US2198985A - Steel pile structure - Google Patents

Description

April 30, 1940. A. w. BAILEY 4 2,198,985

STEEL PILE STRUCTURE Filed Aug. 19, 1958 2 Sheets-Sheet 1 nga. l' PK 70 O I I #13 W O 75 I If I I O :P O

0 i O y ATTORNEYJ p i 30, 1940. A. w. BAILEY I 2,198,985

'STEEL PILE STRUCTURE Filed Aug. 19, 1938 2 Sheets-Sheet 2 mmmllmmn,

7a I y HP i n IN VENTOR.

- A TORNEYS Patented Apr. 30, 1940 2,19.s,es5

UNITED STATES PATENT OFFICE STEELIPILE STRUCTURE v k v Alonzo W. Bailey, Cleveland, Ohio H Application August 19, 1938,, Serial No. 225,745

" 3 Claims. (01. 61-53) This invention relates broadly to fabricated steel piles and more specifically to an improved pile structure which comprisesa composite structural steel column constructed to resist the driving loads imposed thereon and formed for the support of a tubular sheet metal shell.

One of the objects of the invention is to provide a steel shaft frame work, formed from rolled Another object of, the invention is to provide a pile core which is formed with divergent vwebs having transverse apertures thereon to facilitate the anchorage of the concretepoured-within the pile casing after thepile has been driven.

Another object of the invention is to provide a core member which is formed to accommodate the afiixation of the steel driving point and the shell in such a manner as to obviate the use of the mandrel customarily employed in driving I thinwalled tubular piles of this character.

Another object of the invention is to provide structural steel shaft encased with a shell adapted for the reception of a material which will form a monolithic core structure, the shaft constituting the reinforcing element for the core.

Another object of the invention is to provide a pile core structure formed from, rolled and fabricated steel plates so fashion'edas to facilitate the ready assembly .of. the'members with each other and with the shell mounted thereon.

Other objects more or less ancillary of the foregoing and the mannerin whichall the various objects are realized willappear in the following description which, considered in connection with I the accompanying drawings, sets forth the preferred embodiment-of the invention.

As illustrated in the accompanying drawings, Figure 1 is an elevational View partially-in section of one form of the improved pile, the drawing including adriving anvil mounted in opera-' tive position upon the upper end of the pile.

Figure 2 is a transverse section of the pile illustrated in Figure l, the section being taken on a plane'indicated by the line-Z-2 in Figure 1; Figure 3 is a similar transverse section of the pile shown in Figure 1, a' section being taken from the plane indicated'by the line 3--3 of Figurel;

in configuration-of a V-ba'r structure or angle iron; 1 .1

Figure 7 is a plan view of the partially formed blank shown in Figure 6; 1 I

,Figure .8 is a slide elevational view of the core blankillustrated in. Figure 6 after it is rolled-in configuration of aV-bar or angle iron;

' Figure 9 is a plan view thereof;

Figure 10 isan elevational view of the core after the membersthereof are. bent and welded in assembled relation;

Figure 11 is a plan View of the assembly of the core member shown in Figure 10; I V 7 Figures 12, 13, 14 .and'15 are modified forms of the shell .or pile casing;

Figure 16 is a modified form of a adapted for use with pile casings of the type shown, in Figure 13. In this structure the core members embody a pairof opposedangle irons having a Z-rail disposed between v the vertices of the V-sections; Y

Figure 17 is a modified form of a similar core structure to that shown in Figure 16, but formed of three angle iron sections welded together along their vertices;

Figure 18 is a view in perspective of a fragmentary portion of a core similar to that illustrated in Figure 1, showing another form in which theblanksmay be pierced and illustrating the appearance of the welded connection between the V -bar members;

Figure 19 is a view, inperspective of apair of angle irons fabricated to facilitate the assembly core assembly thereof with-a rod interlaced between thetongue and slot structurefor'med in the vertices of the rails;

Figure 20 is a transverse sectional view of the rails and rodshown in Figure 19; n v T Figure 21 is a plan View of a modified form of a core structure of the type shown in Figure 1, the core members being united in this case by angle iron clips welded to the inner and outer faces of the V-bars adjacent th'elvertices thereof;

and

Figure 22 is another modified form of the core structure of the type shown in Figure 1, the

assembly embodying a plurality of rails having flanged end portions assembled in cruciform relation by angle gusset plates welded to the opposed faces of the convergent ends of the rails.

Referring first to Figure l, tl e pile comprises a shell Ml which encases a core H having a shoe or tip 12 mounted on the end thereof. The core members are preferably constructed from blanked plates or steel strips [3 suitably pierced along their medial axes to provide openings M which may be arranged in contiguous relation upon assembly of the core unit. The strips 13 are also constructed with flanges l5 in their marginal edges to provide bearing faces for. the

support of the casing member or shell Ill. The pile core blanks may be rectangular as shown in Figure 1 or sheared to form. a section having slightly tapered side walls as illustrated in Figure 6, the blanks of either form being rolled or 'bent along their medial axes to form a rail of suitable angular configuration to accommodate the support of the type of shell contemplated for use therewith. The strips or rails l3 thus formed are then arranged with the vertices thereof disposed in opposed relation so that the stock intermediate the apertures M in each member may be welded together to form a structure of cruciform cross section. As will be seen by comparison of the drawings illustrating the flanges l5, the end portion of the core members are bent at suitable angles to facilitate the welded connection of the shell H) thereto. The shell may be constructed, as shown in Figure 5, from a single strip of sheet steel having. the marginal edges thereof over-. lapped andwelded along the seam I! or, if desired, may be formed of aplurality of strips l8 and i9 welded along their marginal edges as shown in Figure 12. In the construction of the longer piles the core members are arranged in end to end relation and butt welded, the shell,

sections'in such structurevbeing overlapped and welded or abutted and reinforced by overhung strips or bandswelded thereto. In the construction of piles which are intended for use in relatively hard material or subjected to heavy driving strains the core is formed with a greater number of divergent ribs or veins than provided by the structure illustrated in Figure 1. The

