CN2126862Y

CN2126862Y - Flush bonding prestressed concrete steel wire bundle anchor

Info

Publication number: CN2126862Y
Application number: CN 92217009
Authority: CN
Inventors: 任华国
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-02
Filing date: 1992-06-02
Publication date: 1993-02-10
Anticipated expiration: 2002-06-02

Abstract

The utility model relates to a flush bonding prestressed concrete steel wire bundle anchor. The whole anchor is composed of an anchor plate (4), a clamp plate (17), a shield (12), a shield cover (13), steel nails (3) and a the bottom die (2) of an auxiliary member. Compared with the existing anchors, the utility model eliminates exposed anchors after the completion of masonry, the anchors and steel wire bundles are prevented from corrosion, and the construction procedure for treating the exposed anchors is eliminated.

Description

Flush bonding prestressed concrete steel wire bundle anchor

The utility model belongs to prestress concrete construction ground tackle field.

At present prestress concrete construction post stretching is to be embedded in the concrete in that steel tendon is given, install the steel tendon ground tackle after, apply and give stress, with ground tackle folder metal plate steel tendon is compressed again.But used ground tackle has two major defects, and first ground tackle is beyond body of masonry, and ground tackle is chewed and exposed to beyond the body of masonry, not only will deal with but also influence attractive in appearance in addition, and it two is after cutting off steel tendon, and the steel tendon broken end is outer to expose outside, corrosion-vulnerable, infringement steel wire.

At this shortcoming, the design uses a kind of new ground tackle, and this ground tackle is embedded in the concrete masonry in after construction, and has set up protective cover protection steel tendon and do not corroded.In order to reach this two purposes, contain a mold bed die in the design's the ground tackle so that be embedded among the concrete masonry in the mould energy, design has protective cover to be subjected to carving erosion to prevent steel tendon again in addition.

Details are as follows in conjunction with the accompanying drawings for the design, wherein:

Fig. 1 is an anchor metal plate schematic top plan view;

Fig. 2 is the A-A section of Fig. 1;

Fig. 3 is the bed die schematic top plan view;

Fig. 4 is the A-A section of Fig. 3;

Fig. 5 is the protective cover schematic top plan view;

Fig. 6 is the A-A section of Fig. 5;

Fig. 7 is protection cover cap schematic top plan view;

Fig. 8 is Fig. 7 A-A section;

Fig. 9 is ground tackle (comprising anchor metal plate and bed die) scheme of installation before the fluid concrete;

Figure 10 is a complete set of ground tackle schematic diagram in construction back;

Figure 11 is for after having ground tackle completion now, and ground tackle and steel tendon expose schematic diagram;

Figure 12 is folder metal plate schematic diagram.

