CN105484403B - Assembly concrete two-way ribbed slab floor and its method of construction - Google Patents

Abstract

The prefabricated concrete two-way densely ribbed floor and its construction method belong to the technical field of construction engineering, including concrete strip slabs, precast concrete strip hollow slabs, precast concrete trough blocks, and precast concrete hollow blocks. There are four designs and components in total. Prefabrication and installation method of construction. The invention has simple production process and equipment, convenient lifting and installation, no template engineering, no need for plastering, reduced construction procedures, less steel bar binding workload, easy to ensure the binding quality of steel bars, improved construction efficiency, good appearance quality, smooth and clean , improve the construction working environment, and can significantly reduce construction costs; its precast concrete strip slabs and precast concrete strip hollow slabs have load-bearing functions during construction, and no support is required; its precast concrete trough blocks and precast concrete hollow blocks Support is required during construction, but less is required.

Description

Prefabricated concrete two-way ribbed floor and its construction method

technical field

The invention belongs to the technical field of construction engineering, and in particular relates to a prefabricated concrete two-way dense ribbed floor and a construction method thereof.

Background technique

Assembled concrete two-way ribbed floor for construction engineering, currently adopted technical solutions include:

1. Invention patent "a reinforced concrete assembled floor (patent number ZL200410100982.8)", this new type of assembled integral two-way densely ribbed hollow floor is composed of cast-in-situ concrete densely ribbed beams and silicon-calcium board assembled hollow boxes, Among them, the hollow box is assembled at the construction site from the top plate of silicon-calcium board, the prefabricated concrete bottom plate and the side board of silicon-calcium board. On the densely ribbed beam, the side slab of calcium silicate board plays the role of the side formwork of the densely ribbed beam during the construction process, while the concrete bottom slab is used as the ceiling of the floor. Assemble the hollow box at the construction site and install it between the densely ribbed beams bound with steel cages, then pour the concrete for the densely ribbed beams and the roof surface, cast-in-situ densely ribbed beams, cast-in-place panels, and prefabricated floor of the hollow box Form a whole to form a new type of integral two-way dense ribbed hollow floor.

2. Utility model patent "Modular mold for densely ribbed beams and slabs for construction (ZL200720022321.7)". The densely ribbed hollow floor is a densely ribbed floor with a box-shaped section. The beams are connected to form a beam-slab integrated whole. The composite slab consists of a prefabricated high-strength reinforced concrete roof, lightweight material side walls and a prefabricated high-strength reinforced concrete bottom slab. The rib beams are cast-in-place ordinary concrete, combined with composite slabs to form an integral floor.

The above two technical schemes of prefabricated concrete two-way dense ribbed floor need to be supported on site, and the sides of the rib beams need non-reusable side forms, and the top panel of the former scheme also needs non-reusable top formwork. These support and one-time input templates significantly increase the construction cost of the project, and also affect the work efficiency. Therefore, there is an urgent need for a novel technical solution in the prior art to solve this problem.

Contents of the invention

The technical problem to be solved by the present invention is: to provide a prefabricated concrete two-way dense ribbed floor and its construction method, which has simple production technology and equipment, convenient lifting and installation, free formwork, no need for plastering, and reduces construction procedures. The binding workload is less, the binding quality of steel bars is easy to ensure, and the construction efficiency is improved. It has load-bearing function during construction and does not need to be supported; although its prefabricated concrete trough blocks and prefabricated concrete hollow blocks need support during construction, they need less support.

The prefabricated concrete two-way ribbed floor is characterized by: including prefabricated concrete strip slabs, short-span direction rib beams, long-span direction rib beams, wedge-shaped grooves, concrete poured on site, long-span direction rib beam bottom reinforcement, long-span direction rib beams, and long-span direction rib beams. The top reinforcement of the rib beam in the span direction, the bottom reinforcement of the rib beam in the short span direction, the top reinforcement of the rib beam in the short span direction, the stirrups of the cast-in-place concrete rib beam, the waist reinforcement of the cast-in-place concrete rib beam, the support of the floor, the precast concrete strip hollow Bottom slab of slab, bottom slab, bottom slab reinforcement, precast concrete strip-shaped hollow slab, precast concrete trough block, bottom trough block of precast concrete hollow block, precast concrete hollow block;

The prefabricated concrete strip groove plate includes side ribs, end ribs, transverse ribs, flanges, transverse rib hollow holes, panels, prefabricated concrete, panel reinforcement, transverse rib stirrup erecting reinforcement, side ribs and end ribs. Steel bars, transverse rib stirrups, side rib bottom bars, side rib top bars;

The side ribs are vertical ribs on both sides of the length direction of the precast concrete strip-shaped slab, on both sides of the length direction of the precast concrete strip-shaped hollow slab, around the perimeter of the precast concrete trough block, and around the perimeter of the precast concrete hollow block;

The end ribs are vertical ribs at both ends of the prefabricated concrete strip-shaped slab and the length direction of the prefabricated concrete strip-shaped hollow slab;

The transverse ribs are vertical ribs in the middle of the precast concrete strip-shaped slab and the precast concrete strip-shaped hollow slab, and are arranged in the vertical direction of the length direction of the precast concrete strip-shaped slab and the prefabricated concrete strip-shaped hollow slab, and the number of settings is two or two or more;

The flange is arranged at the bottom of the side rib and extends outward;

The hollow hole of the transverse rib is arranged between two transverse ribs, and runs through the transverse direction of the precast concrete strip-shaped groove plate and the precast concrete strip-shaped hollow plate;

The panels are prefabricated concrete strip slabs, prefabricated concrete strip hollow slabs, prefabricated concrete trough blocks and concrete slabs on top of prefabricated concrete hollow blocks;

The prefabricated concrete is filled inside the prefabricated concrete strip slab, the prefabricated concrete strip hollow slab, the prefabricated concrete trough block and the prefabricated concrete hollow block;

There are two or more reinforcement bars on the panel, which are bidirectionally arranged inside the panel;

There are four or more erecting steel bars of the cross-rib stirrup, which are arranged inside the cross-rib along the horizontal direction in the plane of the cross-rib;

The longitudinal distribution of the side ribs and the end ribs is one or more, which are arranged inside the side ribs and the end ribs along the horizontal direction in the plane of the side ribs and the end ribs;

There are two or more transverse rib stirrups, which are arranged inside the transverse rib around the hollow hole of the transverse rib;

There are one or more steel bars at the bottom of the side ribs, which are arranged inside the side ribs along the bottom of the precast concrete strip-shaped groove plate and the precast concrete strip-shaped hollow slab in the length direction of the side ribs;

There is one steel bar at the top of the side rib, which is arranged inside the side rib along the top of the side rib length direction of the precast concrete strip groove plate and the precast concrete strip hollow slab;

The rib beam in the short-span direction is a rib beam arranged in the short-span direction of the prefabricated concrete two-way ribbed floor;

The rib beam in the long-span direction is a rib beam arranged in the long-span direction of the prefabricated concrete two-way ribbed floor;

The wedge-shaped groove is a wedge-shaped groove surrounded by the outer sides of two adjacent side ribs and the top surfaces of two adjacent flanges;

The concrete poured on site is the concrete poured on the wedge-shaped groove, the hollow hole of the transverse rib and the support of the floor at the engineering site;

The steel bar at the bottom of the rib beam in the long-span direction is a steel bar arranged at the bottom of the rib beam in the long-span direction of the prefabricated concrete two-way densely ribbed floor;

The steel bar at the top of the rib beam in the long-span direction is a steel bar arranged on the top of the rib beam in the long-span direction of the prefabricated concrete two-way densely ribbed floor;

The steel bar at the bottom of the rib beam in the short-span direction is a steel bar arranged at the bottom of the rib beam in the short-span direction of the prefabricated concrete two-way densely ribbed floor;

The steel bar at the top of the rib beam in the short-span direction is a steel bar arranged on the top of the rib beam in the short-span direction of the prefabricated concrete two-way densely ribbed floor;

The cast-in-place concrete rib beam stirrups are rib beam stirrups arranged along the wedge-shaped groove;

The cast-in-place concrete rib beam reinforcement is the rib beam reinforcement arranged along the wedge-shaped groove;

The support of the floor is the support around the prefabricated concrete two-way ribbed floor;

The bottom groove plate of the prefabricated concrete strip-shaped hollow slab includes side ribs, end ribs, transverse ribs, flanges, precast concrete, erecting reinforcement of transverse rib stirrups, distribution reinforcement of side ribs and end ribs, transverse rib stirrups , side rib bottom reinforcement, bottom plate, bottom plate reinforcement;

The bottom plate refers to the prefabricated concrete strip hollow slab and the concrete slab at the bottom of the prefabricated concrete hollow block;

There are two or more reinforcement bars on the bottom plate, which are bidirectionally arranged inside the bottom plate;

The prefabricated concrete strip-shaped hollow slab includes the bottom groove plate of the prefabricated concrete strip-shaped hollow slab, the panel, the panel reinforcement and the top reinforcement of the side rib;

The precast concrete trough block includes side ribs, flanges, panels, precast concrete, panel reinforcement, side ribs and distribution reinforcement of end ribs;

The bottom trough block of the precast concrete hollow block includes side ribs, flanges, precast concrete, side ribs and end rib distribution reinforcement, bottom plate, and bottom plate reinforcement;

The prefabricated concrete hollow block includes a bottom groove block of the prefabricated concrete hollow block, a panel and panel reinforcement.

