198results about How to "Facilitate subsequent construction" patented technology

A member for in-situ casting the reinforced concrete is composed of two halves, which are fastened together to form a hollow thin-wall member used for in-situ casting hollow floor slab, roof, wall, etc. Said member is made up by die pressing. Its advantages are high strength, low cost, and convenient transportation.

A hole-forming member for in-situ casting the reinforced concrete is such a one used to combine a whole cavity. The connecting parts are used to combine two or more said members to form a hollow thin-wall member. Its advantages are high strength, low cost and high construction speed.

The invention discloses a pre-paved type polyolefin self-adhering film waterproof sheet and a preparation method thereof. The pre-paved type polyolefin self-adhering film waterproof sheet is composed of two layers of structures, namely, a polyolefin waterproof sheet and a self-adhering glue layer, wherein the polyolefin sheet is prepared from the following raw materials in parts by weight: 65-85 parts of polyethylene, 10-25 parts of thermoplastic elastomer, 5-10 parts of polyethylene grafting materials, 3-8 parts of a modified tackifier, 0.2-0.6 part of titanium dioxide and 0.1-0.5 part of an antioxidant. The preparation method comprises the following steps: mixing according to the raw material ratio of the polyolefin waterproof sheet, fusing, extruding and forming the polyolefin sheet, and then compounding one self-adhering glue layer onto the sheet. The polyolefin self-adhering film waterproof sheet prepared according to the method has the advantages of excellent physical and mechanical properties, excellent waterproof property, moderate softness, excellent workability, safety, environmental protection and excellent peeling strength of self-adhering glue layer and post-poured concrete. The pre-paved type polyolefin self-adhering film waterproof sheet prepared according to the method provided by the invention can be used for waterproof purpose of railway tunnels.

The invention relates to a method and system for tunneling extrahard rock by means of a hydraulic fracturing technology and a tunneling machine. By means of the hydraulic fracturing technology, the extrahard complete rock generates cracks, and therefore the rock integrity is lowered; according to the formation condition, the drilled hole position and the fracturing sequence of a face are designed, a drill rod stretches out of a hole to perform perpendicular punching in sequence on the face, a to-be-fractured section inside the drilled hole is sealed through a packer, high-pressure water is pumped into the to-be-fractured section, the hydraulic pressure is increased continuously, after the hole wall is fractured, cracks are expanded, and pressurizing is stopped after the cracks are expanded to the preset length, the packer together with other fracturing devices is taken out, and the tunneling machine begins tunneling. According to the method and system, the integrity of the rock within the construction range is lowered, the tool abrasion during tunneling is reduced, and the tunneling efficiency is improved.

The invention discloses an assembled type shear wall upper-layer and lower-layer combined connection structure which comprises an upper-layer prefabricated wall and a lower-layer prefabricated wall which are connected in a butted mode. When the upper-layer prefabricated wall and the lower-layer prefabricated wall are connected in the butted mode, a downward-protruding supporting structure of the upper-layer prefabricated wall is supported on the lower-layer prefabricated wall, structural longitudinal ribs of an embedded column of the upper-layer prefabricated wall and structural longitudinal ribs of an embedded column of the lower-layer prefabricated wall are opposite in a one-to-one mode and are connected mechanically, the structural longitudinal ribs I of the upper-layer prefabricated wall and the structural longitudinal ribs II of the lower-layer prefabricated wall are connected in an overlapped mode, and the upper-layer prefabricated wall and the lower-layer prefabricated wall are connected at the joint through a cast-in-place concrete structure. The combined connection way combined with the cast-in-place concrete structure is formed through mechanical connection, steel bar splicing and concrete spraying, the wall prefabrication technology is simpler, on-site construction is more convenient and rapider, and the workpiece manufacturing cost and the construction cost can be reduced.

The invention relates to the field of building construction, and particularly relates to a pipe gallery construction process. The pipe gallery construction process comprises the following process steps of S1, surveying and setting out; S2, groove excavation; S3, cushion layer construction and bottom plate waterproof construction, specifically, S31, concrete cushion layer pouring; S32, base waterproof treatment; S4, pipe gallery steel bar and concrete pouring; S5, formwork engineering; S6, concrete pouring, specifically, S61, layered pouring; S62, concrete pouring; S63, concrete curing; S7, deformation joint and construction joint treatment; S8, wall body and top plate waterproof treatment; and S9, groove backfilling. According to the pipe gallery construction process, through a concrete cushion layer, a cement mortar leveling layer, a waterproof coiled material and a waterproof coiled material, base waterproof treatment is achieved, the influence of underground water seepage on pipe gallery construction is reduced, the waterproof performance of a base is enhanced, subsequent construction of a pipe gallery is facilitated, and the overall efficiency of pipe gallery construction is improved; and meanwhile, through a concrete pouring process, holes in the concrete pouring process are reduced, and the overall strength of the pipe gallery is improved.

