CN2861284Y

CN2861284Y - Structure frame beam and gang-piles round protection connection node in inverse engineering

Info

Publication number: CN2861284Y
Application number: CN 200520048188
Authority: CN
Inventors: 赵琪; 周恩度; 曾虹程; 戚长根
Original assignee: Shanghai No2 Building Co Ltd
Current assignee: Shanghai No2 Building Co Ltd
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2007-01-24
Anticipated expiration: 2015-12-29

Abstract

The utility model designs a connection joint between the structural frame girder and the piling enclosure in the reverse engineering, which comprises a first embedded part, a second embedded part and a supporting part. The first embedded part and the second embedded part are respectively in fixed connection with both ends of the supporting part. The first embedded part 1 is buried at the side of the enclosure purlin during construction, and the second embedded part is buried at the side of the structural edge beam. From the disclosed technique scheme, the joints of the utility model is skillful in conception, simple in structure, and suitable for application in the reverse engineering using piling enclosure, which has great practical value. Under the premise that structure girder is not effect the consequent operation of newly constructed external wall in the basement, the utility model can be completely realized that the frame girder is served as a horizontal supporting component during the reverse excavating the foundation pit, and served as the transformation of using function of permanent structural components during the normal application process.

Description

Contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node

Technical field

The utility model relates to the connected node structure that a kind of structural frames is set a roof beam in place and gone along with sb. to guard him with campshed, relates in particular to contraryly to do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node.

Background technology

In the contrary working method engineering of routine, the bracing of foundation pit system often adopts diaphragm wall as going along with sb. to guard him barricade, simultaneously, also the form that often adopts " unification of two walls " is to bring into play the effect of diaphragm wall to greatest extent, that is: diaphragm wall is the outer wall of basement that barricade is again the normal operational phase of structure of going along with sb. to guard him in excavation of foundation pit stage.Adopt the contrary working method engineering of this kind " unification of two walls " form, its level to beam slab and diaphragm wall between only need to adopt and in the ground wall, reserve the beam slab joint bar and can realize that for the follow-up regular node that uses of plugging into beam slab is connected with the intact of ground wall, and can realize preferably that beam, plate are in stage of going along with sb. to guard him and the normally function switching of operational phase.

Yet; continually developing and develop along with the underground space in recent years; various types of base pit engineerings just more and more emerge; the engineering that is in the area, down town is greatly wherein arranged, and is not very dark though its foundation ditch digs deeply, in order to pursue the peak use rate in place; the foundation ditch of such engineering is often complex-shaped; area is huge, also often is close to other important buildings or subway, municipal pipeline etc., and the protection to surrounding enviroment in the construction requires high.In such cases; for guaranteeing the safety of foundation ditch itself and surrounding enviroment; often consider to adopt safer relatively contrary sequence method to construct; simultaneously; in order to reduce construction investment; design can be abandoned expensive diaphragm wall and then be selected more economic campshed after take all factors into consideration foundation ditch and digging factor such as dark again in the design of going along with sb. to guard him system.After adopting campshed, because campshed only is to go along with sb. to guard him system temporarily, outer wall of basement needs can carry out brand-new suitable the construction after contrary work finishes, therefore, as undertaking the normal configuration member simultaneously and going along with sb. to guard him the supporting member two big structural frames that act on and set a roof beam in place, between itself and the campshed as the node that reinforced concrete beam directly supported on the fender body after plugging into of the joint bar that continues to follow conventional lines handle, it will exist more drawback or deficiency in practical operation, as: one, the Vierendeel girder spacing, this axle net according to structure design such as cross section is determined, but as it directly is supported to goes along with sb. to guard him campshed and undertake the effect of going along with sb. to guard him support, its every index will be calculated again according to going along with sb. to guard him needs again, will bring huge beam section thus, work such as interim beam are adjusted and increased newly to arrangement of reinforcement; Two, adverse construction method finishes to turn to outer wall of basement along after doing, and the node between Vierendeel girder and the outer wall of basement all is difficult at aspects such as power transmission, sealings handle or guarantee; Even if three make outer wall of basement be able to moulding by numerous and diverse processing, but in order to ensure basement permanent structure system and go along with sb. to guard him disconnection fully between the system temporarily, still need and handle making complicated repetition support replacement with the direct-connected Vierendeel girder of campshed, the support replacement of this kind form may make the risk of foundation ditch safety significantly increase.Comprehensive above unfavorable factor, conventional with go along with sb. to guard him the node structure that direct employing rc-frame-beam is connected and will be difficult to go along with sb. to guard him middle use at campshed, the job site is called a kind of novel, can satisfy the novel joint of contrary work, suitable work and the normal variant requirement of operational phase simultaneously.

Summary of the invention

The technical problem that the utility model solves promptly is to provide a kind of and contraryly does in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him novel connected node, to overcome the deficiency that prior art exists, provide a kind of brand-new, shaped steel between Vierendeel girder that can extensively use in reverse construction and campshed are gone along with sb. to guard him-concrete connected node satisfies the needs of the parties concerned.

