CN103233477A

CN103233477A - Method for pouring open type reinforced concrete support and baseboard floor in deep foundation pit supporting engineering

Info

Publication number: CN103233477A
Application number: CN2013101453907A
Authority: CN
Inventors: 刘羽
Original assignee: WENZHOU NATURAL ENGINEERING PROSPECTING Co Ltd
Current assignee: WENZHOU NATURAL ENGINEERING PROSPECTING Co Ltd
Priority date: 2013-04-25
Filing date: 2013-04-25
Publication date: 2013-08-07

Abstract

The invention discloses a method for pouring an opening type reinforced concrete support and a basement floor in deep foundation pit supporting engineering. The method includes: 1, arranging an open type concrete support on the adjacent portion of a deep underground second-layer basement and a shallow underground first-layer basement in the deep foundation pit supporting engineering with large high-low difference; and 2, pouring the open type concrete support, the underground first-layer basement floor and the shallow basement foundation together. By means of the pouring method, the opening type support, the shallow underground basement foundation and the floor need to be poured simultaneously, and transition is performed through force transmission of a beam, so that the intact integrity of the support and the foundation can be achieved, supporting force with strong rigidity is supplied to a pile wall type protection body, the stress condition of an exterior protection structure is improved, and the integral balancing performance can be improved.

Description

The pouring procedure of the support of open type steel concrete and basement bottom board in the Extra-Deep Foundation Pit engineering

Technical field

The present invention relates to a kind of in the Extra-Deep Foundation Pit engineering with big difference of height open type steel concrete support pouring procedure with basement bottom board.

Background technology

Go along with sb. to guard him in the engineering at deep foundation pit of construction, the system of going along with sb. to guard him that piling wall formula space enclosing structure adds the cast-in-situ steel reinforced concrete support has obtained using widely, because this fender body cording has bigger rigidity, in Excavation Process, land movement outside the control hole had effect preferably.In the Extra-Deep Foundation Pit engineering with big difference of height, for increasing the safety of foundation pit side-wall, to adopt the way that increases by one steel concrete support than the position, deep more; But this part concrete supports not sealing, fails to provide globality and rigidity preferably, and this part concrete supports and not one cast of base plate, is unfavorable for integrally-built balance.

Summary of the invention

Technical problem to be solved by this invention provides open type steel concrete in the Extra-Deep Foundation Pit engineering that a kind of rigidity, globality and balance that can make the system of going along with sb. to guard him be highly improved and supports pouring procedure with basement bottom board.

For this reason, the pouring procedure of the support of open type steel concrete and basement bottom board in the Extra-Deep Foundation Pit engineering provided by the invention, comprise 1, in the Extra-Deep Foundation Pit engineering with big difference of height, at darker negative two layers of basement and more shallow negative one deck basement adjoiner the open type concrete be set and support, 2, described open type concrete supports with the negative one deck base plate of basement and superficial part basement basis and be cast in by lintel.

In the pouring procedure provided by the invention, build simultaneously because requiring open type to support with superficial part basement basis, base plate, and the power transmission transition by lintel, realized supporting and basic intact globality, piling wall formula fender body is provided the support force of powerful rigidity, improved the force-bearing situation of space enclosing structure, the whole machine balancing performance is got a promotion.

Description of drawings

The supporting plan view that Fig. 1 embodiment of the invention 1 provides.

Fig. 2 is a connection detail among Fig. 1.

Fig. 3 is the II-II cross-sectional schematic among Fig. 2.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 3, the pouring procedure of the support of open type steel concrete and basement bottom board in the Extra-Deep Foundation Pit engineering provided by the invention, comprise 1, at darker negative two layers of basement and more shallow negative one deck basement adjoiner the open type concrete finger two ends that to support the so-called open type of 1(be building self being set in the Extra-Deep Foundation Pit engineering with big difference of height to dock mutually), the open type concrete supports 1 and comprises the beam that distributes along negative one deck basement and negative two layers of basement adjoiner and the concrete bearing post that is used for brace summer, 2, described open type concrete support 1 is cast in by lintel 3 with the negative one deck base plate 2 of basement and superficial part basement basis, it is the not butt joint mutually of finger two ends of building self that open type collar tie beam 4(what is called open type is set around darker negative two layers of basement), collar tie beam 4 is cast in the lintel 3 local positions that intersect, negative one deck base plate 2 main reinforcements anchor in the lintel, and collar tie beam 4 anchors in the lintel 3 with the reinforcing bar of lintel 3 junctions.In the present embodiment, lintel 3 can be finished on basement basis, deep and build the back dismounting, also can keep lintel.