The construction method of the prefabricated concrete two-way ribbed floor is characterized in that: there are four types, each type includes three steps,

The first type, prefabricated concrete two-way ribbed floor with prefabricated concrete strip slabs

Step 1. Design of prefabricated concrete two-way ribbed floor

Arrange precast concrete strip-shaped slabs along the short span direction of the prefabricated concrete two-way densely ribbed floor, design precast concrete strip-shaped slabs according to the construction stage, and design the prefabricated concrete two-way densely ribbed floor according to the use stage;

Design in use phase:

The short-span direction rib beam bottom reinforcement, short-span direction rib beam top reinforcement, cast-in-situ concrete rib beam stirrups, and in-situ poured concrete placed in the side ribs, flanges and wedge-shaped grooves are short-span direction rib beams;

The transverse ribs, transverse rib stirrups, bottom reinforcement of long-span direction rib beams, top reinforcement of long-span direction rib beams and on-site poured concrete in the hollow holes of transverse ribs are taken as the long-span direction ribs beam;

Step 2. Fabrication of prefabricated concrete strip-shaped slabs

Arrange the bottom formwork and side formwork according to the preset size of the precast concrete strip-shaped slab, bind the panel reinforcement, the erection reinforcement of the transverse rib stirrup, the distribution reinforcement of the side rib and the end rib, the transverse rib stirrup, and the bottom reinforcement of the side rib and the top reinforcement of the side ribs, put two or more hole-forming molds into the hollow holes of the transverse ribs, pour precast concrete, remove the hole-forming molds and side forms of the hollow holes of the transverse ribs before the final setting of the precast concrete, and cure them until the prefabricated After the concrete strength reaches 15MPa ~ 30MPa, the prefabricated concrete strip groove plate is demoulded and stacked;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the preset size of the prefabricated concrete double-ribbed floor, the formwork and support at the support of the floor are arranged, and two or more precast concrete strip grooves are placed; For the joints in the wedge-shaped grooves at the slab joints, bind one or two steel bars at the bottom of the rib beam in the short-span direction, bind two or more steel bars at the top of the rib beam in the short-span direction, and bind the cast-in-place concrete rib beam hoops in the short-span direction If there are more than two reinforcements, bind the cast-in-place concrete rib beam waist reinforcement; along the hollow hole of the transverse rib continuous through the precast concrete strip groove plate, insert and bind one or two steel bars at the bottom of the rib beam in the long-span direction, and simultaneously insert and bind the long-span rib beam. One or more steel bars at the top of the rib beam in the span direction; pour the concrete poured on site; after curing until the strength of the concrete poured on site reaches 15MPa-40MPa, the installation and construction of the prefabricated concrete two-way dense ribbed floor is completed;

The second type, prefabricated concrete two-way ribbed floor with prefabricated concrete strip-shaped hollow slabs

Step 1. Design of prefabricated concrete two-way ribbed floor

Arrange precast concrete strip-shaped hollow slabs along the short span direction of the prefabricated concrete two-way dense ribbed floor, design precast concrete strip-shaped hollow slabs according to the construction stage, and design the prefabricated concrete two-way densely ribbed floor according to the use stage;

Design in use phase:

The short-span direction rib beam bottom reinforcement, short-span direction rib beam top reinforcement, cast-in-situ concrete rib beam stirrups, and in-situ poured concrete placed in the side ribs, flanges and wedge-shaped grooves are short-span direction rib beams;

The transverse ribs arranged continuously through the precast concrete strip-shaped hollow slab, the transverse rib stirrups, the bottom reinforcement of the long-span rib beam, the top reinforcement of the long-span rib beam and the concrete poured in the hollow hole of the transverse rib are taken as the long-span direction rib beam;

Step 2. Fabrication of precast concrete strip-shaped hollow slabs

According to the preset size of the bottom groove plate of the precast concrete strip-shaped hollow slab, arrange the bottom formwork and side formwork, bind the vertical reinforcement of the transverse rib stirrup, the distribution reinforcement of the side rib and the end rib, the transverse rib stirrup, and the bottom of the side rib For steel bars and floor steel bars, put two or more hole-forming molds for the hollow holes of the transverse ribs, pour precast concrete, remove the hole-forming molds for the hollow holes of the transverse ribs before the final setting of the precast concrete, and cure until the strength of the precast concrete reaches 15MPa After ~30MPa, use a crane to lift the bottom groove plate of the prefabricated concrete strip-shaped hollow slab, remove the side formwork and bottom formwork, and bind the steel bars at the top of the side ribs; at the same time, arrange the precast concrete strip-shaped hollow slab at another station The bottom form and side form of the slab panel, binding the panel reinforcement, inserting the hole-forming mold of two or more transverse rib hollow holes, pouring the precast concrete of the panel, and using the crane to place the prefabricated concrete strip hollow slab The bottom groove plate of the precast concrete strip-shaped hollow slab is hoisted to this station, and the bottom groove plate and the face plate of the precast concrete strip-shaped hollow slab are stacked together to become an overturned precast concrete strip-shaped hollow slab. Hole forming mould, after curing until the precast concrete strength of the panel reaches 15MPa~30MPa, the side formwork is removed, and the precast concrete strip-shaped hollow slab is demoulded, turned over and stacked using a turning machine;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the preset size of the prefabricated concrete double-ribbed floor, the formwork and support at the support of the floor are arranged, and two or more precast concrete strip-shaped hollow slabs are placed; the precast concrete strip-shaped hollow is sealed For the joints in the wedge-shaped grooves at the slab joints, bind one or two steel bars at the bottom of the rib beam in the short-span direction, bind two or more steel bars at the top of the rib beam in the short-span direction, and bind the cast-in-place concrete rib beam hoops in the short-span direction If there are more than two reinforcements, bind the cast-in-place concrete rib beam waist reinforcement; insert and bind one or two reinforcement bars at the bottom of the rib beam in the long-span direction along the hollow hole of the transverse rib that runs continuously through the precast concrete strip-shaped hollow slab, and simultaneously insert and bind the long-span rib beam. One or more steel bars at the top of the rib beam in the span direction; pour the concrete poured on site; after curing until the strength of the concrete poured on site reaches 15MPa-40MPa, the installation and construction of the prefabricated concrete two-way dense ribbed floor is completed;

The third type, prefabricated concrete two-way ribbed floor with prefabricated concrete trough blocks

Step 1. Design of prefabricated concrete two-way ribbed floor

According to the size of the prefabricated concrete two-way ribbed floor, two-way arrangement and design of prefabricated concrete channel blocks; according to the design of the cast-in-place concrete two-way densely ribbed floor;

The short-span direction rib beam bottom reinforcement, short-span direction rib beam top reinforcement, cast-in-situ concrete rib beam stirrups, and site-cast concrete placed in the short-span direction side ribs, flanges and wedge-shaped grooves are short-span direction ribs beam;

The bottom reinforcement of the long-span direction rib beam, the top reinforcement of the long-span direction rib beam, the stirrup of the cast-in-place concrete rib beam, and the concrete poured on site are taken as the long-span direction rib beam;

Step 2. Production of prefabricated concrete trough blocks

According to the design requirements of the precast concrete trough block, the bottom formwork and side formwork are arranged, the steel bars of the panel and the distributed steel bars of the side ribs and end ribs are bound, and the precast concrete is poured. After the precast concrete strength reaches 15MPa~30MPa, the precast concrete Demoulding and stacking of precast concrete trough blocks;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the design requirements of the prefabricated concrete two-way densely ribbed floor, formwork and support at the support of the floor are arranged, and the corner points of every four prefabricated concrete channel blocks in the middle of the assembled concrete two-way densely ribbed floor are arranged. Support, hang and arrange four or more precast concrete trough blocks; seal the joints in the wedge-shaped grooves at the joints of the precast concrete trough blocks, bind one or more steel bars at the bottom of the rib beam in the short span direction, and bind Two or more steel bars at the top of the rib beam in the short-span direction, two or more stirrups for the cast-in-place concrete rib beam in the short-span direction, one or more steel bars at the bottom of the rib beam in the long-span direction, and one or more steel bars at the top of the rib beam in the long-span direction Two or more, bind more than two cast-in-place concrete rib beam stirrups in the long-span direction, bind cast-in-place concrete rib beam waist bars, and pour in-situ concrete; , the installation and construction of the prefabricated concrete two-way ribbed floor is completed;

