Method for supporting and replacing bed plate foundation

A slab foundation and foundation technology, applied in foundation structure engineering, foundation structure repair, building maintenance, etc., can solve problems such as underpinning piles that cannot be separated from construction, and achieve the effects of low cost, project cost saving, and cost saving

Inactive Publication Date: 2006-12-06
ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING SHANDONG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the foundation underpinning method provided by this patent is still inseparable from construction underpinning piles

Method used

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  • Method for supporting and replacing bed plate foundation
  • Method for supporting and replacing bed plate foundation
  • Method for supporting and replacing bed plate foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take a four-story frame structure building as an example: the column spacing is 7.5m, and the reinforced concrete independent foundation under the columns is to be transformed into a structure with a basement.

[0028] By the slab foundation underpinning method of the present invention, utilize promptly have building to do the one-story floor plate (at indoor floor place) of basement roof as underpinning member. During the construction process, the basement roof is constructed according to the plum blossom layout, see figure 1 ; The basement floor is also constructed according to the plum blossom layout, see figure 2 . in figure 1 and figure 2 The top slab or bottom slab marked as part B is the slab for normal use, and the top slab or bottom slab marked as part A doubles as the underpinning plate. The construction sequence is as follows:

[0029] 1. At the location of the proposed basement roof, press figure 2 Layout and design require the construction of all pr...

Embodiment 2

[0038] The difference between this embodiment and embodiment 1 is to adopt such as image 3 Construction of the cross-shaped roof arrangement shown. It is first to complete the construction of all the roof and primary and secondary beams, and the roof must also be reliably connected through the beams and columns, and the roof also plays the role of "underpinning components". Excavation under the roof image 3 The earthwork in the shaded part shown in , up to the design level of the basement floor. During the excavation process, according to the soil condition, the horizontal bracing support is carried out to ensure the stability of the soil. After the column is extended downward, the beam and the base plate of the shaded part can be constructed. After this part of the slab reaches the design strength, it can be used as a temporary foundation to support the upper load. After the remaining part of the earthwork is excavated, the middle part of the bottom plate can be filled ...

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Abstract

A method for underpinning plate foundation includes constructing partial top plate of basement first to utilize soil body under said plate to support load of existed building, simultaneously carrying out earth work on the other parts, constructing column or wall and base plate at those region after earth work there is finished, utilizing constructed column or wall and base plate to support top load in order to finish earth work and construction work of top plate and base plate at the rest regions.

Description

technical field [0001] The invention relates to an underground underpinning method for buildings in civil engineering. Background technique [0002] Foundation underpinning plays an important role in the development of underground space. In the 1960s, the underground underpinning technique was applied to the development of the underground space of buildings, generally using underpinning beams and underpinning piles as underpinning components. As a temporary support during construction, pile foundations must be constructed under the building, and the load of the underpinning beam must be transmitted to the pile foundation (ie underpinning piles) to ensure the safety of the building. The method is reliable and the settlement is small, and it can not only be applied to the development of underground space, but also can be used for foundation reinforcement and deviation correction. [0003] Buildings transfer loads to the foundation through the foundation. The material streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02E02D37/00E02D29/045
Inventor 贾强张鑫
Owner ENGINEERING RESEARCH INSTITUTE OF APPRAISAL AND STRENGTHENING SHANDONG JIANZHU UNIVERSITY
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