main sunpender under Nut between bearing beam simultaneously twists upwards and rises certain altitude, and jack oil return again transfers steel jacket box, and so circulation is until steel bushing Case is transferred to designed elevation position.

Claims (3)

1. a kind of continuous lowering system of steel jacket box suitable for the construction of big spacing pile foundation support table, on each pile foundation steel pile casting of cushion cap Level is erected with spandrel girder, and spandrel girder both ends extend to except steel pile casting side wall, is provided with and load-bearing in spandrel girder both ends horizontal The vertical lower template beam of beam, lower template beam are equipped with jack, are equipped with the upper bearing beam parallel with spandrel girder at the top of jack, feature exists In: be erected with steel truss between at the top of the upper bearing beam of two steel pile castings, in the two sides of every steel pile casting, be respectively set two by It is lower and on sequentially pass through the main sunpender of spandrel girder, lower template beam and steel truss, in underlay top surface of the beam and fashioned iron on the main sunpender Truss top surface is mounted on nut；Between two steel pile castings, two auxiliary sunpenders passed through in the middle part of steel truss of setting are described auxiliary to hang The upper end of the bar nut that is spirally connected is fixed with the steel truss；Bottom plate purlin of the lower end of the main sunpender and auxiliary sunpender with steel jacket box Frame is fixedly connected.

2. the steel jacket box continuous lowering system according to claim 1 suitable for the construction of big spacing pile foundation support table, feature It is: is respectively welded bracket on the inside and outside wall of the opposite two sides of each steel pile casting, the top surface of the bracket and steel pile casting Nozzle top edge flushes, and the spandrel girder rides upon on the bracket on steel pile casting.

3. the steel jacket box continuous lowering system according to claim 2 suitable for the construction of big spacing pile foundation support table, feature It is: is welded with horizontally disposed cylinder inner bracing piece in the steel pile casting, the bracket bottom support being welded on steel pile casting inner wall On the cylinder inner bracing piece.