The fourth type, prefabricated concrete two-way ribbed floor with prefabricated concrete hollow blocks

Step 1. Design of prefabricated concrete two-way ribbed floor

According to the size of prefabricated concrete two-way ribbed floor, two-way arrangement and design of precast concrete hollow block; according to the design of cast-in-place concrete two-way dense ribbed floor;

The short-span direction rib beam bottom reinforcement, short-span direction rib beam top reinforcement, cast-in-situ concrete rib beam stirrups, and site-cast concrete placed in the short-span direction side ribs, flanges and wedge-shaped grooves are short-span direction ribs beam;

The bottom reinforcement of the long-span direction rib beam, the top reinforcement of the long-span direction rib beam, the stirrup of the cast-in-place concrete rib beam, and the concrete poured on site are taken as the long-span direction rib beam;

Step 2. Production of precast concrete hollow blocks

According to the design requirements of the bottom trough block of the precast concrete hollow block, the bottom formwork and side formwork are arranged, the distributed steel bars of the side ribs and end ribs and the bottom plate steel bars are bound, and the precast concrete is poured. After curing until the strength of the precast concrete reaches 15MPa ~ 30MPa, Remove the side formwork, use a crane to lift the prefabricated concrete hollow block at the bottom of the trough block to remove the bottom formwork; at the same time, arrange the bottom formwork and side formwork of the panel of the precast concrete hollow block at another station, and bind the panel reinforcement , pour the precast concrete of the panel, use the crane to hoist the bottom trough block of the prefabricated concrete hollow block to this station, and stack the bottom trough block and the panel of the precast concrete hollow block together to form a precast Concrete hollow block, after curing until the precast concrete strength of the panel reaches 15MPa~30MPa, the side formwork is removed, and the precast concrete hollow block is demoulded, turned over and stacked using a turning machine;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the design requirements of the prefabricated concrete two-way densely ribbed floor, the formwork and support at the support of the floor are arranged, and the support at the intersection point of every four prefabricated concrete hollow blocks in the middle of the assembled concrete two-way densely ribbed floor is arranged , hang and arrange four or more precast concrete hollow blocks; seal the joints in the wedge-shaped grooves at the joints of the precast concrete hollow blocks, bind one or more steel bars at the bottom of the rib beam in the short-span direction, and bind the short-span direction Two or more steel bars at the top of the rib beam, two or more stirrups of cast-in-place concrete rib beams in the short-span direction, one or more steel bars at the bottom of the rib beam in the long-span direction, and two or more steel bars at the top of the rib beam in the long-span direction More than two, bind more than two cast-in-place concrete rib beam stirrups in the long-span direction, bind cast-in-place concrete rib beam waist bars, and pour in-situ concrete; The installation and construction of the concrete two-way ribbed floor is completed.

The prefabricated concrete strip-shaped slab is a concrete strip-shaped slab provided with hollow holes in transverse ribs or a prestressed concrete strip-shaped slab.

The prefabricated concrete strip-shaped hollow slab is a concrete strip-shaped hollow slab provided with transverse rib hollow holes or a prestressed concrete strip-shaped hollow slab.

Through the above design scheme, the present invention can bring the following beneficial effects: the prefabricated concrete two-way ribbed floor and its construction method have simple production technology and equipment, convenient lifting and installation, free formwork engineering, no need for plastering, and reduce In the construction process, the workload of steel bar binding is less, the quality of steel bar binding is easy to ensure, the construction efficiency is improved, the appearance quality is good, smooth and clean, the construction work environment is improved, and the construction cost can be significantly reduced; its prefabricated concrete strip groove plate and prefabricated concrete strip The shaped hollow slab has a load-bearing function during construction and does not need to be supported; although its prefabricated concrete trough block and prefabricated concrete hollow block need support during construction, they need less support.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is the schematic diagram of the template diagram of the plan view of the prefabricated concrete strip-shaped slab of the present invention.

Fig. 2 is a schematic cross-sectional view of the prefabricated concrete strip-shaped slab I-I of the present invention.

Fig. 3 is a schematic sectional view of II-II of the prefabricated concrete strip-shaped slab of the present invention.

Fig. 4 is a schematic diagram of a reinforcement diagram of a plan view of a precast concrete strip-shaped slab of the present invention.

Fig. 5 is a schematic cross-sectional view of III-III of the prefabricated concrete strip-shaped slab of the present invention.

Fig. 6 is a schematic view of the section IV-IV of the prefabricated concrete strip channel plate of the present invention.

Fig. 7 is a schematic diagram of the formwork of the plan view of the prefabricated concrete two-way ribbed floor assembled by prefabricated concrete strip-shaped slabs according to the present invention.

Fig. 8 is a schematic cross-section V-V of the prefabricated concrete two-way ribbed floor assembled with prefabricated concrete strip-shaped slabs according to the present invention.

Fig. 9 is a schematic cross-sectional view of VI-VI of the prefabricated concrete two-way ribbed floor assembled with prefabricated concrete strip-shaped slabs according to the present invention.

Fig. 10 is a schematic diagram of reinforcement diagram of the plan view of the prefabricated concrete two-way ribbed floor assembled by prefabricated concrete strip-shaped slabs according to the present invention.

Fig. 11 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor VII-VII assembled with prefabricated concrete strip-shaped slabs according to the present invention.

Fig. 12 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor Ⅷ-Ⅷ of the present invention assembled with prefabricated concrete strip-shaped slabs.

Fig. 13 is a partial enlarged view G of the V-V cross-sectional schematic diagram of the prefabricated concrete two-way ribbed floor assembled with prefabricated concrete strip-shaped groove slabs according to the present invention.

Fig. 14 is a partially enlarged view H of the VI-VI cross-sectional schematic diagram of the prefabricated concrete two-way ribbed floor assembled with prefabricated concrete strip-shaped slabs according to the present invention.

Fig. 15 is a partial enlarged view J of the plan view of the reinforcement diagram of the prefabricated concrete two-way densely ribbed floor plan assembled by prefabricated concrete strip-shaped slabs in the present invention.

Fig. 16 is an example of precast concrete of the present invention.

Fig. 17 is an illustration of concrete poured in situ according to the present invention.

Fig. 18 is a schematic diagram of the formwork diagram of the plan view of the bottom groove plate of the precast concrete strip-shaped hollow slab of the present invention.

Fig. 19 is a schematic cross-sectional view of the bottom groove plate IX-IX of the prefabricated concrete strip-shaped hollow slab of the present invention.

Fig. 20 is a schematic cross-sectional view X-X of the bottom groove plate of the prefabricated concrete strip-shaped hollow slab of the present invention.

Fig. 21 is a schematic diagram of reinforcement diagram of the plan view of the bottom groove plate of the precast concrete strip-shaped hollow slab of the present invention.

Fig. 22 is a cross-sectional schematic diagram XI-XI of the bottom groove plate of the prefabricated concrete strip-shaped hollow slab of the present invention.

Fig. 23 is a schematic cross-sectional view of XII-XII of the bottom groove plate of the precast concrete strip-shaped hollow slab of the present invention.

Fig. 24 is a schematic plan view of the panel of the precast concrete strip-shaped hollow slab of the present invention.

Fig. 25 is a schematic cross-sectional view of panel XIII-XIII of the prefabricated concrete strip-shaped hollow slab of the present invention.

Fig. 26 is a schematic plan view of the bottom groove plate and the panel of the precast concrete strip-shaped hollow slab turned over and stacked according to the present invention.

Fig. 27 is a XIV-XIV cross-sectional schematic diagram of the folded and stacked bottom groove plate and panel of the precast concrete strip-shaped hollow slab of the present invention.

Fig. 28 is a XV-XV cross-sectional schematic diagram of the folded and stacked bottom groove plate and panel of the precast concrete strip-shaped hollow slab of the present invention.

Fig. 29 is a schematic plan view of the precast concrete strip-shaped hollow slab of the present invention.

Fig. 30 is a schematic cross-sectional view of XVI-XVI of the prefabricated concrete strip-shaped hollow slab of the present invention.

Fig. 31 is a schematic cross-sectional view of XVII-XVII of the prefabricated concrete strip-shaped hollow slab of the present invention.

Fig. 32 is a schematic diagram of the formwork of the plan view of the prefabricated concrete two-way ribbed floor assembled by prefabricated concrete strip-shaped hollow slabs according to the present invention.

Fig. 33 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XⅧ-XⅧ assembled by prefabricated concrete strip-shaped hollow slabs according to the present invention.

Fig. 34 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XIX-XIX assembled by prefabricated concrete strip-shaped hollow slabs according to the present invention.

Fig. 35 is a schematic diagram of the reinforcement diagram of the plan view of the prefabricated concrete two-way ribbed floor assembled by prefabricated concrete strip-shaped hollow slabs according to the present invention.

