CN108978697B

CN108978697B - Terrace template system and construction method

Info

Publication number: CN108978697B
Application number: CN201810871238.XA
Authority: CN
Inventors: 唐益辉; 柳建国
Original assignee: MCC5 Group Shanghai Corp Ltd
Current assignee: MCC5 Group Shanghai Corp Ltd
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2020-08-21
Anticipated expiration: 2038-08-02
Also published as: CN108978697A

Abstract

The invention relates to a terrace template system and a construction method, which comprises a pile cap fetal membrane arranged on a terrace tubular pile, wherein the pile cap fetal membrane is fixed on a pile core steel bar on the terrace tubular pile through a first reserved steel bar, the bottom of the pile cap fetal membrane is round, the top of the pile cap fetal membrane is square, the pile cap fetal membrane is positioned at the upper end of the terrace tubular pile, and the first reserved steel bar extends upwards from the bottom end of the pile cap fetal membrane to the top surface of the terrace tubular pile. The invention is beneficial to reducing earth backfill, is convenient for terrace construction and ensures the quality safety of the tubular pile.

Description

Terrace template system and construction method

Technical Field

The invention relates to the technical field of ground construction, in particular to a terrace template system and a construction method.

Background

The upper structure of the building has two structures, namely a steel structure and a concrete structure, and the pure steel structure does not need to set up a support frame on the foundation, and only needs to meet the hoisting condition of a crane; the concrete structure needs to set up a support frame on the foundation. The construction of the floor is usually performed after the construction of the upper structure is completed due to the protection of the floor surface layer. Under the condition of soft foundation, because the soil under the ground is very poor and is difficult to treat or the treatment cost is too high, the structural terrace is adopted. In terms of stress, the load borne by the structural terrace is transmitted to the beam or the plate, then to the column and finally to the pipe pile foundation; the invention relates to a structure terrace, in particular to a tubular pile foundation beamless plate structure terrace and a tubular pile foundation beamless plate structure terrace.

Since the terrace construction is the follow-up operation of the upper structure construction, the terrace foundation pipe pile needs to be protected in the upper structure construction process. The soft foundation soil has a thick sludge layer and is very easy to disturb, and the quality problems of deviation of the tubular pile, welding joint desoldering and the like are easily caused when an excavator or a crane runs around the tubular pile. When superstructure construction, the conventional way is not to excavate the terrace basis, and tubular pile top earthing 400 supplyes 600mm, lays the graded rubble according to formal terrace way again, pours the bed course to the construction of superstructure is convenient. After the upper structure construction is completed, the cushion layer is broken again, broken stones are cleaned, redundant earthwork is transported outside, brick beds are built, pile cores are dug, and terrace construction is carried out. Therefore, the method has the defects of more processes, material waste, large investment, long construction period and the like.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the problems of multiple working procedures and long construction period in the prior art, so that the terrace template system and the construction method which can effectively shorten the construction period and reduce the material waste are provided.

In order to solve the technical problem, the terrace template system comprises a pile cap mould film arranged on a terrace tubular pile, wherein the pile cap mould film is fixed on a pile core steel bar on the terrace tubular pile through a first reserved steel bar, the bottom of the pile cap mould film is round, the top of the pile cap mould film is square, the pile cap mould film is positioned at the upper end of the terrace tubular pile, and the first reserved steel bar extends upwards to the top surface of the terrace tubular pile from the bottom end of the pile cap mould film.

In an embodiment of the invention, the number of the first reserved steel bars is multiple, and the first reserved steel bars are uniformly distributed on the top surface and the periphery of the floor pipe pile.

In one embodiment of the invention, the round hole at the bottom of the pile cap fetal membrane is larger than the diameter of the terrace pipe pile.

In an embodiment of the invention, a plurality of second reserved steel bars are arranged on the pile cap fetal membrane in an extending manner from the top end to the bottom end, and the bottoms of the second reserved steel bars extend towards the top of the floor tubular pile.

In an embodiment of the present invention, the bottom of the second reserved steel bar is uniformly distributed along the floor pipe pile.

In an embodiment of the invention, the inner wall of the pile cap fetal membrane is further provided with a third reserved steel bar which surrounds the pile cap fetal membrane along the circumferential direction.

The invention also provides a construction method of the terrace template, which is used for constructing any one of the terrace template systems and comprises the following steps: after the construction of the bearing platform foundation is completed, earth backfilling is carried out, the earth is compacted to the pile top elevation of the floor pipe pile in a layered mode, the pile core of the floor pipe pile is poured, the manufactured pile cap moulding bed is installed at the top end of the floor pipe pile, and the pile cap moulding bed is fixed on the pile core steel bar on the floor pipe pile through first reserved steel bars; and continuously backfilling, compacting to the bottom of the terrace cushion layer in a layering manner, pouring the cushion layer, and simultaneously plugging a gap between the pile cap mould and the terrace pipe pile by using concrete.

In an embodiment of the invention, before the pouring of the pile core of the floor pipe pile, the pile head position of the floor pipe pile is cleaned.

