CN104018518B - The method of prefabricated diaphragm wall and construction outer wall of basement and floor - Google Patents

The method of prefabricated diaphragm wall and construction outer wall of basement and floor Download PDF

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Publication number
CN104018518B
CN104018518B CN201410238500.9A CN201410238500A CN104018518B CN 104018518 B CN104018518 B CN 104018518B CN 201410238500 A CN201410238500 A CN 201410238500A CN 104018518 B CN104018518 B CN 104018518B
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monomer
row
hole
floor
reinforcement
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CN201410238500.9A
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CN104018518A (en
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查支祥
彭卫
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浙江大学宁波理工学院
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Abstract

The invention discloses a kind of method of prefabricated diaphragm wall and construction outer wall of basement and floor, this diaphragm wall comprises wall monomer (1) and pile foundation (2), multiple wall monomer (1) longitudinally superposition forms wall row, whole wall monomer (1) that this row wall arranges by prestressed reinforcement (7) and pile foundation (2) tensioning and fill cement paste in prestress hole (3); The inner surface of each wall monomer (1) is provided with the multiple preformed hole of a row and pre-embedded steel slab, is provided with connecting reinforcement in each preformed hole; The key of the method is tensioning prestressed reinforcement (7), whole wall monomer (1) that wall is arranged and pile foundation (2) tensioning, and the horizontal steel bar of floor bar cage is stretched into preformed hole docks with connecting reinforcement.This diaphragm wall and construction method can accelerate speed of application, reduction of erection time, horizontal shearing resistance and longitudinal Compressive Bearing Capacity good and construction floor time without the need to knocking out diaphragm wall concrete.

Description

The method of prefabricated diaphragm wall and construction outer wall of basement and floor

Technical field

The present invention relates to the Underground Construction technology in field of civil engineering, is specifically a kind of prefabricated diaphragm wall and the method utilizing this prefabricated construction of diaphragm wall outer wall of basement and floor.

Background technology

Along with the progress of Base hole supporting technology and the development of building underground structure technology, there is a kind of diaphragm wall integrating foundation pit bracing piling wall and outer wall of basement two kinds of structures, this diaphragm wall not only possessed foundation pit bracing piling wall to the supporting of foundation ditch and water retaining function but also can directly as outer wall of basement to support building superstructure, construct after this body of wall, without the need to more separately construction foundation pit go along with sb. to guard him piling wall and outer wall of basement, therefore can significantly reduction of erection time, and integrate due to outer wall of basement and foundation pit bracing piling wall, this just expands the usable floor area of underground structure and reduces the area that building site takies, meet the situation of present urban land area growing tension.

The construction method of the diaphragm wall of prior art is: subdrilling stake holes, then digs the mounting groove coincide with walls shape, then in stake holes, puts into pile foundation steel bar cage and put into wall steel bar cage to mounting groove, then integrally water and smash body of wall and pile foundation concrete.There is a drawback in the construction method of prior art: because whole body of wall volume is large, and it is many to water the concrete amount of smashing, and hardening of concrete speed is too slow, and the duration is oversize.

In order to accelerate speed of application, reduction of erection time, someone proposes a kind of construction that diaphragm wall is first prefabricated imagination, i.e. first prefabricated diaphragm wall, then direct the prefabricated exterior wall completely that hardened is transported to job site, again by its direct handling in mounting groove, so just nature is without the need to waiting for the hardening of concrete of diaphragm wall, the significantly reduction of erection time.But the bulky of diaphragm wall, nature by the carrying of complete diaphragm wall and handling, so can only precast wall monomer, can not will be spliced into overall diaphragm wall in the handling to mounting groove of wall monomer.This imagination cannot realize owing to there is a technical barrier being difficult to overcome: be exactly longitudinal direction between wall monomer with wall monomer and short transverse is connected and longitudinal direction between diaphragm wall with pile foundation is connected and cannot realizes, like this, the shear strength of whole body of wall and longitudinal load-bearing power deficiency, soil body lateral pressure cannot be born, also cannot support the longitudinal pressure of building superstructure.And, also there is a defect in this imagination: because diaphragm wall is prefabricated, like this, when needs water and smash basement floor, the diaphragm wall concrete of floor with absolute altitude must be knocked out, expose reinforcing bar, again by floor bar and diaphragm wall steel reinforcement abutting joints, finally water and smash floorslab concrete, floorslab concrete of namely constructing must knock out diaphragm wall concrete, process is loaded down with trivial details, even easily damages diaphragm wall structure.