Fig. 36 is a schematic cross-sectional view of XX-XX of the prefabricated concrete two-way ribbed floor assembled with prefabricated concrete strip-shaped hollow slabs according to the present invention.

Fig. 37 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXI-XXI assembled by prefabricated concrete strip-shaped hollow slabs according to the present invention.

Fig. 38 is a schematic diagram of the formwork diagram of the plan view of the precast concrete channel block of the present invention.

Fig. 39 is a schematic cross-sectional view of the prefabricated concrete trough block XXII-XXII of the present invention.

Fig. 40 is a schematic diagram of a reinforcement diagram of a plan view of a precast concrete trough block of the present invention.

Fig. 41 is a schematic cross-sectional view of the prefabricated concrete trough block XXIII-XXIII of the present invention.

Fig. 42 is a schematic diagram of the formwork of the plan view of the prefabricated concrete two-way ribbed floor assembled by prefabricated concrete trough blocks in the present invention.

Fig. 43 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXIV-XXIV assembled with prefabricated concrete trough blocks of the present invention.

Fig. 44 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXⅤ-XXⅤ assembled by prefabricated concrete trough blocks in the present invention.

Fig. 45 is a schematic diagram of reinforcement diagram of the plan view of the prefabricated concrete two-way ribbed floor assembled by prefabricated concrete trough blocks of the present invention.

Fig. 46 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXVI-XXVI assembled by prefabricated concrete trough blocks of the present invention.

Fig. 47 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXVII-XXVII of the present invention assembled with prefabricated concrete trough blocks.

Fig. 48 is a schematic diagram of the formwork of the plan view of the bottom groove block of the prefabricated concrete hollow block of the present invention.

Fig. 49 is a schematic cross-sectional view of the bottom groove block XXⅧ-XXⅧ of the prefabricated concrete hollow block of the present invention.

Fig. 50 is a schematic diagram of reinforcement diagram of the plan view of the bottom groove block of the prefabricated concrete hollow block of the present invention.

Fig. 51 is a schematic cross-sectional view of the bottom groove block XXIX-XXIX of the prefabricated concrete hollow block of the present invention.

Fig. 52 is a schematic plan view of a panel of a precast concrete hollow block of the present invention.

Fig. 53 is a schematic cross-sectional view of the panel XXX-XXX of the precast concrete hollow block of the present invention.

Fig. 54 is a schematic plan view of the bottom grooved block and the panel of the prefabricated concrete hollow block of the present invention turned over and stacked.

Fig. 55 is a XXXI-XXXI schematic cross-sectional view of the bottom trough-shaped block and the panel of the precast concrete hollow block of the present invention turned over and stacked.

Fig. 56 is a schematic plan view of the prefabricated concrete hollow block of the present invention.

Fig. 57 is a schematic cross-sectional view of XXXII-XXXII of the prefabricated concrete hollow block of the present invention.

Fig. 58 is a schematic diagram of the formwork diagram of the plan view of the prefabricated concrete two-way ribbed floor assembled by prefabricated concrete hollow blocks according to the present invention.

Fig. 59 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXXⅢ-XXXⅢ assembled by prefabricated concrete hollow blocks according to the present invention.

Fig. 60 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXXIV-XXXIV assembled by prefabricated concrete hollow blocks according to the present invention.

Fig. 61 is a schematic diagram of the plan view of the prefabricated concrete two-way densely ribbed floor of the present invention assembled with prefabricated concrete hollow blocks.

Fig. 62 is a schematic cross-sectional view of the prefabricated concrete two-way ribbed floor XXXⅤ-XXXⅤ assembled by prefabricated concrete hollow blocks according to the present invention.

Fig. 63 is a cross-sectional schematic diagram of XXXⅥ-XXXⅥ prefabricated concrete two-way ribbed floor assembled by prefabricated concrete hollow blocks according to the present invention.

In the figure, 1-precast concrete strip groove plate, 2-side rib, 3-end rib, 4-transverse rib, 5-flange, 6-transverse rib hollow hole, 7-panel, 8-precast concrete, 9- Panel reinforcement, 10- erecting reinforcement of transverse rib stirrup, 11- distribution reinforcement of side rib and end rib, 12- transverse rib stirrup, 13- bottom reinforcement of side rib, 14- top reinforcement of side rib, 15- short span Directional rib beam, 16-long-span direction rib beam, 17-wedge groove, 18-site poured concrete, 19-long-span direction rib beam bottom reinforcement, 20-long-span direction rib beam top reinforcement, 21-short-span direction rib Beam bottom reinforcement, 22-short-span direction rib beam top reinforcement, 23-cast-in-place concrete rib beam stirrups, 24-cast-in-place concrete rib beam waist reinforcement, 25-floor support, 26-precast concrete strip hollow slab 27-bottom slab, 28-bottom slab reinforcement, 29-prefabricated concrete strip hollow slab, 30-prefabricated concrete trough block, 31-bottom trough block of prefabricated concrete hollow block, 32-prefabricated concrete hollow block.

detailed description

The prefabricated concrete two-way densely ribbed floor and its manufacturing method are shown in Figures 1 to 63, including prefabricated concrete strip slabs 1, side ribs 2, end ribs 3, transverse ribs 4, flanges 5, and hollow transverse ribs Hole 6, panel 7, precast concrete 8, panel reinforcement 9, erection reinforcement of transverse rib stirrup 10, distribution reinforcement of side rib and end rib 11, transverse rib stirrup 12, side rib bottom reinforcement 13, side rib top reinforcement 14. Short-span direction rib beam 15, long-span direction rib beam 16, wedge-shaped groove 17, concrete poured on site 18, long-span direction rib beam bottom reinforcement 19, long-span direction rib beam top reinforcement 20, short-span direction rib beam bottom Steel bar 21, short-span direction rib beam top steel bar 22, cast-in-place concrete rib beam stirrup 23, cast-in-place concrete rib beam waist bar 24, floor support 25, bottom groove plate 26 of precast concrete strip-shaped hollow slab, bottom plate 27. Bottom plate reinforcement 28, precast concrete strip-shaped hollow slab 29, precast concrete trough-shaped block 30, bottom trough-shaped block 31 of precast concrete hollow block, precast concrete hollow block 32; the precast concrete strip-shaped slab 1 includes side ribs 2. End rib 3, transverse rib 4, flange 5, transverse rib hollow hole 6, panel 7, precast concrete 8, panel reinforcement 9, transverse rib stirrup erection reinforcement 10, side rib and end rib distribution reinforcement 11 , transverse rib stirrup 12, side rib bottom reinforcement 13, side rib top reinforcement 14; said side rib 2 refers to the two sides of the length direction of the prefabricated concrete strip groove plate 1, the two sides of the length direction of the prefabricated concrete strip hollow plate 29, Prefabricated concrete trough block 30 periphery and prefabricated concrete hollow block 32 peripheries vertical rib; Described end rib 3 refers to prefabricated concrete strip groove plate 1 and prefabricated concrete strip hollow plate 29 longitudinal ribs at both ends of the vertical direction; The transverse rib 4 refers to the vertical rib in the middle of the precast concrete strip slab 1 and the precast concrete strip hollow slab 29, which is arranged in the vertical direction of the precast concrete strip slab 1 and the precast concrete strip hollow slab 29 lengthwise , the number of setting is two or more; the flange 5 is arranged at the bottom of the side rib 2, and extends outward from the bottom of the side rib 2; the hollow hole 6 of the transverse rib is arranged between two transverse ribs, through which The transverse direction of precast concrete strip slab 1 and precast concrete strip hollow slab 29; said panel 7 refers to precast concrete strip slab 1, precast concrete strip hollow slab 29, precast concrete trough block 30 and precast concrete hollow The concrete slab at the top of the block 32; the prefabricated concrete 8 is filled in the inside of the prefabricated concrete strip slab 1, the prefabricated concrete strip hollow slab 29, the prefabricated concrete trough block 30 and the prefabricated concrete hollow block 32; the panel reinforcement 9 There are two or more, bidirectionally arranged inside the panel 7; the erecting steel bars 10 of the transverse rib stirrup are four or more, arranged on the horizontal direction of the transverse rib 4 along the horizontal direction in the plane of the transverse rib 4 Inside; the side ribs and the end ribs are longitudinally distributed with one or more steel bars 11, which are arranged inside the side ribs 2 and the end ribs 3 along the horizontal direction in the plane of the side ribs 2 and the end ribs 3; the transverse rib stirrups 12 is two or more, which are arranged inside the transverse rib 4 around the transverse rib hollow hole 6; the bottom reinforcing bar of the side rib 13 is one or more, and the bottom of the side rib 2 along the length direction of the precast concrete strip slab 1 and the precast concrete strip hollow slab 29 is arranged inside the side rib 2; the top reinforcement 14 of the side rib is one, along the The top of the side rib 2 along the length direction of the prefabricated concrete strip slab 1 and the precast concrete strip hollow slab 29 is arranged inside the side rib 2; the rib beam 15 in the short span direction is a short span of the prefabricated concrete two-way densely ribbed floor The rib beams arranged in the direction; the rib beams 16 in the long-span direction are rib beams arranged in the long-span direction of the prefabricated concrete two-way ribbed floor; the wedge-shaped grooves 17 are the outer sides of two adjacent side ribs 2 and the two adjacent The top surface of each flange 5 is surrounded by a wedge-shaped groove; the concrete 18 cast on site is the concrete poured at the bearing 25 places of the wedge-shaped groove, the hollow hole of the transverse rib and the floor at the engineering site; the long-span The bottom steel bar 19 of the direction rib beam is the steel bar arranged at the bottom of the long-span direction rib beam 16 of the prefabricated concrete two-way densely ribbed floor; the top steel bar 20 of the long-span direction rib beam is arranged on the long-span The reinforcing bar at the top of direction rib beam 16; the reinforcing bar at the bottom of the short-span direction rib beam 21 is the reinforcing bar arranged at the bottom of the short-span direction rib beam 15 of the prefabricated concrete two-way dense rib floor; the reinforcing bar at the top of the short-span direction rib beam 22 is The reinforcing bar that is arranged on the top of the rib beam 15 in the short-span direction of the prefabricated concrete two-way densely ribbed floor; the stirrup 23 of the cast-in-place concrete rib beam is the stirrup of the rib beam arranged along the wedge-shaped groove 17; the cast-in-place concrete rib Beam waist reinforcement 24 is the waist reinforcement of the rib beam arranged along the wedge-shaped groove 17; the support 25 of the floor is the support around the periphery of the prefabricated concrete two-way dense rib floor; the bottom of the precast concrete strip-shaped hollow slab Slot plate 26 comprises side rib 2, end rib 3, transverse rib 4, flange 5, prefabricated concrete 8, erecting reinforcing bar 10 of transverse rib stirrup, distribution reinforcing bar 11 of side rib and end rib, transverse rib stirrup 12, Side rib bottom reinforcing bar 13, base plate 27, base plate reinforcing bar 29; Described base plate 27 refers to the concrete plate at the bottom of prefabricated concrete strip hollow slab 29 and prefabricated concrete hollow block 32; Described base plate reinforcing bar 28 is two or more, Two-way is arranged in the inside of base plate 27; Described prefabricated concrete strip-shaped hollow plate 29 comprises the bottom groove plate 26 of prefabricated concrete strip-shaped hollow slab, panel 7, panel reinforcing bar 9 and side rib top reinforcing bar 14; Described prefabricated concrete channel block 30 includes side ribs 2, flanges 5, panels 7, precast concrete 8, panel steel bars 9, side ribs and distribution reinforcement 11 of end ribs; the bottom groove block 31 of the precast concrete hollow block includes side ribs 2, flanges 5. Prefabricated concrete 8, distributed steel bars 11 of side ribs and end ribs, bottom plate 27, bottom plate steel bars 28; the precast concrete hollow block 32 includes the bottom groove block 31, panel 7 and panel reinforcement 9 of the precast concrete hollow block.

