초록 ▼

A method and apparatus for insitu reinforcement of a section of a wooden pole at a position below the groundline is disclosed. The method includes the steps of forming a cavity around the pole, mounting an elongated sleeve around the pole to define an annular space with the pole, and filling the spa

A method and apparatus for insitu reinforcement of a section of a wooden pole at a position below the groundline is disclosed. The method includes the steps of forming a cavity around the pole, mounting an elongated sleeve around the pole to define an annular space with the pole, and filling the space with a reinforcing material. The improved portion of the method includes supporting the sleeve above the groundline while mounting the same around the pole and securing the lower end against radial expansion, lowering the sleeve until it extends over the section to be reinforced, and filling the sleeve with a bonding agent, such as a foaming epoxy resin system, which bonds the sleeve to the pole over the length of the section to be reinforced. Preferably the upper end of the sleeve is contracted and sealed against the pole. A sleeve assembly suitable for use in practicing the method, and a sleeve assembly including a horizontally extending shear plane structure to enhance the safety of poles next to highways are disclosed.

대표청구항 ▼

Apparatus for the insitu reinforcement of a wooden utility pole while supported in the ground including, a sleeve assembly having a longitudinal axis and mounted in radially spaced relation to said pole and extending axially from a position below the groundline to a position above the groundline, an

Apparatus for the insitu reinforcement of a wooden utility pole while supported in the ground including, a sleeve assembly having a longitudinal axis and mounted in radially spaced relation to said pole and extending axially from a position below the groundline to a position above the groundline, and a reinforcing agent positioned between said sleeve assembly and said pole, wherein the improvement in said apparatus comprises: an upper portion of said sleeve assembly including male and female sleeve halves being secured above the ground in tight abutting relation to said pole; a lower portion of said sleeve assembly surrounding said pole and extending into said ground, said sleeve assembly lower portion including male and female sleeve halves and including a fill port in a side thereof positioned below said upper portion, and said reinforcing agent being a thermosetting, plastic foam rigidly bonding said sleeve assembly to said pole over a length of said sleeve assembly lower portion and below said upper portion, said sleeve assembly flaring outwardly from the upper portion to the lower portion and further including shear plane means between said upper and lower portions and extending transversely of said longitudinal axis across said sleeve assembly to enable shearing of said sleeve assembly under a predetermined force.