Prefabricated lattice beam and construction method thereof
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A construction method and technology of lattice beams, applied in basic structure engineering, excavation, construction, etc., can solve the problems of difficult construction, long concrete pouring time, and long construction period, so as to achieve reasonable utilization and easy quality control , The effect of low construction cost
Pending Publication Date: 2018-07-24
CHINA CONSTR FIRST GRP THE SECOND CONSTR +1
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[0004] The purpose of the present invention is to provide a prefabricated lattice beam and its construction method to solve the problems of long concrete pouring time, long construction period, low construction efficiency, difficult construction and inability to realize industrialization after the installation of lattice beam reinforcement is completed.
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Embodiment 1
[0042] Embodiment 1, a prefabricated lattice beam provided by the present invention, the prefabricated lattice beam includes several unit lattice beams, and the unit lattice beam is composed of beams 1 and longitudinal beams 3 intersecting in the same position to form a grid-like beam body, and the unit The upper and lower surfaces of lattice beams are flush; see figure 1 shown. like Figure 3a , 3b As shown in and 3c, the beam body of the beam 1 is provided with first grooves 2 at intervals, the first groove 2 has three and its depth is equal to half of the height of the beam 1; the two ends of the beam 1 are respectively centered with the third groove 5 and The protrusion 6 is adapted to the third groove 5 and the protrusion 6 , and the depth of the third groove 5 is the same as the length of the protrusion 6 .
[0043] like Figure 2a , 2b As shown in , 2c, the longitudinal beam 3 is a concrete member with steel bars 8, and the cross section is rectangular. Groove 4; ...
Embodiment 2
[0055] Example 2, such as Figure 5a , 5b, 5c, a prefabricated lattice beam, the same as embodiment 1, the difference is: the cross beam 1 is pre-embedded with steel bars 8. The steel bar 8 can be connected by methods such as binding lap joint or welding or mechanical sleeve.
[0056] see also Image 6 , the unit cell beams are connected by steel bars 8 arranged in the beam 1; concrete is also poured at the joints of the steel bars 8.
[0057] The specific construction method is as follows:
[0058] Step 1, according to the design drawings, the beam 1 and the longitudinal beam 3 are prefabricated in the prefabrication factory;
[0059] Step 2, transporting the prefabricated beam 1 and longitudinal beam 3 to the construction site;
[0060] Step 3, stacking the prefabricated beams 1 and longitudinal beams 3 in the yard;
[0061] Step 4, according to the requirements of the construction drawing, perform measurement and positioning, level the slope, and construct anchor rods...
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Abstract
The invention discloses a prefabricated lattice beam and a construction method thereof. The prefabricated lattice beam comprises a plurality of unit lattice beams, the unit lattice beams are latticedbeam bodies formed by intersecting cross beams and longitudinal beams in a parity mode, first grooves are formed in the beam bodies of the cross beams at intervals, second grooves vertically connectedto the first grooves in a meshing mode are formed in the beam bodies of the longitudinal beams at intervals, and the first grooves coincide with the second grooves. Holes are formed at the bottoms ofthe first grooves and the second grooves and used for passing through anchor rods or anchor cables. The upper surfaces and the lower surfaces of the unit lattice beams are level after meshing the cross beams and the longitudinal beams, and the holes of the first grooves and the second grooves are located on the same axis. The main body part of the prefabricated lattice beam is completed in a pressing plant, construction site space and place are not occupied, the realization of industrialization is facilitated, and the number of workers in a construction site is reduced. The cross beams is partially cast-in-place, shortcomings such as size limitation and difficulty of field adjustment caused by fully-prefabricated lattice beams are overcome, the combination of partial cast-in-place and prefabrication is beneficial to the implementation of the prefabricated lattice beam.
Description
technical field [0001] The invention relates to the construction field of building slope, road and railway slope support, in particular to a prefabricated lattice beam and a construction method thereof. Background technique [0002] my country's terrain is high in the west and low in the east. Mountains, plateaus and hills account for about 67% of the land area. Natural disasters such as landslides and mudslides occur every year. With the acceleration of the construction pace, situations such as mountain excavation and grading are often encountered in civil construction. At present, in order to ensure the safety of construction and use, support measures must be taken for the slope. When traditional building slopes, road and railway slopes are supported by lattice beams, cast-in-place reinforced concrete is generally used. [0003] However, there are many problems in the use of cast-in-place construction: first, after the lattice beam reinforcement is installed, it takes a ...
Claims
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Application Information
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