Field Experiment Research of the Polycystic Aeration Bolt: Model Design and Anchorage Mechanism

Abstract

As a new type of bolt, the polycystic aeration bolt has a broad application prospect in soft soil area; however, its design and production are still in the stage of constant exploration and improvement. From the perspective of bolt material and engineering cost, the important components of the polycystic aeration bolt were analyzed by combination with the existing bolt models, and a new structural design scheme of a kind of polycystic aeration bolt which can be used in practical engineering was presented in this paper. Then, the stress and failure mode of this bolt were discussed, and the theoretical equation of the bearing capacity was derived by using the elastic-plastic theory. In addition, the assembly and fabrication technology of this bolt in practical foundation pit engineering was described in detail. Finally, the field pull-out test of the polycystic aeration bolt was carried out, and the test results were compared with those of the conventional grouting bolt, which indicated that this new bolt has a greater advantage in bearing capacity than the conventional grouting bolt, verifying the feasibility of the structural design scheme of the polycystic aeration bolt proposed in this paper.

A Study of the Morphological Design of Architecture from a Geometric Logic Perspective

“…e main research directions are the application of topology in contemporary architectural form and space creation; research on architectural geometric logic control based on engineering practice; research on the generation and construction of complex architectural forms based on advanced geometry; and complex architectural form control based on geometric logic. is part of the research is mainly based on the use of geometric control system method, the control and optimization method of architectural form is discussed, and the research is based on engineering practice and project practice, and has high research value [5]. In the research of parametric design digital construction based on geometric logic thinking, on the one hand, it is aimed at parametric technology or digital construction technology, and the geometric logic construction method of architectural form, such as the geometric logic construction method of architectural form based on parametric technology and research on geometric construction strategy of contemporary digital architecture [6].…”

The Influences of Bladder Properties on the Working Performance of the Multibladder‐Type Inflatable Anchor

“…e anchoring efficiency of the other is mainly achieved via the bonding force generated from the interaction of the anchor body, surrounding rock, and cementing material, such as cement mortar anchor and resin anchor. In addition, the new types of anchor, such as inflatable anchor [32][33][34][35], yielding anchor [36,37], and hot melting-retrievable anchor [38], also promote extensive research studies on the engineering design and the anchorage force transmission mode, wherein the multibladder-type inflatable anchor [39][40][41][42] is a kind of special anchor derived from the inflatable anchor, which not only inherits the high bearing capacity of the inflatable bolt but also can enhance the controllability by adjusting the bladder parameters, indicating obvious superiorities in the application of underground engineering in the offshore region where the soft soil layer is widely encountered.…”