Block for constructing retaining wall, prefabricated reinforced retaining wall constructed using the block and construction method of the prefabricated reinforced retaining wall

A block for constructing a retaining wall comprising:

• a front surface 10 forming a surface of a retaining wall, and a rear surface 20 contacting a reinforced earth structure;
• left and right sides 30 and 30′ formed rearward toward the rear surface 20 at left and right sides of the front surface 10, and having intermeshing portions 32 and 32′ for intermeshed connection between adjacent blocks at their front portions, and narrow portions stepped with the intermeshing portions 32 and 32′ at their rear portions;
• a top surface 40 having assembling protrusions 42 and 42′ formed on the front and middle portions thereof, reinforcement member insertion grooves 44 formed in the rear portion in a front-to-rear direction, into which a reinforcement member or an anchor for connecting the reinforcement member is fitted, and fixture grooves 46, into which a fixture pin P for fixing the reinforcement member or anchor is inserted, formed on either side of front of the reinforcement member insertion groove 44 in such a way as to be opened toward the left and right sides 30 and 30′;
• and
• a bottom surface 50 having assembling recesses 52 and 52′ recessed at its front and middle portions to be located at positions corresponding to the assembling protrusions 42 and 42′ formed on the top surface 40, and reinforcement member insertion grooves 54 and fixture grooves 56 formed at its rear portion corresponding to the counterparts 44 and 46 of the top surface 40.

A block for constructing a retaining wall comprising:

• a front surface 10 forming a surface of the retaining wall and a rear surface 20 contacting a reinforced earth structure;
• left and right sides 30 and 30′ formed rearward from the left and right of the front surface 10 toward the rear surface 20 and having intermeshing portions 32 and 32′ for connecting adjacent blocks in an intermeshed fashion;
• a top surface 40 having a crosswise assembling projection 42 connecting upper and lower blocks with each other in an intermeshed fashion, a reinforcement member insertion groove 44 formed in a front-to-rear direction in which a leading edge of the reinforcement member buried inside a reinforced earth structure or a reinforcement member connecting anchor is inserted, and a fixture groove 46 formed in the left and right of the reinforcement member insertion groove 44, and into which the reinforcement member or the anchor is inserted into;
• and
• a bottom surface 50 having a crosswise assembling groove 52 recessed at a location corresponding to the crosswise assembling projection 42 of the top surface 40, a reinforcement member insertion groove 54 formed at a location corresponding to the reinforcement member insertion groove 44, a vertical wall 57 extending from the reinforcement member insertion groove 44 and formed between the reinforcement member insertion grooves 44 and 54, and a partition wall 55 formed between the reinforcement member insertion grooves 44 and 54 in a left-to-right direction ranging from the front surface to the rear surface 20.

A panel for a prefabricated block-type reinforced earth retaining wall comprising:

• a plurality of unit blocks B each unit including a front surface 10 forming an outer surface of a retaining wall, a rear surface 20 contacting a reinforced earth structure, a bottom surface 50 and a top surface 40 having a plurality of channels 1 and throughholes 2 vertically formed at a predetermined position of each channel 1, and left and right sides 30 and 30′ having an insertion portion 5 and a locking groove 6, creating a portion into which an insertion portion L for preventing the unit blocks B of an adjacent panel A from alienating from or getting close to each other by interlocking unit blocks B of the adjacent panel A, is inserted;
• connecting elements P′ inserted into the throughholes 2 in a state in which the plurality of unit blocks B are vertically stacked;
• and
• connecting means 12′ engaged with one end of the connecting element P′ and connecting the stacked plurality of unit blocks B with one another.

A method for constructing a reinforced earth retaining wall using a prefabricated panel, comprising:

• assembling panels such that unit blocks B, formed at factories, are assembled using connecting elements P′ and connecting means 12′;
• transporting panels and placing the same on a footing of the retaining wall, and interlocking the panels A such that a fixture element L is inserted into a locking groove 6 through an insertion portion 5 formed on a unit block B forming each panel A, and a temporary fixing clamp C is locked on the fixture element L and tightened by a nut N in the rear of the panel A, thereby maintaining an interlocked state between the panels;
• sequentially resting another panels A on the panels to interlock adjacent panels using the fixture element L in the same manner as in the interlocking step, and arranging reinforcement members in a horizontal direction in the rear of the panels A;
• and
• applying a reinforced earth structure over the horizontally arranged reinforcement members and compacting.