2 results about "Tongue and groove" patented technology

The invention relates to a grooved bank protection T-shaped pile. The invention aims to solve a technical problem of providing the grooved bank protection T-shaped pile with simple structure, strong stability and good water-soil stop effects, so as to improve the effect of treating gaps between adjacent pile bodies and reduce the material amount of bank protection retaining walls. The technical proposal for solving the problem is as follows: the grooved bank protection T-shaped pile is characterized in that the pile is in a T shape formed by a first panel and a web plate; the panel and a ribbed slab are in gradual change transition; and two wings of the first panel are provided with grooves. The T-shaped pile can be used for constructing river bank protections, wharf bases and ribbed-structure thin diaphragm wall retaining walls.

The invention discloses a manufacturing method of a dovetail tenon joint wood structure square column for wood structure connection. The square column with a square cross section is equally divided into two sections, the upper section is an upper column mortise, and the lower section is a lower column tenon; the lower column tenon is cut into a lower column triangular tenon body (3) and a lower column dovetail tenon body (4); the upper column mortise is correspondingly cut into an upper column triangular mortise body (5) and an upper column dovetail mortise body (6), and the sizes of the mortise bodies correspond to the sizes of the tenon bodies; the peak line of the lower column triangular tenon body (3) is aligned with the short side line of the upper column dovetail mortise body (6), after the upper column triangular mortise body (5) slides in along the waist line of the lower column triangular tenon body (3), the peak of the lower column triangular tenon body (3) reaches the peak of the upper column triangular mortise body (5), and at the moment, the lower column dovetail tenon body (4) and the upper column dovetail mortise body (6) are completely connected. The square column is attractive in appearance and high in connecting strength, the pressure resistance of a wood structure is greatly improved, and the wood structure has good seismic performance as well in an earthquake.