US2201824A

US2201824A - Pavement joint

Info

Publication number: US2201824A
Application number: US185211A
Authority: US
Inventors: Alan E Brickman; George A Gleason
Original assignee: American Steel and Wire Company of New Jersey
Current assignee: American Steel and Wire Company of New Jersey
Priority date: 1938-01-15
Filing date: 1938-01-15
Publication date: 1940-05-21
Anticipated expiration: 1957-05-21

Description

y 1940- A. E. BRICKMAN AL 24 PAVEMENT JOINT Filed Jan. 15, 1938 4 Sheets-Sheet l [Memori- May 21,1940. A. E. BRICKMAN ET AL 2,201,824

PAVEMENT lIomT Filed Jan. 15, 1938 i 4 Sheets-Sheet 2 i Q. LL

May 21, 1940.

A. E. BRICKMAN ET AL PAVEMENT JOINT Filed Jan. 15, 1938 4 Sheets-Sheefi q ill/111151 5 6 =VII'IIIII47IIIIIIIIIII0 I I y 1940- v A. E. BRICKMAN El AL 2,201,824

PAVEMENT JOINT I Filed Jan. 15, 1938 4 Shgets-Sheet 4 t I Inventors. Lfl flL/IN E. BE/C'KMHN a'na 6750565 H. @LEflO/V.

device of the invention;

Patented May 21, 1940. I

UNITED STATES PATENT OFFICE.

PAVEMENT JOINT Application January 15, 1938, Serial No. 185,211

6 Claims.

This invention relates to joints, and more particularly to those which are used in concrete pavement construction to compensate for ex-' pansion and contraction due to changes intemperature and moisture content.

Joints of the type described are subjected to several deleterious factors and consequently give rise to considerable difliculty. Pre-molded felt or paper joints which are saturated with asphalt extrude from the pavement as the concrete sections expand, and present a bumpy surface to traific. After the pavement contracts, spaces are left on either side of the pre-molded fillers which permit the entrance of dirt and water. If water enters the joint it might later freeze and damage the pavement, while dirt becomes packed with the result that the pavement is not permitted adequate space for expansion and therefore heaves or buckles.

It is among the objects of the present invention to provide an efficient and inexpensive exmansion and contraction joint for concrete pavement which will also function to transfer the loadfrom one section of concrete to the other.

The foregoing and other objects will be apparent after referring to the drawings, in which:

Figure 1 is a fragmentary side elevation of the Figure 21s a sectional view on-the line 11-11 of Figure 1; v

Figure-3 is a view similar to Figure 2 but disclosing the device after it has-been completely insta1led;and

Figure 4 is a view similar to Figure 3 but disclosing the device after it" has been completely installed and while under contraction as the result of the expansion ofthe pavement.

' Referring more particularly to the drawings, the numeral 2 designates an elongated U shaped sheet metal; member; the vertical portions of which-*are' "greatly' elongated and substantially parallel to each other. The upper ends of the vertical portions of the U-shaped member 2 are bent convergently, as shown at 3, and then into parallelly opposite reverse curves 4 whose extremities are in spaced relationship. The parallelly opposite reverse curves 4 of the U-shaped memberj are connected by an-enclosing'molded rubber 'seal 5 which is shaped to conform to the entireties of the deformations thereof and close their extremities. The lower ends of the vertical portions of the U-shaped member 2 are connected by an integral curved portion 8. I

The U-shaped member 2 is disposed within and welded to a U-shaped suspension strap a which functions in a manner to be later described. The U-shaped suspension strap 9 embodies vertical portions which are elongated and substantially parallel to each other and right-angularly extending horizontal portions iii. The horizontal portions Ill of the U-shaped suspension strap 9 are provided with press-indented portions l2 which, extend upwardly therefrom to provide a good bond in the concrete blocks. The lower ends of the vertical portions of the U-shaped suspension strap 9 are connected by an integral curved portion 13.

The exterior of the integral curved portion lot the U-shaped member 2 is spaced fromthe interior of the integral curved portion l3 of the U-shaped suspension strap 9 by means of a spacer block M which is constructed and arranged to dispose the upper ends of the vertical portions of the U-shaped member 2 above the horizontal portions it of the U-shaped suspension strap 9.

. Immediately below thhe U-shaped member 2 there is disposed a horizontally extending bearing plate i5 having a central aperture 15 of sufficient size to permit the projection of the lower end of the U-shaped suspension strap 9 therethrough. The aperture it in the horizontally extending bearing plate i5 lies over a recess in the ground which provides a seat for the integral curved portion l3 of the U-s'haped suspension strap 9. The horizontally extendingbearing plate I5 carries downwardly depending plates H at the sides of theaperture 66 for lending support to the U- shapedsuspension strap 9. i

plate 85 are slidably supported in sleeveifi which rest'upon the ground. The'recessi'n the ground which provides a seat for the'integral curved portion it of the U-shaped suspension strap a is undercutoutwardly to the sleeves i 8;, thereby en'- abling "the latter to act as the only-supports for the liorizontally extending bearing plate i 5. Sheet-metal shields 2B are provided to extend along and around the vertical portions of the U- shaped suspension strap Q. These shields 2e are positioned to provide voids between themselves and the U-shaped suspension strap 9, thereby permitting the movement of the latter with the concrete slabs. The sleevesie on the ends of the horizontally extending bearing plate 83 are similarly positioned. Thus, there is eliminated the danger of concrete burrs which might obstruct the smooth movement of the concrete slabs on the horizontally extending bearing plate i5. The U-shaped suspension strap 9. is welded to the horizontally extendingbearlng plate l6 in order to enable correct installation and eliminate the danger of the creeping of the former when in tension.