In one embodiment of the invention, when the cushion layer is poured, the cushion layer is flush with the top surface of the pile cap fetal membrane.

In one embodiment of the present invention, after the step S2, the superstructure is constructed.

Compared with the prior art, the technical scheme of the invention has the following advantages:

according to the terrace template system and the construction method, the pile cap fetal membrane is fixed on the pile core steel bar on the terrace tubular pile, so that the reduction of earth backfill is facilitated, the terrace construction is facilitated, the quality safety of the tubular pile is ensured, the bottom of the pile cap fetal membrane is round, the pile cap fetal membrane is favorably fixed on the terrace tubular pile, the top of the pile cap fetal membrane is square, the arrangement of the steel bar in the pile cap fetal membrane and the terrace steel bar is facilitated, and the arrangement of the steel bar is regular and attractive; in addition, pile cap fetal membrane has the function of retaining, consequently can effectively prevent rainwater infiltration concrete below, increases stability.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a perspective view of the floor formwork system of the present invention;

FIG. 2 is a front view of the floor formwork system of the present invention;

fig. 3 is a top view of the floor formwork system of the present invention.

The specification reference numbers indicate: 10-terrace tubular pile, 20-pile cap moulding bed, 21-first reserved steel bar, 22-second reserved steel bar and 23-third reserved steel bar.

Detailed Description

Example one

As shown in fig. 1 and 2 and fig. 3, this embodiment provides a terrace template system, including installing pile cap fetal membrane 20 on terrace tubular pile 10, pile cap fetal membrane 20 is located the upper end of terrace tubular pile 10, just pile cap fetal membrane 20 is fixed through first reserved reinforcing bar 21 on the pile core reinforcing bar on the terrace tubular pile 20, wherein the bottom of pile cap fetal membrane 20 is circular, the top is squarely, first reserved reinforcing bar 21 by the bottom of pile cap fetal membrane 20 upwards extends to the top surface of terrace tubular pile 10.

The floor template system comprises a pile cap fetal membrane 20 installed on a floor tubular pile 10, wherein the pile cap fetal membrane 20 is located at the upper end of the floor tubular pile 10, and the pile cap fetal membrane 20 is fixed on pile core steel bars on the floor tubular pile 20 through first reserved steel bars 21, so that earthwork backfilling is reduced, floor construction is facilitated, and quality safety of tubular piles is ensured; in addition, pile cap fetal membrane 20 has the function of retaining, consequently can effectively prevent rainwater infiltration concrete below, increase stability, first reservation reinforcing bar 21 by the bottom of pile cap fetal membrane 20 upwards extends to the top surface of terrace tubular pile 10, thereby can make pile cap fetal membrane 20 is fixed the upper end of terrace tubular pile 10.

First reservation reinforcing bar 21's quantity is a plurality of, and evenly distributed is in the top surface of terrace tubular pile 10 reaches on every side, thereby is favorable to with pile cap fetal membrane 20 stabilizes on the stake core reinforcing bar on the terrace tubular pile 20. In this embodiment, the quantity of first reservation reinforcing bar 21 is four, after the location with tubular pile irritates core reinforcing bar welded fastening. In order to prevent the pile position deviation, cause the pile head to incline, the round hole of pile cap fetal membrane 20 bottom compares terrace tubular pile 10's diameter is big, through the adjustment the position of the 20 base circles of pile cap fetal membrane to guarantee that fetal membrane installation dimension is correct.

Pile cap fetal membrane 20 is last to be equipped with a plurality of seconds by the top to the bottom extension and reserve reinforcing bar 22, just reinforcing bar 22 is reserved to the second bottom to the top of floor tubular pile 10 is extended, reinforcing bar 22 is reserved to the second has the effect of fixing, location, is pouring simultaneously pile cap fetal membrane 20 with play supporting role during the concrete of floor tubular pile 10. Specifically, pour pile cap fetal membrane 20 with during the hole of terrace tubular pile 10, the second is reserved reinforcing bar 22 and can be played the effect of template, and the backfill extremely below the second is reserved reinforcing bar 22, the concrete is directly pour between the second is reserved reinforcing bar 22. The bottom of reinforcing bar 22 is reserved to the second is followed terrace tubular pile 10 evenly distributed to be favorable to with pile cap fetal membrane 20 is fixed on the stake core reinforcing bar on the terrace tubular pile 20. Still be equipped with on the inner wall of pile cap fetal membrane 20 and encircle along the circumferencial direction the third reserved reinforcing bar 23 of pile cap fetal membrane 20, the third reserved reinforcing bar 23 is favorable to strengthening the intensity of pile cap fetal membrane 20 guarantees no fracture, damage of pile cap fetal membrane 20 in the work progress.

Example two

The embodiment provides a method for constructing a terrace template, which is used for constructing the terrace template system in the first embodiment and comprises the following steps: step S1: after the construction of the bearing platform foundation is completed, earth backfill is carried out, the earth is compacted to the pile top elevation of the floor pipe pile 10 in a layering manner, the pile core of the floor pipe pile 10 is poured, the manufactured pile cap moulding bed 20 is installed at the top end of the floor pipe pile 10, and the pile cap moulding bed 20 is fixed on the pile core steel bar on the floor pipe pile 10 through a first reserved steel bar 21; step S2: and continuously backfilling, compacting to the bottom of the terrace cushion layer in a layering manner, pouring the cushion layer, and simultaneously plugging a gap between the pile cap mould and the terrace pipe pile by using concrete.