The present invention has four types, and each type comprises three steps, and the operating steps of concrete implementation are as follows:

The first type, as shown in Figures 1 to 17,

Step 1. Design of prefabricated concrete two-way ribbed floor

Arrange precast concrete strip-shaped slabs 1 along the short span direction of the prefabricated concrete two-way densely ribbed floor, design precast concrete strip-shaped slabs 1 according to the construction stage, and design the prefabricated concrete two-way densely ribbed floor according to the use stage; use stage In the design of the rib beam 2, the flange 5 and the wedge-shaped groove 17, the bottom reinforcement 21 of the short-span rib beam, the top reinforcement 22 of the short-span rib beam, the cast-in-situ concrete rib beam stirrup 23, and the cast-in-place concrete 18 is the short-span direction rib beam 15; take the transverse rib 4, transverse rib stirrup 12, long-span direction rib beam bottom reinforcement 19, long-span direction rib beam top reinforcement 20 and transverse The concrete 18 poured on site in the rib hollow hole 6 is the long-span direction rib beam 16;

Step 2. Fabrication of prefabricated concrete strip slab 1

According to the design requirements of the prefabricated concrete strip groove plate 1, the bottom formwork and the side formwork are arranged, and the panel reinforcement 9, the erection reinforcement 10 of the transverse rib stirrup, the distribution reinforcement 11 of the side rib and the end rib, the transverse rib stirrup 12, The reinforcement bars 13 at the bottom of the side ribs and the reinforcement bars 14 at the top of the side ribs are put into two or more hole-forming molds of the hollow holes 6 of the transverse ribs, and the precast concrete 8 is poured, and the formation of the hollow holes 6 of the transverse ribs is removed before the final setting of the precast concrete 8 . Hole mold and side form, after curing until the strength of precast concrete 8 reaches 15MPa ~ 30MPa, demould the prefabricated precast concrete strip slab 1 and stack it;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the design requirements of the prefabricated concrete two-way densely ribbed floor, formwork and supports at 25 places of the floor support are arranged, and two or more prefabricated concrete strip-shaped slabs are hoisted and placed; 1 In the wedge-shaped groove 17 at the joint, seal the joint to prevent slurry leakage, bind one or two steel bars 21 at the bottom of the rib beam in the short-span direction, two or more steel bars 22 at the top of the rib beam in the short-span direction, More than two cast-in-place concrete rib beam stirrups 23, cast-in-place concrete rib beam waist reinforcement 24; along the precast concrete strip groove plate 1 continuous penetrating transverse rib hollow hole 6, interspersed and bound the rib beam bottom reinforcement 19 in the long-span direction One or two, one or more steel bars 20 at the top of the rib beam in the long-span direction; pouring in-situ concrete 18; after curing until the strength of the in-situ concrete 18 reaches 15MPa-40MPa, the installation of the prefabricated concrete two-way dense ribbed floor and construction is complete;

The prefabricated concrete strip slab 1 is a concrete strip slab or a prestressed concrete strip slab provided with a transverse rib hollow hole 6;

The second type, as shown in Figure 18 to Figure 37,

Step 1. Design of prefabricated concrete two-way ribbed floor

Arrange precast concrete strip-shaped hollow slabs 29 along the short span direction of the prefabricated concrete two-way dense ribbed floor, design the precast concrete strip-shaped hollow slabs 29 according to the construction stage, and design the prefabricated concrete two-way densely ribbed floor according to the use stage; In the design of the rib beam 2, the flange 5 and the wedge-shaped groove 17, the bottom reinforcement 21 of the short-span rib beam, the top reinforcement 22 of the short-span rib beam, the cast-in-situ concrete rib beam stirrup 23, and the cast-in-place concrete 18 is the rib beam 15 in the short-span direction; the transverse rib 4, the transverse rib stirrup 4, the bottom reinforcement bar 19 of the long-span direction rib beam, the top reinforcement bar 20 of the long-span direction rib beam and the transverse The concrete 18 poured on site in the rib hollow hole 6 is the long-span direction rib beam 16;

Step 2, the manufacture of prefabricated concrete strip-shaped hollow slab 29

According to the design requirements of the bottom groove plate 26 of the prefabricated concrete strip-shaped hollow slab, the bottom form and the side form are arranged, and the erecting reinforcement 10 of the transverse rib stirrup, the distribution reinforcement 11 of the side rib and the end rib, the transverse rib stirrup 12, The bottom steel bars 13 of the side ribs and the bottom plate steel bars 28 are placed into two or more hole-forming molds for the hollow holes 6 of the transverse ribs, and the precast concrete 8 is poured, and the hole-forming molds for the hollow holes 6 of the transverse ribs are removed before the final setting of the precast concrete 8 After curing until the strength of the precast concrete 8 reaches 15MPa-30MPa, use a crane to lift the bottom groove plate 26 of the prefabricated concrete strip-shaped hollow slab to remove the side formwork and bottom formwork, and bind the top steel bars 14 of the side ribs, and then At the same time, arrange the bottom form and the side form of the panel 7 of the prefabricated concrete strip-shaped hollow slab 29 at another station, bind the panel steel bars 9, insert the hole-forming molds of two or more transverse rib hollow holes 6, and pour the panel 7 of the prefabricated concrete 8, use a crane to hoist the bottom groove plate 26 of the prefabricated concrete strip-shaped hollow slab to this station, and stack the bottom groove plate 26 and the panel 7 of the prefabricated concrete strip-shaped hollow slab together to form a For the precast concrete strip-shaped hollow slab 29 that is turned over, the hole-forming mold of the transverse rib hollow hole 6 is removed before the final setting of the precast concrete 8, and after curing until the strength of the precast concrete 8 of the panel 7 reaches 15MPa-30MPa, the side formwork is removed and used The overturning machine demoulds, overturns and stacks the precast concrete strip-shaped hollow slab 29;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the design requirements of the prefabricated concrete two-way densely ribbed floor, formwork and supports at the support 25 of the floor are arranged, and two or more prefabricated concrete strip-shaped hollow slabs 29 are hoisted and placed; 29 In the wedge-shaped groove 17 at the joint, seal the joint to prevent slurry leakage, bind one or two steel bars 21 at the bottom of the rib beam in the short-span direction, two or more steel bars 22 at the top of the rib beam in the short-span direction, and tie up two or more steel bars in the short-span direction. More than two cast-in-place concrete rib beam stirrups 23, cast-in-place concrete rib beam waist bars 24; transverse rib hollow holes 6 continuous through the precast concrete strip-shaped hollow slab 29, interspersed and tied with long-span direction rib beam bottom steel bars 19 One or two, one or more steel bars 20 at the top of the rib beam in the long-span direction; pouring in-situ concrete 18; after curing until the strength of the in-situ concrete 18 reaches 15MPa-40MPa, the installation of the prefabricated concrete two-way dense ribbed floor and construction is complete;