Summary of the invention

The technical problem that the present invention will solve is, provide one can accelerate speed of application, reduction of erection time, horizontal shearing resistance and longitudinal Compressive Bearing Capacity good and construction floor time without the need to knocking out the concrete prefabricated diaphragm wall of diaphragm wall.

A technical solution of the present invention is, a kind of prefabricated diaphragm wall is provided, it comprises multiple wall monomer and many piles base, each wall monomer longitudinally runs through multiple prestress hole and multiple non-prestressed hole, the left and right side of the outer protruding wall monomer of transverse reinforcement of each wall monomer, multiple wall monomer is superposition formation one row wall row longitudinally, run through and have a prestressed reinforcement with well in the prestress hole of every whole wall monomers of row wall row, the lower end of prestressed reinforcement and the lower end of sleeve pipe are all anchored in pile foundation concrete, whole wall monomer that this row wall arranges by prestressed reinforcement and pile foundation tensioning and fill cement paste in prestress hole, run through and have a nonprestressed reinforcement and also fill cement paste in non-prestressed hole in the non-prestressed hole of every whole wall monomers of row wall row, be provided with concrete joint portion between every two adjacent wall row, be provided with joint portion reinforcing cage in concrete joint portion, the transverse reinforcement stretching into concrete joint portion that joint portion reinforcing cage and the wall of the left and right sides arrange docks to be fixed, the inner surface of each wall monomer is provided with a level to groove, level is provided with the multiple preformed hole of a row and one piece of pre-embedded steel slab to groove bottom land, pre-embedded steel slab is positioned at the below of row's preformed hole, be provided with in each preformed hole and dock fixing connecting reinforcement with wall monomer reinforcing cage, level is spirally connected one piece for blocking the shrouding of pre-embedded steel slab and preformed hole in groove.

Another technical problem that the present invention will solve is, provide a kind of can accelerate speed of application, reduction of erection time, horizontal shearing resistance and longitudinal Compressive Bearing Capacity good and construction floor time without the need to knocking out the method for the concrete construction outer wall of basement of diaphragm wall and floor.

Another technical solution of the present invention is, provide a kind of method of construct outer wall of basement and floor, its step comprises:

A, dig mounting groove and bore multiple stake holes, stake holes is positioned at the bottom land of mounting groove;

B, in each stake holes, insert pile foundation steel bar cage and a prestressed reinforcement with well, and to stake holes slip casting;

C, multiple wall monomer is longitudinally superimposed as multiple wall arranges and put into mounting groove, each wall arranges and is formed by stacking from the bottom up by multiple wall monomer, and the prestressed reinforcement of anchoring in the pile foundation of each wall row below and sleeve pipe are arranged the prestress hole of whole wall monomer through this wall, nonprestressed reinforcement is inserted in the non-prestressed hole of the whole wall monomers arranged to each wall again, then slip casting in the prestress hole arranged to each wall and non-prestressed hole, after band concrete is stiff, tensioning prestressed reinforcement, like this, the wall monomer of multiple longitudinally superposition defines overall wall row;

D, in the gap between every two adjacent walls row, insert joint portion reinforcing cage, and the transverse reinforcement that the side of each wall monomer of wall row is protruded docks fixing with joint portion reinforcing cage, then slip casting in gap, make it to form the concrete joint portion between wall row, like this, multiple wall row form overall diaphragm wall;

E, water the floorslab concrete smashing basement top layer diaphragm wall top mark is high, and on the floor of basement top layer, leave the operation hole dug and be unearthed in advance;

F, under dig the soil body in diaphragm wall until under dig the absolute altitude of lower one deck basement floor, lay down the shrouding of the wall monomer of this absolute altitude, the preformed hole of wall monomer inner surface and pre-embedded steel slab are exposed, pre-embedded steel slab welds angle steel, re-lay the reinforcing cage of this floor plate and the horizontal steel bar of floor bar cage is stretched into preformed hole dock with the connecting reinforcement in preformed hole, water again and smash floorslab concrete and preformed hole slip casting tamped and the horizontal steel plate of angle steel is also anchored in concrete, water when smashing floor, the operation hole dug and be unearthed under reserving continuation equally on floor,

G, repetition step f, until the floor slab construction of the bottom of basement completes.

