33results about How to "Increase the construction process" patented technology

The invention discloses a piled anchor press-in type caisson sinking construction method. The piled anchor press-in type caisson sinking construction method is characterized by comprising the following steps that anchor piles are embedded in a soil body under the caisson designed elevation in advance; a plurality of vertical through holes penetrating the well wall are arranged on the well wall ofa caisson in the circumferential direction at intervals, anchor cables are arranged in all through holes in a penetrating manner, the lower ends of the anchor cables are connected with the anchor piles, and the upper ends of the anchor cables penetrate a center penetrating jack on the upper end face of the caisson to be fixed through anchoring nuts; and the center penetrating jack is jacked to enable the caisson to generate downward pressure, and the caisson is pressed and sinks into the soil body. The piled anchor press-in type caisson sinking construction method has the advantages that the anchor piles, the anchor cables and the center penetrating jack are used for forming a sinking construction device to provide sinking force to the caisson, limitation by a site is avoided, the method is suitable for caissons in various shapes, the caisson sinking gesture can be effectively controlled, and stress in the caisson sinking process is even and stable.

The invention discloses a tidal flow electricity generation cast-in-place pile provided with a pile core steel pipe, and a construction method of the tidal flow electricity generation cast-in-place pile. The cast-in-place pile has the advantages of relatively small diameter, high bending and shear resistance and simple and convenient construction procedures; the cast-in-place pile also solves theproblems that an existing common-diameter cast-in-place pile cannot bear overlarge load generated by a large tidal flow speed in a tidal-flow-energy-rich region and a large-diameter cast-in-place pileoccupies too much of an effective tidal flow cross section, so utilization of tidal flow energy is affected and the construction cost of the large-diameter cast-in-place pile is too high. According to the tidal flow electricity generation cast-in-place pile disclosed by the invention, a pile core steel pipe with a certain length is hit into a rock-socketed cast-in-place pile with a common diameter; a pile foundation of the cast-in-place pile is ensured to be embedded in a depth which is 6 m below a seabed bed rock layer; under the reciprocating load effects of wave, tidal flow and the like, and especially under an extreme weather condition, the pile core steel pipe and a steel reinforcement cage can together play relatively high bending resistance and shear resistance of the cast-in-placepile; so the cast-in-place pile is especially applicable to an offshore area engineering foundation such as the foundation of a tidal flow electricity generation pile which bears a relatively large horizontal load, is high in flexibility and has relatively good economic benefits and social benefits.

The invention discloses a grouped second liner construction method for a large cross-section tunnel. A whole toroidal second liner is constructed after being divided into 6 parts. The method comprises the following steps: 1), pouring and backfilling an inverted arch of a left lower hole; 2), pouring and backfilling an inverted arch of a right lower hole; 3), pouring a side wall second liner of the left lower hole through a lower hole trolley; 4), moving the lower hole trolley to the right lower hole to pour a side wall second liner of the right lower hole; 5), erecting a bracket in the right lower hole, assembling a right upper hole trolley, and pouring a right upper arch second liner; 6), erecting a bracket in the left lower hole, assembling a left upper hole trolley, and pouring a left upper arch second liner. According to the grouped second liner construction method, a relatively large cross section is divided into a plurality of small cross sections to carry out construction, although the construction procedures the time limit for a product are slightly increased in comparison with those of a traditional two-step construction method, the construction risk is yet reduced to a great extent, the construction safety guarantee coefficient is increased, an extremely important guide value is provided for the tunnel constructed with a CRD (center cross diaphragm) method in certain special urban environment conditions, the construction is smoothly completed on the premise of guaranteeing safety, and remarkable social benefits are achieved.

The invention discloses a wire box installation point position construction method. The method comprises steps: 1) a wire tube head reserved on a floor is sleeved with a support frame connector; 2) the space position of the wire box on a prefabricated wall body is determined; 3) a wire box support frame is installed according to the space position of the wire box, the wire box support frame and the support frame connector are connected and positioned, and a panel part of the wire box is fixedly installed on the wire box support frame; 4) a wire tube with a matched length is cut out, the lowerend of the wire tube is connected with the wire tube head, and a wire joint in the wire tube is connected with the wire box; and 5) the wall body is fabricated according to the position of the prefabricated wall body, and the wire box is embedded in the wall body. The wire box point position is well adjusted when the support is fixed in advance, for example, elevation, an out-wall size and whetherto be stable are adjusted. Collection of construction slag for multiple times is not needed, and later chiseling is not needed, and the wire box support frame can be fixed without drilling in the bottom plate.

The initial support structure and construction method of tunnel freezing in weak surrounding rocks belong to the technical field of tunnel support structures. The upper and lower flanges of the arch frame are coated with insulating layers inside; the refrigeration device is composed of N-type semiconductors, P-type semiconductors and metal gaskets. The metal gaskets are pasted on the arch at random, and N-type semiconductors and P-type semiconductors are alternately welded at the intersection positions of the metal gaskets to form a galvanic pair; the heat dissipation device is composed of a connecting pipe, a radiator, a ventilation pipe and an exhaust pipe. After the excavation of the tunnel, the arch frame with refrigeration device is installed, the radiator is arranged inside the arch frame, and the adjacent arch frames are connected by connecting pipes; the ventilation pipe is inserted into the arch frame and led to the tunnel opening, and the exhaust pipe is inserted into the ventilation pipe. The DC power supply is connected with the refrigeration device; the present invention can not only form a frozen soil shell on the surrounding rock around the weak section of the tunnel, prevent water and control the deformation of the tunnel, but also increase tunnel Ventilation improves the construction environment.

The invention discloses a connecting method of steel arch units for tunnel supporting. Longitudinal section steel joists are arranged at connecting parts of the steel arch units of a tunnel along a tunnel axis; the arch units are connected onto the joists, so that the connection of the arch units is not limited by types and curvatures of the arch units; and during construction, a temporary supporting effect of arches at the upper parts of the joists constructed can be exerted without mounting of the arches at the side parts of the joists. The method solves the problems that the reliable connection between the arch units is difficult due to type and curvature factors of the arches and the supporting effect of the mounted arches is difficult to exert prior to closing of the annular arches; and the method achieves quick mounting of the steel arches without increase of construction procedures and timely exertion of the supporting effect, ensures tunnel safely in a construction process andaccelerates a construction progress.