CN204174615U - Diesis shape pretensioning prestressed concrete pile - Google Patents

Abstract

The utility model diesis shape pretensioning prestressed concrete pile, pile body cross-sectional form adopts continuous print diesis structure.The side of stake is groove, and opposite side is tongue, and when splicing between stake with stake, tongue and groove is engaged.Pile concrete adopts strength grade to be not less than the high-strength concrete of C50, the main steel bar stress of stake is the reinforcing bar that longitudinal (length direction along stake) is arranged, principal rod adopts the prestressed reinforcement (PC rod iron for prestressed concrete) of high strength, and adopt pre-tensioning system to have the technology of bonding, ensure the anti-bending strength of pile body.The utility model is with reference to external sheet pile technology, prestress thin wall structure is incorporated in soldier pile, utilize a gear width of plane sheet pile, adopt the way of rectangle deep floor, make diesis cross section likeness in form, thus improve moment of inertia and the rigidity in cross section, when considering construction feasibility, reach the effect such as high-performance, high efficiency of construction, few occupation of land, low input.

Description

Diesis shape pretensioning prestressed concrete pile

Technical field:

The utility model relates to a kind of soldier pile of field of civil engineering, pile body adopts high-strength concrete to make, be main longitudinal reinforcement with prestressing force PC rod iron, pre-tensioning system is adopted to have the prestress application mode of bonding, there is good bending resistance, shear behavior, and light and handy, be easy to construction, gear soil, bank protection, antiskid can be widely used in, enclose the engineering in each fields such as water conservancy, water conservancy project, municipal administration such as covering.This cross section is diesis shape, be equivalent to the ribs adding two rectangles on the basis of concrete flat slab structure, greatly improve rigidity of section, make mechanical property more superior.

Background technology:

In recent years, because of labor cost rise violently and rock material resource, land resources in short supply, bring huge pressure to traditional water conservancy waterway regulation and road slope engineering etc., the social contradications particularly brought because of " removal " and financial cost very outstanding.And old grout barricade often cave in and come down, counterfort retaining wall cost is surging, natural discharging slope cannot be implemented especially, make the safety guarantee of such engineering and implement all to be confronted with numerous difficulties.And the engineering such as regulation, riverside landscape in the white-out of urban waterlogging, interior river course is must needing of Development of China's Urbanization and urban development.

In order to address these problems, the utility model is with reference to external sheet pile technology, prestress thin wall structure is incorporated in soldier pile, utilize a gear width of plane sheet pile, adopt the way of rectangle deep floor, make diesis cross section likeness in form, thus improve moment of inertia and the rigidity in cross section, when considering construction feasibility, making every effort to seeking breakthrough in the comprehensive advantage such as high-performance, high efficiency of construction, few occupation of land, low input, have developed " diesis shape pretensioning prestressed concrete pile ".

Summary of the invention:

For the limitation of existing Related product technology, the utility model provide a kind of strong mechanical performance good looking appearance, can at the prefabricated diesis shape pretensioning prestressed concrete pile of factory's batch, to solve above-described technical problem.

The utility model diesis shape shape pretensioning prestressed concrete pile, is characterized in that: pile body cross-sectional form adopts continuous print diesis structure, has good bending resistance and shear behavior, and many pile arrangements then can be spliced into the deep floor overall structure that continuous print is similar to counterfort retaining wall.The side of stake is groove, and opposite side is tongue, and when splicing between stake with stake, tongue and groove is engaged, and not only can locate but also can ensure the globality between stake.Pile concrete adopts strength grade to be not less than the high-strength concrete of C50, guarantees intact in the constructions such as hammering method or vibration plunging of pile body.The main steel bar stress of stake is the reinforcing bar that longitudinal (length direction along stake) is arranged, principal rod adopts the prestressed reinforcement (PC rod iron for prestressed concrete) of high strength, and adopt pre-tensioning system to have the technology of bonding, ensure the anti-bending strength of pile body.

Above-mentioned stake top in cross section between position have thickened area, pile body thickness of slab strengthen, guarantee construct time can bear machinery clamping and hammering, stake top can also be set if desired and reserve steel plate.Pile top section has sharping and pile top groove, pile top groove enters soil layer to be beneficial to pile top, pile top corner cut is then utilize soil layer to produce the extruding force of horizontal direction to pile body, makes the stake of Hot work in progress close toward the adjacent studs having inserted soil layer, and what ensure between stake and stake is tight.