The method of prefabricated diaphragm wall of the present invention and construction outer wall of basement and floor compared with prior art, has the following advantages and effect:

First, agent structure i.e. each wall monomer of this diaphragm wall is prefabricated, only has the on-the-spot slip casting in coupling part, like this, drastically reduce the area on-the-spot grouting amount, therefore the stiff speed of concrete is fast, significantly accelerates speed of application, shortens construction period, secondly, from longitudinal direction, the concrete longitudinally tensioning of multiple wall monomer that same wall arranges by prestressed reinforcement and pile foundation, improve the horizontal shearing resistance of wall row and longitudinal Compressive Bearing Capacity, and prestressed reinforcement in prestress hole and cement paste define longitudinal prestressing concrete joint pin, but not nonprestressed reinforcement in prestress hole and cement paste define longitudinal non-prestressed concrete joint pin, prestressed concrete joint pin and non-prestressed concrete joint pin are further by multiple wall monomer and pile foundation reinforcement integrally wall row, its horizontal shearing resistance of further increase and longitudinal Compressive Bearing Capacity, this longitudinal direction just overcome between wall monomer with wall monomer is connected and longitudinal direction between diaphragm wall with pile foundation is connected the technical barrier that cannot realize, again, by the joint portion reinforcing cage in concrete joint portion, the transverse reinforcement docking arranged by the wall of the left and right sides is fixing, makes each wall row lateral connection diaphragm wall integrally, and, during construction floor, without the need to metope concrete being knocked out as prior art, but shrouding of dismantling, expose the connecting reinforcement in preformed hole and preformed hole, again connecting reinforcement is docked fixing with floor bar cage, water and smash floorslab concrete, floor slab construction process is convenient and swift, and the firm and reliable connection of floor and diaphragm wall, moreover, pre-embedded steel slab welds angle steel, and angle steel is anchored in floorslab concrete, like this, just strengthen the connection of floor and diaphragm wall, improve the shear strength of its link position.

Accompanying drawing explanation

Fig. 1 be prefabricated diaphragm wall of the present invention and floor face structural representation.

Fig. 2 be the wall monomer of prefabricated diaphragm wall of the present invention face structural representation.

Fig. 3 is the positive sectional structure schematic diagram of the wall row of prefabricated diaphragm wall of the present invention.

Fig. 4 is the positive sectional structure schematic diagram of amplification of prefabricated diaphragm wall of the present invention and floor junction.

Fig. 5 is the plan structure schematic diagram of prefabricated diaphragm wall of the present invention.

Shown in figure 1, wall monomer, 2, pile foundation, 3, prestress hole, 4, non-prestressed hole, 5, transverse reinforcement, 6, sleeve pipe, 7, prestressed reinforcement, 8, nonprestressed reinforcement, 9, concrete joint portion, 10, joint portion reinforcing cage, 11, level to groove, 12, preformed hole, 13, pre-embedded steel slab, 14, connecting reinforcement, 15, shrouding, 16, stake holes, 17, mounting groove, 18, floor, 19, operation hole, 20, angle steel, 21, horizontal steel bar.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the invention will be further described.

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, prefabricated diaphragm wall of the present invention, it comprises multiple wall monomer 1 and many piles base 2.Each wall monomer 1 longitudinally runs through multiple prestress hole 3 and multiple non-prestressed hole 4, the left and right side of the outer protruding wall monomer 1 of transverse reinforcement 5 of each wall monomer 1.Multiple wall monomer 1 is superposition formation one row wall row longitudinally, often row wall row whole wall monomers 1 prestress hole 3 in run through the prestressed reinforcement 7 having a band sleeve pipe 6, the lower end of prestressed reinforcement 7 and the lower end of sleeve pipe 6 are all anchored in pile foundation 2 concrete, whole wall monomer 1 that this row wall arranges by prestressed reinforcement 7 and pile foundation 2 tensioning and fill cement paste in prestress hole 3.Run through and have a nonprestressed reinforcement 8 and also fill cement paste in non-prestressed hole 4 in the non-prestressed hole 4 of every whole wall monomers 1 of row wall row.Be provided with concrete joint portion 9 between every two adjacent wall row, be provided with joint portion reinforcing cage 10 in concrete joint portion 9, the transverse reinforcement 5 stretching into concrete joint portion 9 that joint portion reinforcing cage 10 and the wall of the left and right sides arrange docks to be fixed.Specifically, the right flank being positioned at each wall monomer 1 of the wall row on the left of concrete joint portion 9 is protruding with transverse reinforcement 5, and this transverse reinforcement 5 docks fixing with joint portion reinforcing cage 10; The left surface being positioned at each wall monomer 1 of the wall row on the right side of concrete joint portion 9 is protruding with transverse reinforcement 5, and this transverse reinforcement 5 docks fixing with joint portion reinforcing cage 10.The inner surface of each wall monomer 1 is provided with a level to groove 11, and level is provided with the multiple preformed hole 12 of a row and one piece of pre-embedded steel slab 13 to groove 11 bottom land.Multiple preformed hole 12 is horizontally in a row, and pre-embedded steel slab 13 is positioned at the below of row's preformed hole 12.Be provided with in each preformed hole 12 and dock fixing connecting reinforcement 14 with wall monomer 1 reinforcing cage.Level is spirally connected one piece for blocking the shrouding 15 of pre-embedded steel slab 13 and preformed hole 12 in groove 11.Specifically, level is embedded with to the bottom land of groove 11 built-in fitting being with internal thread hole, and screw screws in the internal thread hole of built-in fitting through the through hole of shrouding 15.