The prefabricated concrete strip-shaped hollow slab 29 is a concrete strip-shaped hollow slab or a prestressed concrete strip-shaped hollow slab provided with transverse rib hollow holes 6;

The third type, as shown in Figure 38 to Figure 47,

Step 1. Design of prefabricated concrete two-way ribbed floor

According to the size of the prefabricated concrete two-way densely ribbed floor, the prefabricated concrete channel block 30 is designed in two directions; according to the design of the cast-in-place concrete two-way densely ribbed floor; take the side ribs 2, flanges 5 and wedge-shaped grooves 17 in the short-span direction The short-span direction rib beam bottom reinforcement 21, the short-span direction rib beam top reinforcement 22, the cast-in-place concrete rib beam stirrup 23, and the concrete poured on site 18 are short-span direction rib beams 15; the long-span direction side ribs are taken 2. The bottom reinforcement 19 of the long-span direction rib beam inserted in the flange 5 and the wedge-shaped groove 17, the top reinforcement bar 20 of the long-span direction rib beam, the cast-in-place concrete rib beam stirrup 23, and the cast-in-place concrete 18 are long-span direction ribs Beam 16;

Step 2, the making of prefabricated concrete channel block 30

According to the design requirements of the precast concrete trough block 30, arrange the bottom formwork and the side formwork, bind the face plate steel bars 9 and the distribution steel bars 11 of the side ribs and end ribs, pour the precast concrete 8, and after curing, the strength of the precast concrete 8 reaches 15MPa～30MPa , demoulding and stacking the prefabricated prefabricated concrete trough block 30;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the design requirements of the prefabricated concrete two-way densely ribbed floor, formwork and supports at 25 places of the support of the floor are arranged, and the intersection points of every four prefabricated concrete channel blocks at 30 corners in the middle of the assembled concrete two-way densely ribbed floor are arranged Four or more prefabricated concrete trough blocks 30 are arranged for the support at the place; in the wedge-shaped groove 17 at the joint of the precast concrete trough block 30, the joint is sealed to prevent grout leakage, and the short-span direction rib beam is bound One or more reinforcement bars at the bottom 21, two or more reinforcement bars at the top of the rib beam in the short-span direction, two or more reinforcement bars at the top of the rib beam in the short-span direction, more than 23 stirrup bars for the cast-in-place concrete rib beam in the short-span direction, and one or more reinforcement bars at the bottom of the rib beam in the long-span direction , two or more steel bars 20 at the top of the rib beam in the long-span direction, more than two 23 stirrup bars for the cast-in-place concrete rib beam in the long-span direction, 24 waist bars for the cast-in-place concrete rib beam, and pouring on-site concrete 18; After the strength of the concrete 18 poured on site reaches 15MPa-40MPa, the installation and construction of the prefabricated concrete two-way ribbed floor will be completed;

The fourth type, as shown in Figure 48 to Figure 63,

Step 1. Design of prefabricated concrete two-way ribbed floor

According to the size of the prefabricated concrete two-way densely ribbed floor, the prefabricated concrete hollow block 32 is designed in two directions; according to the design of the cast-in-place concrete two-way densely ribbed floor; the side ribs 2, flanges 5 and wedge-shaped grooves 17 in the short-span direction are placed in the middle The short-span direction rib beam bottom reinforcement 21, the short-span direction rib beam top reinforcement 22, the cast-in-place concrete rib beam stirrup 23, and the concrete poured on site 18 are the short-span direction rib beam 15; the long-span direction side rib 2 , the bottom reinforcement 19 of the long-span direction rib beam inserted in the flange 5 and the wedge-shaped groove 17, the top reinforcement bar 20 of the long-span direction rib beam, the cast-in-place concrete rib beam stirrup 23, and the concrete 18 cast on site is the long-span direction rib beam 16;

Step 2, the making of prefabricated concrete hollow block 32

According to the design requirements of the bottom trough block 31 of the precast concrete hollow block, the bottom formwork and the side formwork are arranged, the distributed steel bars 11 and the bottom plate steel bars 28 of the side ribs and end ribs are bound, and the precast concrete 8 is poured. After curing, the strength of the precast concrete 8 reaches After 15MPa～30MPa, remove the side form, use the crane to hoist the bottom groove block 31 of the prefabricated concrete hollow block to remove the bottom form, at the same time, arrange the panel 7 of the precast concrete hollow block 32 at another station bottom formwork and side formwork, binding panel reinforcement 9, pouring the precast concrete 8 of the panel 7, using a crane to lift the bottom groove block 31 of the prefabricated concrete hollow block to this station, and the bottom groove of the prefabricated concrete hollow block The shaped block 31 and the face plate 7 are superimposed together to become the turned precast concrete hollow block 32. After curing until the strength of the precast concrete 8 of the face plate 7 reaches 15MPa-30MPa, the side formwork is removed, and the precast concrete hollow block 32 is turned over by a turning machine. Demoulding, flipping and stacking;

Step 3. Installation and construction of prefabricated concrete two-way ribbed floor

According to the design requirements of the prefabricated concrete two-way densely ribbed floor, formwork and support of 25 at the support of the floor are arranged, and the intersection points of 32 corners of every four prefabricated concrete hollow blocks in the middle of the assembled concrete two-way densely ribbed floor are arranged Four or more prefabricated concrete hollow blocks 32 are arranged for support; in the wedge-shaped grooves at the joints of the precast concrete hollow blocks 32, the joints are sealed to prevent grout leakage, and a steel bar 21 at the bottom of the rib beam in the short-span direction is bound Or more than one, two or more reinforcements 22 at the top of the rib beam in the short-span direction, two or more stirrups in the cast-in-place concrete rib beam in the short-span direction, two or more reinforcement bars at the bottom of the rib beam in the long-span direction, and one or more reinforcement bars at the bottom of the rib beam in the long-span direction Two or more steel bars 20 at the top of the rib beam, more than two 23 cast-in-place concrete rib beam stirrups in the long-span direction, 24 cast-in-place concrete rib beam waist bars, pouring site-cast concrete 18; 18 After the strength reaches 15MPa ~ 40MPa, the installation and construction of the prefabricated concrete two-way ribbed floor will be completed.

Claims (4)

1. assembly concrete two-way ribbed slab floor, it is characterized in that：Including precast concrete bar shaped frid (1), short across direction rib Beam (15), long span direction girt strip (16), wedge-shaped slot (17), the concrete (18) of cast in situs, long span direction girt strip bottom reinforcement bars (19), long span direction girt strip top rebars (20), short across direction girt strip bottom reinforcement bars (21), short across direction girt strip top rebars (22), bearing (25), the precast concrete of cast-in-place concrete rib beam hoop reinforcement (23), cast-in-place concrete girt strip waist muscle (24), superstructure It is the bottom frid (26) of bar shaped cored slab, bottom plate (27), baseplate reinforcing bar (28), precast concrete bar shaped cored slab (29), prefabricated Concrete flute profile block (30), the bottom flute profile block (31) of precast concrete hollow block, precast concrete hollow block (32)；

The precast concrete bar shaped frid (1) includes side rib (2), end rib (3), cross rib (4), the edge of a wing (5), cross rib hollow hole (6), the distribution of panel (7), precast concrete (8), slab reinforcement (9), the cableway (10) of cross rib stirrup, side rib and end rib Reinforcing bar (11), cross rib stirrup (12), side rib bottom reinforcement bars (13), side rib top rebars (14)；

The side rib (2) is precast concrete bar shaped frid (1) length direction both sides, precast concrete bar shaped cored slab (29) length Spend direction both sides, the vertical rib in precast concrete flute profile block (30) periphery and precast concrete hollow block (32) periphery；

The end rib (3) is precast concrete bar shaped frid (1) and precast concrete bar shaped cored slab (29) length direction two ends Vertical rib；

The cross rib (4) is rib vertical in the middle of precast concrete bar shaped frid (1) and precast concrete bar shaped cored slab (29), The vertical direction of precast concrete bar shaped frid (1) and precast concrete bar shaped cored slab (29) length direction is arranged on, is set Quantity is two or more；