The construction method of the floor template of the embodiment, in the step S1, after the construction of the bearing platform foundation is completed, earthwork backfilling is carried out, layered compaction is carried out to the pile top elevation of the floor tubular pile 10, the pile core of the floor tubular pile 10 is poured, the manufactured pile cap fetal membrane 20 is installed at the top end of the floor tubular pile 10, and the pile cap fetal membrane 20 is fixed on the pile core steel bar on the floor tubular pile 10 through the first reserved steel bar 21, so that the earthwork backfilling reduction is facilitated, the floor construction is facilitated, and the protection of the tubular pile foundation is facilitated; in step S2, continue backfill, the layering compaction is to terrace bed course bottom, pours the bed course, simultaneously with the concrete shutoff pile cap fetal membrane with gap between the terrace tubular pile owing to adopt pile cap fetal membrane 20 when superstructure construction, reserves pile head position in advance, and no pile area can normally be under construction, and pile head position passes through pile cap fetal membrane 20' S is fixed, and the sign when superstructure construction, notices the protection, and superstructure construction accomplishes the back, links up the terrace construction smoothly, and does not need the reprocess ground, ensures that the quality safety of tubular pile and follow-up construction link up smoothly.

Fill before terrace tubular pile 10's the stake core, the clearance terrace tubular pile 10's pile head position to be favorable to filling terrace tubular pile 10's stake core. When the cushion layer is poured, the cushion layer is flush with the top surface of the pile cap fetal membrane 20, so that rainwater can be guaranteed to flow into the pile cap fetal membrane 20. And after the step S2, constructing the upper structure, wherein the upper structure comprises the installation of the floor slab formwork. During superstructure construction, at the non-pile area road bed case (steel construction) or channel-section steel (support frame construction), after superstructure construction is accomplished, terrace construction can be carried out, need not to increase any process.

In this embodiment, the specific size of the bottom dome of the pile cap mold 20 is determined according to the pile diameter of the floor pipe pile 10 and the thickness of the floor plate. According to the determined size of the pile cap mould 20, a steel plate mould is manufactured by a factory, and the pile cap mould 20 is prefabricated on site or in batches by the steel plate mould.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A terrace template system, characterized by: including installing the pile cap fetal membrane on the terrace tubular pile, just the pile cap fetal membrane is fixed through first reservation reinforcing bar on the pile core reinforcing bar on the terrace tubular pile, wherein the bottom of pile cap fetal membrane is circular, the top is squarely, the pile cap fetal membrane is located the upper end of terrace tubular pile, first reservation reinforcing bar by the bottom of pile cap fetal membrane upwards extends to the top surface of terrace tubular pile.

2. The floor formwork system of claim 1, wherein: the quantity of first reservation reinforcing bar is a plurality of, and evenly distributed is in the top surface of terrace tubular pile reaches on every side.

3. The floor formwork system of claim 1, wherein: the round hole at the bottom of the pile cap fetal membrane is larger than the diameter of the terrace tube pile.

4. The floor formwork system of claim 1, wherein: the reinforcing bar is reserved to the bottom by the top to the bottom extension by the top on the pile cap fetal membrane is equipped with a plurality of seconds, just the bottom of reinforcing bar is reserved to the second to the top of terrace tubular pile extends.

5. The floor formwork system of claim 4, wherein: the bottom of reinforcing bar is reserved to the second is followed terrace tubular pile evenly distributed.

6. The floor formwork system of claim 1, wherein: and a third reserved steel bar which surrounds the pile cap fetal membrane along the circumferential direction is further arranged on the inner wall of the pile cap fetal membrane.

7. A method for constructing a terrace template, which is used for constructing the terrace template system of any one of claims 1 to 6, and is characterized by comprising the following steps:

step S1: after the construction of the bearing platform foundation is completed, earth backfilling is carried out, the earth is compacted to the pile top elevation of the floor pipe pile in a layered mode, the pile core of the floor pipe pile is poured, the manufactured pile cap moulding bed is installed at the top end of the floor pipe pile, and the pile cap moulding bed is fixed on the pile core steel bar on the floor pipe pile through first reserved steel bars;

step S2: and continuously backfilling, compacting to the bottom of the terrace cushion layer in a layering manner, pouring the cushion layer, and simultaneously plugging a gap between the pile cap mould and the terrace pipe pile by using concrete.

8. The floor form construction method according to claim 7, characterized in that: and (3) cleaning the pile head position of the floor pipe pile before pouring the pile core of the floor pipe pile.

9. The floor form construction method according to claim 7, characterized in that: and when the cushion layer is poured, the cushion layer is parallel and level to the top surface of the pile cap fetal membrane.

10. The floor form construction method according to claim 7, characterized in that: after the step S2 is completed, the superstructure is constructed.