As Fig. 1, Fig. 2, shown in Figure 3, embodiment 1 certain downtown enterprise settles office building engineering, basement building area 7011m ², mostly be one deck basement, cutting depth 5.20m; The basement northwest corner is underground two layers, this part building area 1050m ², cutting depth 9.20m is with B1 cutting depth discrepancy in elevation 4.00m.Foundation ditch adopts bored pile to add one steel concrete braced cuts system and goes along with sb. to guard him, to two layers of basement part, adopt the strengthening measure that increases by one open type concrete support 1, the support 1 of open type concrete is cast in by lintel 3 with the negative one deck base plate 2 of basement and superficial part basement basis, around darker negative two layers of basement, open type collar tie beam 4 is set, collar tie beam 4 is cast in the lintel 3 local positions that intersect, negative one deck base plate 2 main reinforcements anchor in the lintel, and collar tie beam 4 anchors in the lintel 3 with the reinforcing bar of lintel 3 junctions.

Claims

1. open type steel concrete supports pouring procedure with basement bottom board in the Extra-Deep Foundation Pit engineering, it is characterized in that: comprise 1, in the Extra-Deep Foundation Pit engineering with big difference of height, at darker negative two layers of basement and more shallow negative one deck basement adjoiner the open type concrete be set and support, 2, described open type concrete supports with the negative one deck base plate of basement and superficial part basement basis and be cast in by lintel.

2. the pouring procedure of the support of open type steel concrete and basement bottom board in the Extra-Deep Foundation Pit engineering according to claim 1 is characterized in that: bear one deck base plate main reinforcement and anchor in the lintel.

3. according to the pouring procedure of open type steel concrete support in right 1 or the 2 described Extra-Deep Foundation Pit engineerings with basement bottom board, it is characterized in that: around darker negative two layers of basement the open type collar tie beam is set, collar tie beam is cast in the local position that intersects of lintel.

4. open type steel concrete supports pouring procedure with basement bottom board in the Extra-Deep Foundation Pit engineering according to claim 1 and 2, and it is characterized in that: the reinforcing bar of collar tie beam and lintel junction anchors in the lintel.

5. according to the pouring procedure of open type steel concrete support in right 1 or the 2 described Extra-Deep Foundation Pit engineerings with basement bottom board, it is characterized in that: the reinforcing bar of collar tie beam and lintel junction anchors in the lintel.

6. open type steel concrete supports pouring procedure with basement bottom board in the Extra-Deep Foundation Pit engineering according to claim 1 and 2, it is characterized in that: described open type concrete supports and comprises the beam that distributes along negative one deck basement and negative two layers of basement adjoiner and the concrete bearing post that is used for brace summer.

7. open type steel concrete supports pouring procedure with basement bottom board in the Extra-Deep Foundation Pit engineering according to claim 3, it is characterized in that: described open type concrete supports and comprises the beam that distributes along negative one deck basement and negative one deck basement adjoiner and the concrete bearing post that is used for brace summer.

8. the pouring procedure of the support of open type steel concrete and basement bottom board in the Extra-Deep Foundation Pit engineering according to claim 1 and 2 is characterized in that: remove after described lintel is finished on basement basis, deep and built.

9. the pouring procedure of the support of open type steel concrete and basement bottom board in the Extra-Deep Foundation Pit engineering according to claim 3 is characterized in that: remove after described lintel is finished on basement basis, deep and built.

10. the pouring procedure of the support of open type steel concrete and basement bottom board in the Extra-Deep Foundation Pit engineering according to claim 4 is characterized in that: remove after described lintel is finished on basement basis, deep and built.