The edge of a wing (5) is arranged on side rib (2) bottom, and is stretched laterally by side rib (2) bottom；

The cross rib hollow hole (6) is arranged between two cross ribs, insertion precast concrete bar shaped frid (1) and precast concrete The transverse direction of bar shaped cored slab (29)；

The panel (7) is precast concrete bar shaped frid (1), precast concrete bar shaped cored slab (29), concrete soil box Concrete slab at the top of shape block (30) and precast concrete hollow block (32)；

The precast concrete (8) is filled in precast concrete bar shaped frid (1), precast concrete bar shaped cored slab (29), pre- Concrete flute profile block (30) processed and the inside of precast concrete hollow block (32)；

The slab reinforcement (9) be two or more, inside of the bidirectional arrangements in panel (7)；

The cableway (10) of the cross rib stirrup be four or more, along cross rib (4) plane in it is horizontally arranged Inside in cross rib (4)；

Side rib and end rib the genesis analysis reinforcing bar (11) is one or more, along in side rib (2) and end rib (3) plane The horizontally arranged inside in side rib (2) and end rib (3)；

The cross rib stirrup (12) is two or more, and the inside of cross rib (4) is arranged on around cross rib hollow hole (6)；

The side rib bottom reinforcement bars (13) is one or more, along precast concrete bar shaped frid (1) and concrete The bottom of native bar shaped cored slab (29) side rib (2) length direction is arranged on the inside of side rib (2)；

The side rib top rebars (14) are one, hollow along precast concrete bar shaped frid (1) and precast concrete bar shaped The inside of side rib (2) is arranged at the top of plate (29) side rib (2) length direction；

Short across the direction girt strip (15) is the short girt strip arranged across direction of assembly concrete two-way ribbed slab floor；

Long span direction girt strip (16) is the girt strip that assembly concrete two-way ribbed slab floor long span direction is arranged；

The wedge-shaped slot (17) surrounds wedge shape by the outside of two neighboring side rib (2) and the top surface of the two neighboring edge of a wing (5) Groove；

The concrete (18) of the cast in situs is to be cast in wedge-shaped slot (17), cross rib hollow hole (6) and superstructure in engineering site Bearing (25) place concrete；

The long span direction girt strip bottom reinforcement bars (19) is to be arranged on assembly concrete two-way ribbed slab floor long span direction girt strip (16) reinforcing bar of bottom；

The long span direction girt strip top rebars (20) are to be arranged on assembly concrete two-way ribbed slab floor long span direction girt strip (16) reinforcing bar at the top of；

Short across the direction girt strip bottom reinforcement bars (21) is to be arranged on short across the direction girt strip of assembly concrete two-way ribbed slab floor (15) reinforcing bar of bottom；

Short across the direction girt strip top rebars (22) are to be arranged on short across the direction girt strip of assembly concrete two-way ribbed slab floor (15) reinforcing bar at the top of；

The cast-in-place concrete rib beam hoop reinforcement (23) is the stirrup for the girt strip arranged along wedge-shaped slot (17)；

The cast-in-place concrete girt strip waist muscle (24) is the waist muscle for the girt strip arranged along wedge-shaped slot (17)；

The bearing (25) of the superstructure is the bearing on assembly concrete two-way ribbed slab floor periphery；

The bottom frid (26) of the precast concrete bar shaped cored slab includes side rib (2), end rib (3), cross rib (4), the edge of a wing (5), distribution bar (11), the cross rib stirrup of precast concrete (8), the cableway (10) of cross rib stirrup, side rib and end rib (12), side rib bottom reinforcement bars (13), bottom plate (27), baseplate reinforcing bar (28)；

The bottom plate (27) refers to the coagulation of precast concrete bar shaped cored slab (29) and precast concrete hollow block (32) bottom Native plate；

The baseplate reinforcing bar (28) be two or more, inside of the bidirectional arrangements in bottom plate (27)；

The precast concrete bar shaped cored slab (29) includes bottom frid (26), the panel of precast concrete bar shaped cored slab (7), slab reinforcement (9) and side rib top rebars (14)；

The precast concrete flute profile block (30) includes side rib (2), the edge of a wing (5), panel (7), precast concrete (8), panel steel The distribution bar (11) of muscle (9), side rib and end rib；

The bottom flute profile block (31) of the precast concrete hollow block includes side rib (2), the edge of a wing (5), precast concrete (8), side Distribution bar (11), bottom plate (27), the baseplate reinforcing bar (28) of rib and end rib；

The precast concrete hollow block (32) includes bottom flute profile block (31), panel (7) and the face of precast concrete hollow block Slab muscle (9).

2. the method for construction of assembly concrete two-way ribbed slab floor, it is characterized in that：There are four types, each type includes three Individual step,

First type, using the assembly concrete two-way ribbed slab floor of precast concrete bar shaped frid (1)

Step 1: the design of assembly concrete two-way ribbed slab floor

Along short across the direction arrangement precast concrete bar shaped frid (1) of assembly concrete two-way ribbed slab floor, by construction rank Section design precast concrete bar shaped frid (1), assembly concrete two-way ribbed slab floor is designed by service stage；

The design of service stage：

Take short across the direction girt strip bottom reinforcement bars (21) inserted in side rib (2), the edge of a wing (5) and wedge-shaped slot (17), short across direction rib Beam top rebars (22), cast-in-place concrete rib beam hoop reinforcement (23), the concrete (18) of cast in situs are short across direction girt strip (15)；

Take the cross rib (4), cross rib stirrup (12), long span direction girt strip bottom of the continuous insertion arrangement of precast concrete bar shaped frid (1) The concrete (18) of portion's reinforcing bar (19), long span direction girt strip top rebars (20) and the cast in situs in cross rib hollow hole (6) is Long span direction girt strip (16)；

Step 2: the making of precast concrete bar shaped frid (1)

According to the pre-set dimension of precast concrete bar shaped frid (1), arrangement bed die and side form, colligation slab reinforcement (9), cross rib hoop Cableway (10), the distribution bar (11) of side rib and end rib, cross rib stirrup (12), side rib bottom reinforcement bars (13) and the side rib of muscle Top rebars (14), insert two or more cross rib hollow holes (6) into punch die, precast concrete (8) is poured, pre- Before concrete (8) final set processed remove cross rib hollow hole (6) into punch die and side form, through conserving to precast concrete (8) intensity Reach after 15MPa~30MPa, by prefabricated precast concrete bar shaped frid (1) demoulding stacking；

Step 3: the installation and construction of assembly concrete two-way ribbed slab floor

According to the pre-set dimension of assembly concrete two-way ribbed slab floor, template and the support at bearing (25) place of superstructure are arranged, Hang arrangement precast concrete bar shaped frid (1) two or more；Closure is in precast concrete bar shaped frid (1) edge joint position Wedge-shaped slot (17) in piece, short across the direction girt strip bottom reinforcement bars (21) of colligation one or two, short across the direction girt strip of colligation Top rebars (22) two or more, short across direction cast-in-place concrete rib beam hoop reinforcement (23) two or more of colligation, colligation is existing Pouring concrete girt strip waist muscle (24)；Along the cross rib hollow hole (6) of the continuous insertion of precast concrete bar shaped frid (1), intert simultaneously Colligation long span direction girt strip bottom reinforcement bars (19) one or two, while interspersed and colligation long span direction girt strip top rebars (20) One or more；Pour the concrete (18) of cast in situs；Reached through conserving to the concrete of cast in situs (18) intensity After 15MPa~40MPa, the installation of assembly concrete two-way ribbed slab floor is completed with construction；

Second of type, using the assembly concrete two-way ribbed slab floor of precast concrete bar shaped cored slab (29)

Step 1: the design of assembly concrete two-way ribbed slab floor

Along short across the direction arrangement precast concrete bar shaped cored slab (29) of assembly concrete two-way ribbed slab floor, by construction Stage design precast concrete bar shaped cored slab (29), assembly concrete two-way ribbed slab floor is designed by service stage；

The design of service stage：

Take short across the direction girt strip bottom reinforcement bars (21) inserted in side rib (2), the edge of a wing (5) and wedge-shaped slot (17), short across direction rib Beam top rebars (22), cast-in-place concrete rib beam hoop reinforcement (23), the concrete (18) of cast in situs are short across direction girt strip (15)；

Take cross rib (4), cross rib stirrup (12), the long span direction girt strip of the continuous insertion arrangement of precast concrete bar shaped cored slab (29) The concrete (18) of bottom reinforcement bars (19), long span direction girt strip top rebars (20) and the cast in situs in cross rib hollow hole (6) For long span direction girt strip (16)；

Step 2: the making of precast concrete bar shaped cored slab (29)