Referring to Figure 1, of the drawings, there is illustrated a tapered extension 22 for the U- shaped member 2. This tapered extension 22 is for use on thickened edge pavement and extends the U-shaped member 2 to the sub-grade.

Referring again to Figure 1, the ends oi! the U-shaped member 2, and also the tapered extensions 22 if such are used, are sealed by vertical molded rubber strips 24'thereby excluding water etc., and assisting installation by accommodating slight span variations. The strips 24 are held against the ends of the U-shaped members 2 and tapered extensions 22 by means of forms 25.

The molded rubber seal 5 and U-shaped member 2 are held in position by vertical posts 21 carrying horizontally extending supporting lugs 28 at the time of pouring the concrete.

While we have shown and described one specific embodiment of the present invention, it will be seen that we do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of the invention as defined by the following claims.

We claim:

1. A joint for concrete pavement and the like comprising a pair of side-walls adapted to substantially abut the ends of the adjacent concrete sections, said side-walls being closed at their upper and-lower ends, a bearing plate beneath the ends of the adjacent concrete sections, said bearing plate being constructed and arranged to support the ends of said adjacent concrete sections, and a U-shaped member for maintaining the ends of the adjacent concrete sections in alignment, the open ends of said U-shaped member being provided with lateral extensions which are embedded in the adjacent concrete sections, said bearing plate having an aperture to receive said U-shaped member.

2. A joint for concrete pavement and the like comprising a pair of side-walls adapted to substantially abut the ends of the adjacent concrete sections, said side-walls being closed at their upper and lower ends, a bearing plate beneath the ends of the adjacent concrete sections, said bearing plate being constructed and arranged to support the ends of said adjacent concrete sections, and a U-shaped member for maintaining the ends of the adjacent concrete sections in alignment, said U-shaped member being disposed to embrace the lower ends of said side-walls and extending through an aperture in said bearing plate, the open ends of said U-shaped member being provided with lateral extensions which are embedded in the adjacent concrete sections. 1

3. A joint for concrete pavement and the like comprising a pair of side-walls adapted to substantially abut the ends of the adjacent concrete sections, said side-walls being closed at their upper and lower ends, a bearing plate beneath the ends of the adjacent concrete sections, said bearing plate being constructed and arranged to support the ends of said adjacent concrete sections, a U-shaped member for maintaining the ends of the adjacent concrete sections in alignment, said U-shaped member being disposed to embrace the lower ends of said side-walls and extending through an aperture in said bearing plate, the open ends 01' said U-shaped member being provided with lateral extensions which are embedded in the adjacent concrete sections, and bearing means for permitting the sliding movement of said bearing plate.

4. A joint for concrete pavement and the like comprising a pair of side-walls adapted to substantially abut the ends of the adjacent concrete sections, said side-walls being closed at their upper and lower ends, a bearing plate beneath the ends of the adjacent concrete sections, said bearing plate being constructed and arranged to support the ends of said adjacent concrete sections, a U-shaped member for maintaining the ends of the adjacent concrete sections in alignment, said U-shaped member being disposed to embrace the lower ends of. said side-walls and extending through an aperture in said bearing plate, and means'for spacing the lower ends of said side-walls from the bottom of said U- shaped member, the open ends of said U-shaped member being provided with lateral extensions which are embedded in the adjacent concrete sections.

5. In a transload highway joint comprising a pair of oppositely facing slab sections, a unitary base element underlying the joint and extending in opposite directions for a substantial distance beneath each slab, and a pair of upright members carried by said unitary base element so as to extend upwardly in substantial parallelism between the slab sections, respectively adjacent each the end faces oi the latter, the upper extremity of each upright member being turned to penetrate into its respectively proximate slab section in a substantially horizontal direction.

6. In a transload highway joint comprising a pair of oppositely racing slab sections, a unitary base element underlying the joint and extending in opposite directions for a substantial distance beneath each slab, and a pair of upright members carried by said unitary base element so as to extend upwardly in substantial parallelism between the slab sections, respectively adjacent each of the end faces of the latter, the upper extremity of each upright member being turned to penetrate into its respectively proximate slab section in a substantially horizontal direction, said upright members being so secured to said unitary base element as to be aflorded relative movement toward and away irom each other incident to the movement of the slabs when expanding and contracting.

ALAN I. BRICK'MAN. GEORGE A. GLEASON.