Experience in Preserving Adjacent Buildings During Excavation of Large Foundation Pits Under Conditions of Dense Development

Mangushev, R. A.; Osokin, A. I.; Garnyk, L. V.

doi:10.1007/s11204-016-9401-9

Cited by 23 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the case where there is an overload on the pit edge, Shi et al [6] monitored the building next to the excavation pit and found that the maximum settlement value of the building appeared at its corner, and there is a tendency for the horizontal direction to move toward the pit. Mangushev et al [7] studied the settlement of the building next to the pit and found that the cause of additional settlement in building foundations during the excavation of a deep pit next to them was the loss of structure in thixotropic water-saturated bed soil and their transition to a fluid-plastic state. In another work, Wang et al [8] studied the whole process of pit excavation and found the effect of dewatering water from the foundation pit was greater than that of the excavation on the building when the brick-concrete building structure was 34 m away from the foundation pit.…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior of Deep Foundation Pit under Both Overloading and Unloading Conditions

Wei

Zhou

Yin-Feng

et al. 2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

A deep foundation pit in a station of the Hangzhou subway is adjacent to new high-rise residential buildings on the north side and to the Evergrande foundation pit being excavated on the south side. This work considers the excavation of the foundation pit in the subway station as the research subject, focuses on the difference of the deformation and Earth pressure between the north side and the south side of the foundation pit under these special working conditions through the analysis of the measured data, and compares it with an ordinary foundation pit. Analyzing the measured data reveals that the horizontal displacement of the retaining wall and the ground settlement are far larger on the north side than on the south side, and both often exceed the deformation alarm value; the deformation of the ordinary foundation pit is between the deformation of the overloaded (north) side and that of the unloaded (south) side of the foundation pit. Moreover, the maximum rate of the horizontal creep of the soil and the maximum rate of the creep caused by the ground settlement on the north side of the foundation pit are larger than those on the south side of the foundation pit; the maximum rate of the horizontal creep of the ordinary foundation pit is between the two. The active Earth pressure on the pit wall on the north side is higher than that on the south side of the foundation pit, and because of the surrounding unloading, passive Earth pressure is generated at the bottom of the pit wall on the south side of the foundation pit, which causes it to shift to the outside of the foundation pit. The settlement of the surrounding high-rise buildings and the settlement of the columns are all within the range of the alarm values; also, the buildings settle evenly. Due to the excavation and unloading on the south side of the foundation pit, the uplift of the columns is not considerable.

show abstract

Section: Introductionmentioning

confidence: 99%

Deformation Behavior of Deep Foundation Pit under Both Overloading and Unloading Conditions

Wei

Zhou

Yin-Feng

et al. 2020

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…At the same time, their conditional viscosity was in the range of 36-37 s. This is not much higher than the water conditional viscosity that is equal to 32 s. Such suspensions have a good penetrating ability and allow obtaining soil-concrete when injected into sandy soil. Consolidation of soils has different purposes: consolidation of unstable soils, construction of ground water cutoffs and increase of bearing capacity of the soil for the foundation bases [44][45][46][47][48][49][50]. The bases under the foundations should have increased compressive strength.…”

Section: Research Results and Discussionmentioning

confidence: 99%

Micro-Cement for Injection Consolidation of Base Soils

Smirnova*,

Glazev,

Komolov

et al. 2019

IJITEE

View full text Add to dashboard Cite

Issues of development of compositions of injectable materials on inorganic basis for underground and transport construction are considered in the paper. Inorganic binders for aqueous suspensions for strengthening of low-strength sandy and debris soils by injection into the fortified massif are proposed. The use of silica gel in combination with hydrated lime for injectable aqueous suspensions is justified. The influence of superplasticizer on the technological properties of suspensions is shown. The properties of micro-cement of different compositions are presented. Optimal ratios of components were determined. The following properties of aqueous suspensions have been studied: viscosity, sedimentation and penetrating power. The viscosity was up to 40 s, sedimentation up to 1.4%. Soil-concrete obtained by injecting the aqueous suspension based on composite binders has the compressive strength in the range of 3.3-6.2MPa.

show abstract

“…The second, more difficult task is that a 4-storey underground extension to the existing building, designed in a pit with a depth of about 20 m, will be located in the immediate vicinity (at a distance of 0.5 m) from the foundation of the end wall of the building along the «1» axis. In this regard, there are questions of preserving the stability of the foundations and the building of the Shamovskaya Hospital itself both during construction and reconstruction, and during its further operation [1][2][3][4].…”

Section: Methodsmentioning

confidence: 99%

Ensuring the stability of the deep pit enclosure and foundation bases in the conditions of reconstruction of the architectural monument in the city of Kazan

2021

View full text Add to dashboard Cite

Technical solutions for the reconstruction of the building of the Shamovskaya Hospital, an architectural monument built in 1907-1910, are highlighted in Kazan. The reconstruction involves the construction of a 4- storey underground extension to the building. The implementation of the developed architectural solutions revealed a number of problems associated with ensuring the stability of the foundation when developing a deep pit in the immediate (0.5 m) proximity to the building. The authors propose technical solutions to strengthen the foundations of the existing building of the Shamovskaya Hospital, as well as the structure of the retaining wall.

show abstract

Experience in Preserving Adjacent Buildings During Excavation of Large Foundation Pits Under Conditions of Dense Development

Cited by 23 publications

References 0 publications

Deformation Behavior of Deep Foundation Pit under Both Overloading and Unloading Conditions

Deformation Behavior of Deep Foundation Pit under Both Overloading and Unloading Conditions

Micro-Cement for Injection Consolidation of Base Soils

Ensuring the stability of the deep pit enclosure and foundation bases in the conditions of reconstruction of the architectural monument in the city of Kazan

Contact Info

Product

Resources

About