According to the pre-set dimension of the bottom frid (26) of precast concrete bar shaped cored slab, arrangement bed die and side form, colligation cross rib Cableway (10), the distribution bar (11) of side rib and end rib, cross rib stirrup (12), side rib bottom reinforcement bars (13) and the bottom of stirrup Slab muscle (28), insert two or more cross rib hollow holes (6) into punch die, precast concrete (8) is poured, prefabricated Before concrete (8) final set remove cross rib hollow hole (6) into punch die, reach 15MPa through conserving to precast concrete (8) intensity After~30MPa, the bottom frid (26) of prefabricated precast concrete bar shaped cored slab is sling using loop wheel machine, remove side form and Bed die, colligation side rib top rebars (14)；Meanwhile, arrange the panel of precast concrete bar shaped cored slab (29) in another station (7) bed die and side form, colligation slab reinforcement (9), insert two or more cross rib hollow holes (6) into punch die, pour The precast concrete (8) of panel (7) is built, using loop wheel machine by the bottom frid (26) of prefabricated precast concrete bar shaped cored slab This station is hung to, the bottom frid (26) and panel (7) of precast concrete bar shaped cored slab are superimposed together, as turning over what is put Precast concrete bar shaped cored slab (29), removed before precast concrete (8) final set cross rib hollow hole (6) into punch die, warp Precast concrete (8) intensity conserved to panel (7) is reached after 15MPa~30MPa, removes Side shuttering, will using tipper Precast concrete bar shaped cored slab (29) is stripped, overturns and pile up；

Step 3: the installation and construction of assembly concrete two-way ribbed slab floor

According to the pre-set dimension of assembly concrete two-way ribbed slab floor, template and the support at bearing (25) place of superstructure are arranged, Hang arrangement precast concrete bar shaped cored slab (29) two or more；Closure is in precast concrete bar shaped cored slab (29) Piece in the wedge-shaped slot (17) of edge joint position, short across the direction girt strip bottom reinforcement bars (21) of colligation one or two, colligation is short across side To girt strip top rebars (22) two or more, short across direction cast-in-place concrete rib beam hoop reinforcement (23) two or more of colligation, Colligation cast-in-place concrete girt strip waist muscle (24)；Along the cross rib hollow hole of the continuous insertion of precast concrete bar shaped cored slab (29) (6), intert and colligation long span direction girt strip bottom reinforcement bars (19) one or two, while interspersed and colligation long span direction girt strip top Portion's reinforcing bar (20) one or more；Pour the concrete (18) of cast in situs；Through conserving to the concrete of cast in situs (18) intensity is reached after 15MPa~40MPa, and the installation of assembly concrete two-way ribbed slab floor is completed with construction；

The third type, using the assembly concrete two-way ribbed slab floor of precast concrete flute profile block (30)

Step 1: the design of assembly concrete two-way ribbed slab floor

According to the size bidirectional arrangements of assembly concrete two-way ribbed slab floor and design precast concrete flute profile block (30)；By existing Pouring concrete two-way ribbed slab floor is designed；

Take inserted in short side rib (2) across direction, the edge of a wing (5) and wedge-shaped slot (17) short across direction girt strip bottom reinforcement bars (21), Short across direction girt strip top rebars (22), cast-in-place concrete rib beam hoop reinforcement (23), the concrete (18) of cast in situs are short across side To girt strip (15)；

The long span direction girt strip bottom reinforcement bars (19) inserted in the side rib (2), the edge of a wing (5) and the wedge-shaped slot (17) that take long span direction, Long span direction girt strip top rebars (20), cast-in-place concrete rib beam hoop reinforcement (23), the concrete (18) of cast in situs are long span side To girt strip (16)；

Step 2: the making of precast concrete flute profile block (30)

According to the design requirement of precast concrete flute profile block (30), arrangement bed die and side form, colligation slab reinforcement (9) and side rib and The distribution bar (11) of end rib, pours precast concrete (8), through conserve to precast concrete (8) intensity reach 15MPa~ After 30MPa, by prefabricated precast concrete flute profile block (30) demoulding stacking；

Step 3: the installation and construction of assembly concrete two-way ribbed slab floor

According to the design requirement of assembly concrete two-way ribbed slab floor, template and the support at bearing (25) place of superstructure are arranged, The branch arranged at every four precast concrete flute profiles block (30) angle point joint in the middle of assembly concrete two-way ribbed slab floor Support, hang arrangement precast concrete flute profile block (30) four or more；Closure is in precast concrete flute profile block (30) piece Piece in the wedge-shaped slot (17) at place, short across the direction girt strip bottom reinforcement bars (21) of colligation one or more, colligation is short across side To girt strip top rebars (22) two or more, short across direction cast-in-place concrete rib beam hoop reinforcement (23) two or more of colligation, Colligation long span direction girt strip bottom reinforcement bars (19) one or more, colligation long span direction girt strip top rebars (20) two or Two or more, colligation long span direction cast-in-place concrete rib beam hoop reinforcement (23) two or more, colligation cast-in-place concrete girt strip waist muscle (24) concrete (18) of cast in situs, is poured；Through conserve to the concrete of cast in situs (18) intensity reach 15MPa~ After 40MPa, the installation of assembly concrete two-way ribbed slab floor is completed with construction；

4th type, using the assembly concrete two-way ribbed slab floor of precast concrete hollow block (32)

Step 1: the design of assembly concrete two-way ribbed slab floor

According to the size bidirectional arrangements of assembly concrete two-way ribbed slab floor and design precast concrete hollow block (32)；By existing Pouring concrete two-way ribbed slab floor is designed；

Take inserted in short side rib (2) across direction, the edge of a wing (5) and wedge-shaped slot (17) short across direction girt strip bottom reinforcement bars (21), Short across direction girt strip top rebars (22), cast-in-place concrete rib beam hoop reinforcement (23), the concrete (18) of cast in situs are short across side To girt strip (15)；

The long span direction girt strip bottom reinforcement bars (19) inserted in the side rib (2), the edge of a wing (5) and the wedge-shaped slot (17) that take long span direction, Long span direction girt strip top rebars (20), cast-in-place concrete rib beam hoop reinforcement (23), the concrete (18) of cast in situs are long span side To girt strip (16)；

Step 2: the making of precast concrete hollow block (32)

According to the design requirement of the bottom flute profile block (31) of precast concrete hollow block, arrangement bed die and side form, colligation side rib and The distribution bar (11) and baseplate reinforcing bar (28) of end rib, pour precast concrete (8), through conserving to precast concrete (8) intensity Reach after 15MPa~30MPa, remove side form, using loop wheel machine by the bottom flute profile block of prefabricated precast concrete hollow block (31) dismounting bed die is sling；Meanwhile, bed die and the side of the panel (7) of precast concrete hollow block (32) are arranged in another station Mould, colligation slab reinforcement (9) pours the precast concrete (8) of panel (7), using loop wheel machine that prefabricated precast concrete is empty The bottom flute profile block (31) of heart block is hung to this station, and the bottom flute profile block (31) and panel (7) of precast concrete hollow block is folded It is combined, as the precast concrete hollow block (32) put is turned over, is reached through conserving to the precast concrete of panel (7) (8) intensity To after 15MPa~30MPa, Side shuttering is removed, precast concrete hollow block (32) is stripped using tipper, overturn and code Put；

Step 3: the installation and construction of assembly concrete two-way ribbed slab floor

According to the design requirement of assembly concrete two-way ribbed slab floor, the template of (25) and support at the bearing of superstructure are arranged, The branch arranged at every four precast concrete hollow blocks (32) angle point joint in the middle of assembly concrete two-way ribbed slab floor Support, hang arrangement precast concrete hollow block (32) four or more；Closure is in precast concrete hollow block (32) piece Piece in the wedge-shaped slot at place, short across the direction girt strip bottom reinforcement bars (21) of colligation one or more, short across the direction rib of colligation Beam top rebars (22) two or more, short across direction cast-in-place concrete rib beam hoop reinforcement (23) two or more of colligation, colligation Long span direction girt strip bottom reinforcement bars (19) one or more, colligation long span direction girt strip top rebars (20) two or two More than, colligation long span direction cast-in-place concrete rib beam hoop reinforcement (23) two or more, colligation cast-in-place concrete girt strip waist muscle (24) is poured Build the concrete (18) of cast in situs；After conserving and reaching 15MPa~40MPa to the concrete of cast in situs (18) intensity, dress Installation with formula concrete bidirectional close rib building roof is completed with construction.

3. the method for construction of assembly concrete two-way ribbed slab floor according to claim 2, it is characterized in that：It is described prefabricated Concrete bar shaped frid (1) is the concrete bar shaped frid or prestressed concrete bar shaped frid for being provided with cross rib hollow hole (6).

4. the method for construction of assembly concrete two-way ribbed slab floor according to claim 2, it is characterized in that：It is described prefabricated Concrete bar shaped cored slab (29) is concrete bar shaped cored slab or the prestressed concrete bar shaped for being provided with cross rib hollow hole (6) Cored slab.