. construction of such a core member contem.

plates the use of a plurality of V-rails, l6 arranged with their vertices disposed along a common axis as shown in-Figure 1'7, or as illustrated in Figure 16 the vertices of the V-rails T6 may be welded to the Z-bar 20 along the medial axis thereof. The flanges 2! in the free ends of such core members may be bent to accommodate the support of the hexagonal shell 22 illustrated in Figure 13, or the cylindrical shell z lillustrated in Figure 15. T-

In the embodiment illustrated in Figure 19 the rails are fabricated with rectangular apertures It arranged instaggered relation in the respective sections of the assembly so that the tongues or loops 25 defined by the stock intermediate the apertures maybe inserted. within the apertures of the opposed rail and 'thetwo members united by a rod 26 interlaced within the loops. If desired the engaged parts of the hinge structure thus formed may be welded, at intervals, to prevent displacement of the rod and relative movement of the rails.

The connection between the V-rails It may be reinforced or formed in its entirety by angle clips or rails 2'! welded to the outer faces of the veins of opposed pairs of 'V-raiIs I6 as shown'in Figure 21, and further reinforced with angle irons 28 welded upon the inner faces of the V-rails adjacent the vertices thereof.

Although the core sections disclosed in the foregoing contemplate the use of V-rails or commercial structural angle irons, it is obvious that a core member having divergent veins may be constructed by enclosing the lineal edge of plates between the flanges of angle irons arranged with the vertices of the angles disposed in parallel relation. Thus, as'shown in Figure 22 the angle irons 29 and. 30 support the plates 3! through a welding connection between the flanges of the angles and the inner marginal edges of the plates. As in the former embodiments the free ends of the divergent plates are formed with flanged edges 32 which may be bent to facilitate the support of a shell of any desired configuration. In the fabrication of the core blanks included in the foregoing forms the apertures l4 may be of any size or configuration which will accommodate an unrestricted flow of the concrete therethrough. The apertures, however, should be disposed in such a manner as to preserve the strength of the material under the longitudinal load imposed thereon during the driving operation of the pile.

The divergent veins of the piles illustrated in Figures 21 and 22 are formed with apertures in the outer edge thereof similar to the openings 33 in Figure 19 to facilitate the anchorage of the concrete with the structural iron reinforcing members or the core.

The shoe or driving tip I2 is preferably formed with a recess 34 of suitable proportions to accommodate the reception of the end portion of the core'and to facilitate a welded connection between the engaged members of the assembly. The shoe may, if desired, be formed with a transerse opening 35 communicating with the recess 34 in order to permit the concrete to flow therethrough and form in certain types of strata a bulbous end upon the pile. V The pile may be driven by an anvil 36 having radial grooves therein formed in configuration of the transverse section of the core member and adapted to telescopically engage theupper end of the core member and shell Ill. The upper end portion 31 of the anvil may be of any configuration which will accommodate the type of hammer or driving rig employed in setting the piles.

7 After the piles are driven and the anvil 36 removed the shell is filled with concrete, which will flow through the apertures in the core veins and be bonded therewith, thus forming, when hardened, a monolithic structure reinforced by the steel core member.

It is recognized, in concrete construction work that a superior product may be attained if the forms or concrete casing are agitated or vibrated after the mixture has been poured, but before it is set. To date, however, such practice could not be used in pile installation work as none of the commercially known concrete pile shell were formed to accommodate the application of a vi- Although theforegoing description is' neces prising a pair of relatively heavy structural sarily of a detailed character, in order that the invention may be completely set forth, itis to be understood that the specific terminology is not intended to be restrictive or confining, and that various rearrangements of partsand modifications of detail may be resorted to without departing from the scope or spirit of the invention as herein claimed.

I claim:

1. A pile comprising a sheet metal shell, a fabricated steel core, a driving shoe on said core, and a concrete fillerin said shell, said core comprising a plurality of vertically disposed plates having apertures therein to facilitate the flow of concrete therethrough and a plurality of veins formed for the support of said shell, said driving shoe having a transverse opening extended therethrough communicating with the interior of said shell for the reception of said concrete filler.

,2. A pile comprising a sheet metal shell, a fabricated steel core, a driving shoe on said core, and a concrete filler in said shell, said core cornwelded to said shoe.

angle irons adapted to resist the driving blows to which the pile is subjected during, the setting along their vertices and having apertures therein to facilitate the flow of said concrete filler therethrough, the upper end of said shoe having a recess therein, the end of said core being seated in thereof, said angle irons being Welded together 1 said recess, said shell being welded to the longitudinal edges of the angle irons forming said core and welded to said shoe.

3. A pile embodying a shoe,'a core and a shell supported thereby, said core comprising a pair of rolled V-bars having apertures therein disposed in staggered relation in the vertices of eachbar, the stock intermediate the aperture in one bar being inserted in the aperture in the other bar, a rod Within and extending through the portions of each bar projecting through said apertures, said shoe having a recess in the end portion thereof, said core being seated in said recess and being ALONZO W. BAILEY.

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