The present invention constructs the method for outer wall of basement and floor, and namely utilize prefabricated diaphragm wall of the present invention to the method for construct outer wall of basement and floor, it comprises the following steps:

A, dig mounting groove 17 and bore multiple stake holes 16, stake holes 16 is positioned at the bottom land of mounting groove 17.

B, in each stake holes 16, insert the prestressed reinforcement 7 of pile foundation 2 reinforcing cage and a band sleeve pipe 6, and to stake holes 16 slip casting, like this, prestressed reinforcement 7 and sleeve pipe 6 are all anchored in pile foundation 2, and prestressed reinforcement 7 lower end forms anchored end.

C, multiple wall monomer 1 is longitudinally superimposed as multiple wall arrange and put into mounting groove 17, each wall arranges and is formed by stacking from the bottom up by multiple wall monomer 1, and the prestressed reinforcement 7 of anchoring in the pile foundation 2 of each wall row below and sleeve pipe 6 are arranged the prestress hole 3 of whole wall monomer 1 through this wall, nonprestressed reinforcement 8 is inserted in the non-prestressed hole 4 of the whole wall monomers 1 arranged to each wall again, then slip casting in the prestress hole 3 arranged to each wall and non-prestressed hole 4, after band concrete is stiff, tensioning prestressed reinforcement 7, like this, the wall monomer 1 of multiple longitudinally superposition defines overall wall row.

D, in the gap between every two adjacent walls row, insert joint portion reinforcing cage 10, and the transverse reinforcement 5 that the side of each wall monomer 1 of wall row is protruded docks fixing with joint portion reinforcing cage 10, then to slip casting in gap, make it to form the concrete joint portion 9 between wall row, like this, multiple wall row form overall diaphragm wall.

E, water floor 18 concrete smashing basement top layer diaphragm wall top mark is high, the vertical end face protruding this wall monomer 1 to reinforcing bar of the reinforcing cage of a wall monomer 1 of each wall row the top, when laying the floor 18 of basement top floor 18 namely with ground level, vertical to bar connecting by what the reinforcing cage of this floor plate 18 and wall row the top wall monomer 1 end face protruded, and set up template, water floor 18 concrete smashing top layer.The floor 18 of basement top layer leaves operation hole 19 in advance that dig and be unearthed, this operation hole 19 polishing again after basement structure construction completes.

F, multiple tracks diaphragm wall form the edge of foundation ditch, under the soil body dug in diaphragm wall form foundation ditch.Under dig the soil body in diaphragm wall until under dig the absolute altitude of lower one deck basement floor 18, lay down the shrouding 15 of the wall monomer 1 of this absolute altitude, the preformed hole 12 of wall monomer 1 inner surface and pre-embedded steel slab 13 are exposed, pre-embedded steel slab 13 welds angle steel 20, re-lay the reinforcing cage of this floor plate 18 and the horizontal steel bar 21 of floor 18 reinforcing cage is stretched into preformed hole 12 dock with the connecting reinforcement 14 in preformed hole 12, water again and smash floor 18 concrete and preformed hole 12 slip casting tamped and the horizontal steel plate of angle steel 20 is also anchored in concrete, water when smashing floor 18, the operation hole 19 dug and be unearthed under reserving continuation equally on floor 18.

G, repeating step f, until the floor 18 of the bottom of basement has been constructed, watering when smashing bottom floor 18, without the need to giving over to industry hole 19.