The invention provides a pile foundation pile head concrete pre-stripping assembly and a construction method. The assembly comprises a pre-embedded isolation component, a pre-embedded splitting component, splitting equipment and hoisting equipment. The pre-embedded isolation component comprises main reinforcement sleeves and acoustic testing pipe sleeves. The preembedded splitting component comprises a set of horizontal splitting pipes pre-embedded on a fracture surface. The splitting equipment comprises hydraulic splitting machines. The hydraulic splitting machines are inserted into the horizontal splitting pipes from the two sides to conduct splitting to form the fracture surface during breaking and stripping. The hoisting equipment comprises a lifting tool, a lifting hook and a steel wire rope. The steel wire rope penetrates through the split and broken horizontal splitting pipes and is connected with the lifting hook, so that pile head concrete is stripped off from reinforcements and acoustic testing pipes. The pile foundation pile head concrete pre-stripping assembly can be made of engineering leftover materials and is low in cost. During construction, the fracture surface is formed through the hydraulic splitting machines, and then the pile head concrete can be broken and stripped off. The process can be completed only by one person. The hydraulic splitting machines can provide smooth pile head connecting surfaces to facilitate later pile foundation detection and follow-up construction. The pile foundation pile head concrete pre-stripping assembly is easy to operate, low in technical requirement, good in breaking and stripping effect and high in efficiency.

The invention discloses a public building interior decoration engineering sample construction method. The method comprises the following steps of: performing integrated and detailed planning of a scheme from the aspects of dimensions of a user, indoor traffic facilities, indoor space organization, building performance simulation, indoor lighting environment, decorative modeling of wall, roof, floor, furniture, textile and plant and the like based on the design process of qualitative design first and quantitative design later of an interior decoration design scheme according to the design specification of the owner; formulating a sample unit design scheme; after determining the scheme, clearing up the sample room area, and making containment publicity sign; submitting the material sample for approval and determining the material; composing the working drawing; closing up different decoration materials; making a purchase order according to the construction progress; after the products arrive, assembling the products according to the assembly sequence of an assembly drawing; and finishing the decoration details according to a rectification scheme and protecting the finished product. The method disclosed by the invention has the advantages of complete design scheme, low comprehensive cost, simple construction environment and low safety risk.

The invention relates to the technical field of waterproof construction, in particular to waterproof technologies of underground engineering such as subways, underground pipelines, tunnels, underground pipe corridors, underground garages and underground air defense facilities, and discloses a full surrounding skin-type structure of underground waterproof engineering and a construction method. The full surrounding skin-type structure of the underground waterproof engineering comprises a bottom layer, a top layer and a side face layer; the bottom layer, the top layer and the side face layer are surrounded to be whole and form a hollow structure; water-soluble non-curing coating layers and thin film reinforcing layers are arranged on the bottom layer, the top layer and the side face layer correspondingly; and the bottom water-soluble non-curing coating layer, the side face water-soluble non-curing coating layer and the top water-soluble non-curing coating layer form the integrated seamless connection full surrounding structure. According to the full surrounding skin-type structure of the underground waterproof engineering and the construction method, the defects that in the prior art, as for the underground waterproof engineering, whole failure or leakage in local joints are easy to occur are overcome.

The invention discloses a lifting device for electric construction. The lifting device comprises an overload protecting device capable of automatically giving an alarm, an illuminating lamp, a liftingcylinder, a support rod, a base plate, a protective cover, wheels, trundles, trundle fixed plates, a direction control rod and a ventilation pipe; the lifting cylinder is welded at the left end of the upper surface of the overload protecting device capable of automatically giving an alarm; the illuminating lamp is glued to the upper end of the lifting cylinder; and the ventilation pipe is embedded in the right surface of the overload protecting device capable of automatically giving an alarm. Through arrangement of the overload protecting device capable of automatically giving an alarm, afterequipment circuits are aged, the bearing capacity on current and voltage disorder change is reduced, and the overload protecting device can protect the circuit safety to protect the equipment safety;and after the overload protecting device cuts off the equipment circuits, the alarm lamp can be timely brightened, so that workers timely know the equipment working state, the equipment safety is protected, and the workers are convenient for subsequent construction.

