51results about How to "Improve construction stability" patented technology

The invention discloses a prefabricated bearing platform mounting method and relates to the field of bridge construction. The prefabricated bearing platform mounting method comprises the following steps that a bearing platform and bottom pier bodies are prefabricated in a prefabrication field, and steel pile hole positions are reserved in the bearing platform; the bearing platform is lifted to a pile site by a large floating crane; a pile top guiding device is pre-mounted on steel piles in the pile site before the bearing platform is lifted; after the bearing platform is lifted down and is in place, a carrying pole is arranged on a pile top longitudinal direction adjusting position in a hanging manner, and the horizontal plane of the bearing platform is regulated as required; and the pouring of bottom-sealing concrete of a steel cylinder cofferdam, the water pumping, the binding of reserved hole steel reinforcing bars, and the pouring of reserved hole concrete at non-lifting points and lifting points are sequentially finished, and the steel cylinder cofferdam is detached, so that the mounting of the prefabricated bearing platform is finished. According to the prefabricated bearing platform mounting method disclosed by the invention, a small steel cylinder cofferdam replaces a large bearing platform steel cofferdam, so that the steel material can be effectively saved, the on-water operation time is shortened, and the construction cost is reduced; and meanwhile, the influence of water flow to the construction of the bearing platform is reduced, and the construction quality of the bearing platform is ensured.

The invention discloses a technical method of a green sponge roof based on grass-planting boards, specifically: laying waterproof materials on the roof; laying spacer materials on the waterproof layer; then laying ecological grass-planting boards; Lay isolation filter material; bury the planting soil on the filter layer; sow the herb seeds into the planting soil above the grass-planting board, after watering and maintenance, the roof greening will be completed when the herb plants form their own ecological community, forming a green roof . The construction process of this green roof technology is simple and easy to operate. The grass-planting board is used as the drainage storage layer and the base surface for planting. Compared with the coarse sand filter layer and gravel (pebble, ceramsite) drainage layer of the traditional green roof, the construction The difficulty is much less, and the construction stability is high, so as to ensure the final construction quality and effect. The formed landscape is not only ecological but also beautiful.

The invention provides a manned lifting device for building wall surface detection and repair. The manned lifting device comprises a supporting steel frame and a bearing steel frame, wherein the bearing steel frame is positioned above the supporting steel frame, and at least one lifting assembly is arranged between the bearing steel frame and the supporting steel frame; a lifting supporting blockused for supporting the lifting assemblies is arranged at the top of the supporting steel frame, and bases are arranged at the positions, corresponding to each lifting assembly, of the bottom of the bearing steel frame; each lifting assembly is composed of a linear driving mechanism and a lifting supporting part; and each lifting supporting part is formed by seamless butt joint of a plurality of lifting supporting plates, a guide channel used for allowing the lifting supporting plates to pass through is formed in each lifting supporting block in a penetrating mode, and a locking mechanism is arranged on one side of each lifting supporting block. According to the manned lifting device, the structure is simple, construction and mounting operation is facilitated, the lifting structure adoptsmodular design, the problems of shaking and inconvenient mounting of traditional lifting are avoided, meanwhile, secondary damage to the wall surface is avoided, and the construction stability is high.

The invention discloses concrete pumping equipment and an arm rest tail end vibration reduction method for a concrete pump truck. The concrete pumping equipment comprises a concrete conveying pipe and a gas charging system. The gas charging system comprises a pressure gas source (1) and a gas charging pipeline (2), the gas charging pipeline is connected with the pressure gas source and the concrete conveying pipe so as to charge pressure gas into a pipe cavity of the concrete conveying pipe. The pressure gas is creatively charged into the concrete conveying pipe through the gas charging system which is additionally arranged, so that the continuous gas is charged into the discontinuous size of concrete which is pumped discontinuously, and pumped media flow continuously; thus, pumping impact is reduced radically, and the purpose of reducing the tail end vibration of an arm rest is achieved; in addition, the pressure gas is charged, so that multiphase flows are formed inside the concrete conveying pipe, internal energy consumption among the multiphase flows is increased, and vibration is also relieved radically. Therefore, in the construction process of the concrete pump truck, the arm rest tail end displacement vibration can be reduced initiatively, and the construction stability of the concrete pump truck is improved.

The invention discloses a construction method of an elevator shaft operation platform. The construction method comprises the following steps that A, the operation platform is acquired, the operation platform comprises a top frame, a support frame and a diagonal bracing member, the support frame is provided with a bracket vertically arranged, and the top frame is further provided with a lifting lugfor lifting; a construction platform is hinged to the upper part of the top frame, and a height adjusting mechanism is arranged between the construction platform and the top frame; B, the operating platform is lifted to a completed elevator shaft through a tower crane, the bracket is located on a floor slab at an elevator shaft door to support the entire operation platform, the height adjusting mechanism is adjusted to enable the construction platform to be in a horizontal state, the installation of the operation platform is completed, and construction personnel carries out construction on the construction platform; C, after the construction is completed, the operating platform is lifted to an upper floor; and D, the steps B and C are repeated until the operation construction in the elevator shaft is completed. The construction method has the advantages of being able to reduce construction difficulty, improving the construction environment, improving construction stability and safetyand the like.