Above-mentioned pile body has also prepared the distributing bar of vertical and horizontal except prestressed reinforcement, structure muscle can adopt plain bar or hard drawn wire reinforcement, the steel mesh reinforcement of distributing bar welding or colligation one-tenth, is fixed on prestressed reinforcement, guarantees mechanical property and the detailing requiments of pile body in length and breadth.

The feature of the utility model diesis shape pretensioning prestressed concrete pile:

1, employing is spliced into continuous crosswise section form, substantially increases the plane stiffness in cross section, and its transport and construction are also than being easier to.

2, adopt and have the pretensioning prestressed concrete struc form of bonding, ensure that concrete bonding and the mechanics anti-bending strength of stake PC rod iron.

3, adopt the high-strength concrete of more than C50, ensure that the quality of pile body and the feasibility of construction.

4, whole pile one-shot forming, length can adjust arbitrarily by requirement of engineering, does not need on-the-spot pile extension.

Accompanying drawing illustrates:

Fig. 1 is the D structure schematic diagram at the some visual angles of the utility model;

Fig. 2 is the schematic diagram of cross section of the present utility model and wherein a kind of arrangement of reinforcement pattern;

Fig. 3 is positive elevational schematic view of the present utility model;

Schematic top plan view when Fig. 4 is continuous arrangement of the present utility model application;

Positive elevational schematic view when Fig. 5 is continuous arrangement of the present utility model application;

Fig. 6 is tongue and groove splicing schematic diagram between stake of the present utility model;

Wherein, 1, pile body, 2, stake top, 3, pile top, 4, thickened area, stake top, 5, pile top end-grain cutting angle, 6, prestressed reinforcement, 7, longitudinal structure reinforcing bar, 8, transverse structure reinforcing bar.

Detailed description of the invention:

1, die-filling and stretch-draw: punching block is cleaned out, coats release agent, PC rod iron is pressed distributed steel requirement through mould, lock fixed end, PC rod iron is stretching successively and stretching end is locked on stretch-draw dish, outwards promote stretch-draw dish by hydraulic jack, PC rod iron is stretched to prolongation value and the stretching force of regulation, fixes the position of stretch-draw dish afterwards, prevent retraction, fixed form can adopt fixed base or directly fixing on punching block.

2, reinforcing cage is installed: on request distributing bar customized cut-off, curve corresponding shape, then be welded into reinforcing cage, whole reinforcing cage put into punching block, fixes with the colligation of PC rod iron.

3, concreting: by the formula ready-mixed concrete set, by sub-material and material-feeding mechanism, concrete is evenly distributed in mould, the dither (available vibrational pedestal or wall-hanging vibrator) of short arc is carried out while cloth, make concrete even closely knit shaping, upper surface receives light again when concrete starts initial set.

4, maintenance is shaping: after concreting, normality is quiet stops 60 ~ 90 minutes, then entirety carries out stream curing, and adopt atmospheric steam curing to the concrete within C80, temperature controls at 80 ± 10 DEG C, until concrete strength reaches designing requirement.The stream curing of high pressure-temperature then also will be carried out to the concrete of more than C80.

5, form removal is checked and accepted: can unclamp stretch-draw dish after concrete reaches design strength, put a PC rod iron, open punching block, shaping stake is hung out, slice off and polish stake top and the outstanding PC rod iron of pile top, whole pile is checked, repairs, identified, puts in storage afterwards.

The foregoing is only better case study on implementation of the present utility model, all changes of doing according to the utility model the scope of the claims and modification, all belong to the protection domain of this patent.

Claims (3)

1. diesis shape pretensioning prestressed concrete pile, pile body cross-sectional form adopts continuous print diesis structure, many pile arrangements then can be spliced into the deep floor overall structure that continuous print is similar to counterfort retaining wall; The side of stake is groove, and opposite side is tongue, is engaged splicing between stake with stake by tongue and groove; Pile concrete adopts strength grade to be not less than the high-strength concrete of C50; Length direction along stake arranges steel bar stress, and steel bar stress adopts the prestressed reinforcement of high strength, and prestressed reinforcement adopts the reinforcement of concrete PC rod iron.

2. diesis shape pretensioning prestressed concrete pile according to claim 1, is characterized in that: stake top in cross section between position have thickened area, stake top is provided with reserved steel plate; Pile top section has sharping and pile top groove.

3. diesis shape pretensioning prestressed concrete pile according to claim 1, it is characterized in that: the distributing bar being also provided with vertical and horizontal in pile body, distributing bar adopts plain bar or hard drawn wire reinforcement, the distributing bar welding of vertical and horizontal or colligation become steel mesh reinforcement, and steel mesh reinforcement is fixed on prestressed reinforcement.