The invention discloses a friction sliding energy-consuming and damping device of a multi-span simply supported beam. The friction sliding energy-consuming and damping device comprises a plurality offirst hydraulic cylinders which are vertically arranged, a horizontal plate is arranged at the top ends of the first hydraulic cylinders, and the horizontal plate is provided with a plurality of groups of bridge sliding devices. Pressing-pushing devices are arranged on one sides of second vertical plates, the pressing-pushing devices comprise hydraulic pressing-pushing oil cylinders, and the hydraulic pressing-pushing oil cylinders are provided with distance measuring sensors and pressure sensors. One ends of the hydraulic pressing-pushing oil cylinders are connected with third vertical plates, and the other ends of the hydraulic pressing-pushing oil cylinders are in contact with the third vertical plates. The second vertical plates are provided with inclined rods used for supporting the hydraulic pressing-pushing oil cylinders, and the inclined rods, the hydraulic pressing-pushing oil cylinders and the second vertical plate form triangles. The friction sliding energy-consuming and damping device of the multi-span simply supported beam has the beneficial effects that firstly, precast bridges are hoisted, the precast bridges are subjected to fine adjustment after hoisting to a preset position by the pressing-pushing devices and jacks, so that end portions of two adjacent precast bridges are attached with each other to facilitate subsequent construction.

Disclosed is real-time treatment method and equipment of a bored pile head. The method includes the steps of after underwater concreting for a bored pile, pulling out a guide pipe, driving the guide pipe to a position to close a pile location through a travelling and slewing system, starting a luffing device to erect a telescopic drill rod, positioning a drill rig, aligning the center of a bit with the center of a borehole position, lowering the telescopic drill rod to drive the bit to reach a layer of scum, starting a driving rotating motor to drive the bit to rotate, driving the concrete higher than the layer of scum and the pile head preset elevation into the bit, lifting up the telescopic drill rod to lift the bit out of the bored pile when the bottom of the bit reaches the preset elevation, and clearing the scum and concrete in the bit to finish real-time treatment of the pile head. The equipment comprises the travelling and slewing system and the luffing device. The real-time treatment method and equipment has the advantages that pile head concrete quality is improved, work efficiency is improved, expenditures are saved, bits of different diameters are available, adaptability is high, and deep-hole operation for great-depth pile head treatment is also available.

The invention discloses a hydroxyl acrylic acid dispersion and a synthetic method thereof, and belongs to the technical field of coatings. The hydroxyl acrylic acid dispersion comprises the followingcomponents in parts by weight: 7-25 parts of air drying type resin, 1-6 parts of an acrylic carboxyl monomer, 6-12 parts of an acrylic hydroxyl monomer, 50-70 parts of other acrylic monomers, 1-10.5 parts of an initiator, 1-3 parts of a solvent, 3-6 parts of a neutralizing agent, 1-3 parts of a drier, and 100-200 parts of deionized water. The invention also disclosed the synthetic method of the above hydroxyl acrylic acid dispersion. The hydroxyl acrylic acid dispersion disclosed by the invention has a content of the solvent of 0.5-1%, and the content is far lower than that of a similar hydroxyl acrylic acid dispersion; and the synthetic method disclosed by the invention is simple and easy to operate, and can obtain the hydroxyl acrylic acid dispersion with a low content of solvent.

The invention relates to a construction method of a novel inner support of a foundation trench. The construction method includes that an existing transverse inner support beam is transformed into a transformative support beam through design and construction to serve as a part structure of a beam and/or a plate and/or a column of a main structure; after construction on the main structure related to and connected with the transformative support beam meets related requirements, the main structure connected with the transformative support beam is used for performing support exchanging with the transformative support beam; and a longitudinal support column of the transformative support beam is removed. With the construction method, not only requirements on a support structure but also on convenient and quick subsequent construction along with environmental factors, financial cost and other design and use can be met; when measured from integrated prospective, the construction method is prominent in economic efficiency, and environmental problem and difficulties in construction operation are considered in general.

The invention provides a reusable reserved hole reserving device and a construction method. The device comprises an inner sleeve; a top sealing cover plate used for sealing the top of the inner sleeveis fixedly installed at one end of the top of the inner sleeve; the exterior of inner sleeve is sleeved with a rubber pipe; a long screw rod is installed in the middle of the top sealing cover platein a threaded fit mode; a top hexagonal head is arranged at the top of the long screw rod; and the long screw rod is sleeved with a nut. By the adoption of a steel sleeve reserving device, after concrete pouring is completed, a steel sleeve can be smoothly pulled out from an upper portion and repeatedly used, and the steel sleeve can be used as a pipeline wall bushing after a top cover and a handle are detached in the later period, so that the positive boosting effect is achieved on on-site environmental protection and civilized construction.