Claims (2)

1. a prefabricated diaphragm wall, it is characterized in that: it comprises multiple wall monomer (1) and many piles base (2), each wall monomer (1) is longitudinally run through multiple prestress hole (3) and multiple non-prestressed hole (4), the left and right side of the outer protruding wall monomer (1) of transverse reinforcement (5) of each wall monomer (1), multiple wall monomer (1) is superposition formation one row wall row longitudinally, often row wall row whole wall monomers (1) prestress hole (3) in run through the prestressed reinforcement (7) having a band sleeve pipe (6), the lower end of prestressed reinforcement (7) and the lower end of sleeve pipe (6) are all anchored in pile foundation (2) concrete, whole wall monomer (1) that this row wall arranges by prestressed reinforcement (7) and pile foundation (2) tensioning and fill cement paste in prestress hole (3), run through and have a nonprestressed reinforcement (8) and also fill cement paste in non-prestressed hole (4) in the non-prestressed hole (4) of every whole wall monomers (1) of row wall row, concrete joint portion (9) is provided with between every two adjacent wall row, be provided with joint portion reinforcing cage (10) in concrete joint portion (9), the transverse reinforcement (5) stretching into concrete joint portion (9) that joint portion reinforcing cage (10) and the wall of the left and right sides arrange docks fixing, the inner surface of each wall monomer (1) is provided with a level to groove (11), level is provided with the multiple preformed hole of a row (12) and one piece of pre-embedded steel slab (13) to groove (11) bottom land, pre-embedded steel slab (13) is positioned at the below of row's preformed hole (12), be provided with in each preformed hole (12) and dock fixing connecting reinforcement (14) with wall monomer (1) reinforcing cage, level is spirally connected one piece for blocking the shrouding (15) of pre-embedded steel slab (13) and preformed hole (12) in groove (11).
2. to construct the method for outer wall of basement and floor, it is characterized in that: it comprises the following steps:
A, dig mounting groove (17) and bore multiple stake holes (16), stake holes (16) is positioned at the bottom land of mounting groove (17);
B, in each stake holes (16), insert the prestressed reinforcement (7) of pile foundation (2) reinforcing cage and a band sleeve pipe (6), and to stake holes (16) slip casting;
C, multiple wall monomer (1) is longitudinally superimposed as multiple wall arrange and put into mounting groove (17), each wall arranges and is formed by stacking from the bottom up by multiple wall monomer (1), and the prestressed reinforcement (7) of anchoring in the pile foundation (2) of each wall row below and sleeve pipe (6) are arranged the prestress hole (3) of whole wall monomer (1) through this wall, nonprestressed reinforcement (8) is inserted in the non-prestressed hole (4) of the whole wall monomers (1) arranged to each wall again, then the prestress hole (3) arranged to each wall and non-prestressed hole (4) interior slip casting, after band concrete is stiff, tensioning prestressed reinforcement (7), like this, the wall monomer (1) of multiple longitudinally superposition defines overall wall row,
D, in the gap between every two adjacent walls row, insert joint portion reinforcing cage (10), and the transverse reinforcement (5) that the side of each wall monomer (1) of wall row is protruded docks fixing with joint portion reinforcing cage (10), then to slip casting in gap, make it to form the concrete joint portion (9) between wall row, like this, multiple wall row form overall diaphragm wall;
E, water floor (18) concrete smashing basement top layer diaphragm wall top mark is high, and on the floor (18) of basement top layer, leave the operation hole (19) dug and be unearthed in advance;
F, under dig the soil body in diaphragm wall until under dig the absolute altitude of lower one deck basement floor (18), lay down the shrouding (15) of the wall monomer (1) of this absolute altitude, the preformed hole (12) of wall monomer (1) inner surface and pre-embedded steel slab (13) are exposed, pre-embedded steel slab (13) welds angle steel (20), re-lay the reinforcing cage of this floor plate (18) and the horizontal steel bar (21) of floor (18) reinforcing cage is stretched into preformed hole (12) dock with the connecting reinforcement (14) in preformed hole (12), water again and smash floor (18) concrete and preformed hole (12) slip casting tamped and the horizontal steel plate of angle steel (20) is also anchored in concrete, water when smashing floor (18), the operation hole (19) dug and be unearthed under reserving continuation equally on floor (18),
G, repetition step f, until the floor of the bottom of basement (18) has been constructed.
CN201410238500.9A 2014-05-30 2014-05-30 The method of prefabricated diaphragm wall and construction outer wall of basement and floor CN104018518B (en)

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CN104988904B (en) * 2015-07-10 2017-04-12 浙江大学宁波理工学院 Prestress frame continuous wall and construction method thereof
CN105040677B (en) * 2015-08-12 2016-11-02 济南轨道交通集团有限公司 Foundation ditch prefabricated pile and the method for attachment of cast-in-place overlapping inwall stirrup
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