The said node of the utility model comprises first built-in fitting, second built-in fitting and support member, and first built-in fitting is fixedlyed connected with the two ends of support member respectively with second built-in fitting.

During construction, first built-in fitting 1 is embedded in goes along with sb. to guard him the purlin side, and second built-in fitting is embedded in the side of structure side bar.

Use this node, can make Vierendeel girder, play the effect that bracing of foundation pit supports reliably being connected against doing simple and clear the setting up of stage energy with campshed; By this node foundation ditch is not being repeated under the prerequisite of numerous and diverse support replacement work along the stage of doing, realize smooth suitable construction of exterior wall, and can guarantee the construction quality of Vierendeel girder and exterior wall junction:

1, in the contrary stage of doing the earthwork of each layer of excavation, select proper supporting part 3 for use, make as level to the permanent Vierendeel girder of support system and go along with sb. to guard him between the campshed and connect temporarily, and reach the purpose of the significant horizontal support force that the system of going along with sb. to guard him in the reliable delivery excavation of foundation pit produces.

2, finish at adverse construction method, big base plate finishes and builds, outer wall of basement turned to along the construction stage of doing, and only needed to mend steel plate for sealing water and open the needs that measure such as reinforcing bar hole can be satisfied the outer wall of basement construction by a spot of temporary concrete plate, back of cutting.

3, in the side bar place beam slab of constructing synchronously with outer wall of basement is filled a vacancy, can directly form permanent structural frames and set a roof beam in place 3 external wrapping concretes of the support member in the node, economical, realize that it is by going along with sb. to guard him the function conversion of supporting member to the permanent structure member easily.

4, after basement gradation backfill is finished, can corresponding gradation cut off processing to the support member 3 of leaving between exterior wall and the campshed, support replacement of easy, safe realization foundation ditch finishes.

By above-mentioned disclosed technical scheme as seen, node of the present utility model is skillfully constructed, and is simple in structure, is convenient to go along with sb. to guard him middle use at campshed, has bigger practical value.By this node, can make structural beams do not influence basement newly do exterior wall along the prerequisite of doing under, satisfactory implementation framework beam is done the excavation stage as horizontal support elements in that foundation ditch is contrary, normal operational phase its again as the conversion of the function of use of permanent structure member.

Description of drawings

Fig. 1 is the structural representation of contact of the present utility model.

Fig. 2 is that A-A among Fig. 1 is to schematic diagram.

The specific embodiment

Referring to Fig. 1 and Fig. 2, the said node of the utility model, comprise first built-in fitting 1, second built-in fitting 2 and support member 3, first built-in fitting 1 is fixedlyed connected with the two ends of support member 3 respectively with second built-in fitting 2, and first built-in fitting 1 and second built-in fitting 2 preferably adopt with the two ends of support member 3 respectively and be welded to connect.

During construction, first built-in fitting 1 is embedded in goes along with sb. to guard him purlin 4 sides, and second built-in fitting 2 is embedded in the side of structure side bar 5.

Further, said support member 3 can adopt the shaped steel or the Two bors d's oeuveres channel-section steel of I shape, preferred I shape shaped steel

Further, in order to increase the rigidity of support member 3, can above support member 3, build the interim plate 6 of steel concrete where necessary;

Further, for of the anchor connection of the interim plate 6 of reinforcing steel bar concrete, can on the joint face of support member 3 and the interim plate 6 of steel concrete, establish peg 7, said peg 7 preferred steel nails with support member 3.

Claims

1. contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node for one kind, it is characterized in that, comprise first built-in fitting (1), second built-in fitting (2) and support member (3), first built-in fitting (1) is fixedlyed connected with the two ends of support member (3) respectively with second built-in fitting (2).

2. according to claim 1ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that first built-in fitting (1) is embedded in goes along with sb. to guard him purlin (4) side, second built-in fitting (2) is embedded in the side of structure side bar (5).

3. according to claim 1 and 2ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that said support member (3) adopts the shaped steel of I shape.

4. according to claim 1 and 2ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that said support member (3) adopts the Two bors d's oeuveres channel-section steel.

5. according to claim 3ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that, be provided with the interim plate of steel concrete (6) in support member (3) top.

6. according to claim 4ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that, be provided with the interim plate of steel concrete (6) in support member (3) top.

7. according to claim 5ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that, on the joint face of support member (3) and the interim plate of steel concrete (6), be provided with peg (7).

8. according to claim 6ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that, on the joint face of support member (3) and the interim plate of steel concrete (6), be provided with peg (7).

9. according to claim 1ly contrary do in the engineering that structural frames is set a roof beam in place and campshed is gone along with sb. to guard him connected node, it is characterized in that first built-in fitting (1) and second built-in fitting (2) are fixedlyed connected with the two ends employing electric welding of support member (3) respectively.