The design's ground tackle comprises following parts: anchor metal plate (4), steel nail (3), folder metal plate (17), protective cover (12) and protection cover cap (13) and installation when construction, the auxiliary anchor metal plate bed die (2) that folding removes after completion.Anchor metal plate (4) (seeing Fig. 1 and Fig. 2) is a steel part, base plate both wings at it have two nail holes (5), can supply steel nail (3) and concrete blinding (1) to link, base plate one end has a circle flange (7), the external diameter coupling of internal diameter of this flange (7) and protective cover (14) lower end, with supporting installation, the other end of base plate is that the anchor metal plate that the centre can allow steel tendon (16) pass is chewed (21), can chew (21) at the anchor metal plate and squeeze into folder metal plate (17) with binding in wire bundle (16) after the steel tendon applied stress.Bed die (2) (seeing Fig. 3 and Fig. 4) is the mould of a circle, its upper end is one and chews (8) before conical, the lower end is one and chews (9) after columnar, Qian Zui communicates with Hou Zui, the centre is a bed die steel wire beam hole (6), and preceding profile of chewing must be complementary with the cavity shape of the steel wire beam hole (18) of anchor metal plate, chew (8) before being convenient to and insert anchor metal plate steel wire beam hole (18) (see figure 9), bed die (2) main body upside has a circle flange (10), the internal diameter of this flange is larger than the external diameter of anchor metal plate (4) lower end flange (7), makes its (see figure 9) that can closely cooperate.Bed die (2) can be used plastic production, also available other suitable material.On the bed die main body, add four rinforcement bars (11) in order to increase its rigidity.Protective cover (12) is a cylindrical parts (Fig. 5 and Fig. 6 represent to be divided into 3 sections) that is divided into different-diameter more than 2 sections, the preceding paragraph is to chew (15) before the protective cover, the protective cover steel wire beam hole (22) of straight-through whole cover body is used for by steel tendon (16), and there is a circle flange (14) on the protective cover chassis.The external diameter of this flange must be slightly less than the internal diameter of anchor metal plate (4) flange (7), is convenient to install the protective cover (see figure 10).Protective cover (13) is a dome (seeing Fig. 7 and Fig. 8), and its internal diameter is larger than the external diameter that protective cover is chewed (15), can closely cover the protective cover (see figure 10) to guarantee the protection cover cap, makes steel tendon exempt from erosion.Steel tendon folder metal plate (17) is a steel part (seeing Figure 12) that arc is wide at the top and narrow at the bottom, the central angle of folder metal plate arc is 120 ° in this example, three clamping plate are just in time formed the anchor clamps of an inverted cone, pass the hole (18) of anchor metal plate when steel tendon, and a folder metal plate (17) is firmly squeezed into hole (18) to tighten up steel tendon (16) from anchor metal plate (4) lower end after giving stress applying, what keep steel tendon gives the stress (see figure 10).The effect of folder metal plate (17) comes down to a kind of chock effect, utilizes pressure to strengthen frictional force with steel tendon (16).The quantity of clamping plate can be not limited to three.

Before Fig. 9 is illustrated in concrete construction, the mounting method of a complete set of ground tackle.Can see through the circular hole of chewing (9) under the bed die (2) opening one on the template (1), place bed die (2), stretch into the hole of anchor metal plate (4) (18) chewing (8) before the bed die (2) then, and make flange (10) on flange (7) and the bed die at the bottom of the anchor metal plate location that coincide, again steel nail (3) pass nail hole (5) tightly ground nail on template (1).Preparation is finished like this, then as shown in figure 10, load onto steel tendon (16) (this moment steel tendon by the anchor metal plate the hole (18) and the hole (6) of bed die and make steel tendon pass template (1), be convenient to apply tension force).Make the stressed back of steel tendon fluid concrete (19), treat concrete setting after (take out steel nail (3) folding and remove bed die (2), squeeze into steel tendon folder metal plate (17) with fixing steel tendon, the maintenance steel tendon give stress.Cut off steel tendon then; put protective cover (12); and the flange (14) of protective cover is located with the flange (7) of anchor metal plate (4) bottom is identical; cover protection cover cap (13); supplementary irrigation concrete again; and the whole inside, bricklaying top layer (23) that is embedded in of ground tackle, and protected steel tendon (16) and ground tackle not to be corroded.

For the design's superiority is described, the spy provides existing masonry completion back ground tackle schematic diagram (seeing Figure 11), (24) are bricklaying top layer behind the folding removing template among the figure, (20) for being exposed to the ground tackle outside the bricklaying top layer, this part ground tackle (20) and steel tendon etc. all are vulnerable to corrosion as seen from the figure, even if after treatment, each ground tackle is all outwards given prominence to one, not only influences the working procedure that also increased attractive in appearance.

Therefore the design is rational in infrastructure easy to use and reduced operating expenses to a certain extent.

Claims

1, the built-in type prestress concrete steel tendon ground tackle a kind of by anchor metal plate (4), that folder metal plate (17) etc. are formed, of the present utility model being characterized as:

Base plate one end that a, an anchor metal plate (4), its both wings have nail hole (5) has a circle flange (7), and its other end is that the anchor slab that the centre can allow steel tendon (16) pass is chewed (21);

B, a kind of steel tendon folder metal plate of forming by three blocks of each 120 ° of fan-shaped metal plates (17);

C, a kind of and protective cover (12) that anchor metal plate (4) flange (7) is complementary and protection cover cap (13);

D, a kind of auxiliary tool that when giving the engineering construction of stress reinforced concrete, uses, anchor metal plate bed die (2);

By above-mentioned three parts and the built-in type prestress concrete steel tendon ground tackle that auxiliary tool is formed.